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Josele
Joined: 10 Apr 2012
Posts: 407
Location: Tarifa, Spain
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Posted: Oct 09, 2014 16:06 Post subject: Re: Collection of Fiebre Verde |
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Josele wrote: | Nice start, a good piece, proper photo, detailed comments, let's go!
Thanks for sharing. |
From the beginning I sensed this could be a very interesting thread, but it is even exceeding my expectations. Should not be easy to gather a collection like this. Maybe some day Gérard will explain the story to us...
Thanks again for this appetizing green salad. Long life for Green Fever!
_________________ Josele |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 10, 2014 03:23 Post subject: Re: Collection of Fiebre Verde |
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Josele
When all this started in the late 90's I had no idea where the Colombian "Camino Verde" would take me to.
15 years later, now that my eyes are trained to pick up the specific Colombian wavelengths of green light, I am still unsure where I stand.
(For sure it does not help to choose the right lettuce as my significant other keeps saying...)
On a strict accounting level my collection is growing and so are the number of localities my specimens come from. I was lucky enough to be in the right place at the right time.
But I have no doubt there are still many surprises waiting ahead and following the green path has never been more exciting!
Many thanks again for showing interest.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 10, 2014 12:12 Post subject: Re: Collection of Fiebre Verde - Coscuez |
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White and grey calcite are commonly associated in Coscuez.
Also quartz can be found - this specimen has a couple of small translucent quartz crystals, one of them stands right over one of the emerald crystal faces.
Emerald is 29mm long.
Wanted to enjoy the sun today so some of the photos were taken under daylight.
Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 75x60x40mm |
Description: |
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33150 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 75x60x40mm |
Description: |
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33127 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 75x60x40mm |
Description: |
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33124 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=6cm |
Description: |
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33107 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=3cm |
Description: |
Note the crystallization patterns on one of the emerald crystal faces. |
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33170 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4cm |
Description: |
Crystallization patterns are fairly common in Colombian emeralds. |
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33139 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=6cm |
Description: |
Note the 2 translucent quartz crystals on the left end of the emerald. More quartz crystals in the left bottom corner. |
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33125 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=3.5cm |
Description: |
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33083 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=7cm |
Description: |
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33129 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 10, 2014 16:21 Post subject: Re: Collection of Fiebre Verde - Muzo |
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This is a typical Muzo specimen where the black shale matrix is covered by 2 distinct layers of crystals
1) A very thin layer of crystallized white albite
2) Lying over the layer of albite, a 1/2 cm thick layer of various crystallized minerals - emeralds, grey calcite and pyrite.
The emerald crystals lying on the matrix are the ones that survived from either a dynamite blast in the mine or from cutting (Or both as all the standing emerald crystals are gone).
Longest emerald is 17mm long.
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 125x70x40cm |
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33018 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 125x70x40cm |
Description: |
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33004 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=6cm |
Description: |
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33013 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=5cm |
Description: |
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33011 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4cm |
Description: |
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33104 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4cm |
Description: |
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33063 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Albite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=5cm |
Description: |
Note the contrast between the 2 layers. Also note the sparkling pyrite within the black shale matrix, on the right-hand side. |
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33034 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 11, 2014 16:22 Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas |
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Black shale matrix with iron oxide stains..
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x60x65mm |
Description: |
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32906 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - xl length=14mm |
Description: |
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32921 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - xl length=14mm |
Description: |
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32969 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - xl length=14mm |
Description: |
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32914 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - xl length=14mm |
Description: |
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32930 Time(s) |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Oct 11, 2014 19:19 Post subject: Re: Collection of Fiebre Verde |
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Thank you for sharing your collection with us, very nice photography and a remarkable selection of emerald specimens.
_________________ Joseph D'Oliveira
Hanmer, Ontario
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 12, 2014 02:02 Post subject: Re: Collection of Fiebre Verde |
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Thank you for your comments Joseph!
Being almost a single-mineral/single-variety collector, I thought at first it would be pretty boring to start a thread showing specimens with the same colors, the same shapes and the same associations.
But the truth is that there is so much variety in the colors, the crystal habits and the associations that each piece is truly unique.
Thanks again.
Gérard
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Oct 12, 2014 04:25 Post subject: Re: Collection of Fiebre Verde |
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Fiebre Verde wrote: | Thank you for your comments Joseph!
Being almost a single-mineral/single-variety collector, I thought at first it would be pretty boring to start a thread showing specimens with the same colors, the same shapes and the same associations.
But the truth is that there is so much variety in the colors, the crystal habits and the associations that each piece is truly unique.
Thanks again.
Gérard |
Hi Gérard. Ithink I can easily get used to collecting emeralds for the rest of my life (if I had the chance) :-) Please keep them coming.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 12, 2014 11:44 Post subject: Re: Collection of Fiebre Verde - Special Colombian quartz for Pierre |
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Merci Pierre!
To increase even more your interest, I selected a special specimen just for you today.
It's a 20mm long double terminated quartz from the Muzo mining district.
The quartz crystal is literally sandwiched within an emerald crystal which has grown around it.
The color of the quartz crystal in the photos does not not look.. crystal clear!
Being almost surrounded by the emerald, it comes out with a greenish tone in the photos when the crystal is actually colorless (rock crystal).
Pierre, hopefully this will open your appetite for more specimens involving Colombian quartz in the future.
Also note the interesting (as always) crystallization patterns on one side of the emerald crystal.
Moral of the day: Emeralds can be very protective towards quartz
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
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32900 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
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Viewed: |
32808 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
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Viewed: |
32814 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
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32822 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
The rock crystal looks as green as the emerald |
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32973 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
Note the crystallization patterns on the faces of the emerald crystal. The quartz growth lines can be sensed. |
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32831 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
More crystallization patterns on the 2 small internal faces. |
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32800 Time(s) |
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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=19mm |
Description: |
Note the 2 small quartz crystals growing out from the main one. |
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Viewed: |
32827 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Oct 12, 2014 13:50 Post subject: Re: Collection of Fiebre Verde - Special Colombian quartz for Pierre |
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Fiebre Verde wrote: | Merci Pierre!
To increase even more your interest, I selected a special specimen just for you today.
It's a 20mm long double terminated quartz from the Muzo mining district.
The quartz crystal is literally sandwiched within an emerald crystal which has grown around it.
The color of the quartz crystal in the photos does not not look.. crystal clear!
Being almost surrounded by the emerald, it comes out with a greenish tone in the photos when the crystal is actually colorless (rock crystal).
Pierre, hopefully this will open your appetite for more specimens involving Colombian quartz in the future.
Also note the interesting (as always) crystallization patterns on one side of the emerald crystal.
Moral of the day: Emeralds can be very protective towards quartz |
Hi Gérard. I appreciate it. My wife and I just came back about an hour ago from digging quartz crystals. We found some nice clear ones but unfortunately no emeralds:-) Regards
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 14, 2014 10:32 Post subject: Re: Collection of Fiebre Verde - Coscuez |
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The Coscuez mining district encompasses several mines and has been historically a major source of Colombian emeralds.
Today Coscuez is still very active and accounts for a large part of the Colombian emerald production.
Matrix is a rusty-weathering light grey shale with interbedded (?) limestone (?).
Emerald crystals are fairly elongated and have a pale green color. They are unusually clean with no inclusions visible to the naked eye.
One of the striking feature of this specimen is an unusual variety of crystal habits and colors for the calcite. Color ranges from immaculate white to pinkish. Most of the calcite crystals are coated with a dusting of an unknown mineral. At the end of this post, there are some photos featuring the coated calcite, any suggestion appreciated.
Main emerald crystal is 13mm long.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm |
Description: |
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Viewed: |
32522 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm |
Description: |
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Viewed: |
32525 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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Viewed: |
32515 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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Viewed: |
32559 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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Viewed: |
32514 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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Viewed: |
32714 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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Viewed: |
32527 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
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32552 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Dimensions: | 85x80x60mm - Detail |
Description: |
Note the crystallization patterns on the bright face. |
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32587 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - Detail |
Description: |
Note the patterns on the termination as if it was sewed back!! (hopefully not) |
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Viewed: |
32534 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - FOV=4mm |
Description: |
Calcite crystal coated with a dusting of a brownish mineral I could not identify. |
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32524 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - FOV=4mm |
Description: |
Another calcite crystal coated with a dusting of a brownish mineral I could not identify. Note the pinkish tone of the calcite. |
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32511 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - FOV=8mm |
Description: |
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32516 Time(s) |
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Josele
Joined: 10 Apr 2012
Posts: 407
Location: Tarifa, Spain
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Posted: Oct 14, 2014 13:54 Post subject: Re: Collection of Fiebre Verde |
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In photos can't see the shape of these tiny crystals. They look like spheroidal aggregates and it seems that they are only on the calcite crystals, not on emeralds.
Maybe limonitized pyrite?
_________________ Josele |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 15, 2014 07:11 Post subject: Re: Collection of Fiebre Verde - Coating mineral on calcite crystals |
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Josele wrote: | In photos can't see the shape of these tiny crystals. They look like spheroidal aggregates and it seems that they are only on the calcite crystals, not on emeralds.
Maybe limonitized pyrite? |
Your observation is correct Josele, these tiny crystals only appear on the calcite.
I think you are spot on regarding the coating mineral, especially when looking at the color tones of the aggregates in the upper part of the crystal.
Thin pyrite aggregates are very common in Coscuez, more common than crystallized nodules of pyrite.
This specimen does not contain any pyrite aggregate visible to the naked eye.
Gérard
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 85x80x60mm - FOV=4mm |
Description: |
This is the best close up I could achieve with the equipment I use. |
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32562 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4894
Location: Barcelona
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Posted: Oct 15, 2014 07:14 Post subject: Re: Collection of Fiebre Verde |
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It could be Goethite (nodules, like the "cacoxenites" in Quartz from Brazil)
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 15, 2014 11:36 Post subject: Re: Collection of Fiebre Verde - La Pita (Polveros) |
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We are back to La Pita which has been producing in average more than 1/3 of the total Colombian production in the past 15 years.
The La Pita mine was discovered in 1997 and gave the name to a large mining district where many more mines have opened afterwards.
The black shale (which does not appear in the photos) is covered by lots of calcite crystals of different size. Part of the specimen is deeply weathered - there are iron oxide deposits almost everywhere. Some of the calcite scalenohedra (in the "front") are still pristine.
Only the upper part of the emerald is translucent. The crystal has a step-like termination which is not uncommon for this locality.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 90x55x39mm |
Description: |
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Viewed: |
32302 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 90x55x39mm |
Description: |
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Viewed: |
32326 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4cm |
Description: |
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Viewed: |
32323 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 90x55x39mm |
Description: |
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32319 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4.5cm |
Description: |
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Viewed: |
32271 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=4cm |
Description: |
Note the step-like termination and the crystallization patterns. |
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Viewed: |
32303 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | Detail - FOV=3.5cm |
Description: |
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Viewed: |
32283 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 20, 2014 15:00 Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas |
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Another specimen from La Pita with spectacular white and translucent calcite crystals. The calcite crystals have several orders of scalenohedral form.
Some very complex forms can also be observed.
Largest emerald is 14mm long.
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
31925 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
32151 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
31940 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
31909 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
32126 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
31964 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
Detail - Note the tiny crystallization patterns on the termination. |
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Viewed: |
31958 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x50x35mm |
Description: |
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Viewed: |
31935 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 21, 2014 07:46 Post subject: Re: Collection of Fiebre Verde - La Pita/Polveros |
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Another specimen from La Pita on a white calcite matrix.
A few patches of the black shale host rock can be seen here and there in the interstices.
Some of the calcite crystals are partly coated with black shale.
I added a couple of close ups of calcite scalenohedra (6450 & 6479)
Note the intriguing (for me at least!) striated surfaces on pic.6450
Clear/translucent emeralds are not very common in Polveros and this crystal is no exception.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31823 Time(s) |
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Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31845 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31858 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31835 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
Detail xl=13mm Note the crystallization patterns on the termination |
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Viewed: |
31832 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31870 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
Detail FOV=10mm Note the striated surfaces and the dusting of black shale. |
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Viewed: |
32041 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 80x55x80mm |
Description: |
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Viewed: |
31832 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 28, 2014 07:56 Post subject: Re: Collection of Fiebre Verde - Coscuez |
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Another small specimen from Coscuez.with a black shale matrix.coated with small aggregates of white and grey calcite and one small crystallized nodule of pyrite.
There is also a tiny (2mm long) crystal of quartz sitting next to the emerald.(6580, 6590 & 6617).
The 8mm long emerald crystal is translucent and has an asymmetrical pyramidal termination which is not a very common feature.
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31565 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31522 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31544 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
Detail - Note the small nodule of pyrite on the right-hand side. |
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Viewed: |
31495 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
Detail - Note the crystallization patterns on one face of the emerald crystal. |
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Viewed: |
31555 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
Detail - Note the tiny quartz crystal on the left-hand side of the emerald. |
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Viewed: |
31479 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31508 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
Detail - The pyramidal termination is more pronounced on this side of the crystal. |
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Viewed: |
31504 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31510 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 50x20x45mm |
Description: |
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Viewed: |
31512 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 29, 2014 07:01 Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas |
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A classic specimen from this productive locality. The black shale host rock is coated with grey/black calcite and small nodules of crystallized pyrite.
This specimen has a fairly large size considering there is only one single emerald crystal.
Luckily it escaped from the standard destructive trimming practices which consists in keeping only the surrounding material around the emerald.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x60x40mm |
Description: |
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Viewed: |
31384 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x60x40mm |
Description: |
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Viewed: |
31429 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x60x40mm |
Description: |
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Viewed: |
31566 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x60x40mm |
Description: |
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Viewed: |
31427 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x60x40mm |
Description: |
Detail - Emerald xl=17mm Note the complex crystallization patterns in the lower part of the crystal. |
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Viewed: |
31479 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 29, 2014 13:30 Post subject: Re: Collection of Fiebre Verde - Muzo |
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This specimen from Muzo has essentially a white to translucent calcite matrix.
There are some remainders of the black shale host rock around the emerald cluster.
The emerald cluster has grown partly over two small patches of black shale, which explains the dark tones of green which can be clearly sensed in some photos.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Not easy to take a decent picture of a white calcite matrix... The matrix looks completely washed out. |
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Viewed: |
31372 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Detail - Cluster is 24mm long |
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Viewed: |
31350 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Detail - Cluster is 24mm long. The black shale over which the cluster has partly grown causes some very nice color contrasts. |
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Viewed: |
31370 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Detail - Cluster is 24mm long. Note the step-like shape on the left side of the cluster. |
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Viewed: |
31350 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Detail - Cluster is 24mm long. |
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Viewed: |
31327 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 60x45x28mm |
Description: |
Detail - Cluster is 24mm long. |
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Viewed: |
31365 Time(s) |
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