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Collection of Fiebre Verde
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Josele




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PostPosted: Oct 09, 2014 16:06    Post subject: Re: Collection of Fiebre Verde  

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!

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Fiebre Verde




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PostPosted: Oct 10, 2014 03:23    Post subject: Re: Collection of Fiebre Verde  

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




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PostPosted: Oct 10, 2014 12:12    Post subject: Re: Collection of Fiebre Verde - Coscuez  

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.



IMG_5459.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 75x60x40mm
 Description:
 Viewed:  20572 Time(s)

IMG_5459.JPG



IMG_5655.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 75x60x40mm
 Description:
Daylight
 Viewed:  20555 Time(s)

IMG_5655.JPG



IMG_5458.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 75x60x40mm
 Description:
 Viewed:  20547 Time(s)

IMG_5458.JPG



IMG_5467.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=6cm
 Description:
 Viewed:  20538 Time(s)

IMG_5467.JPG



IMG_5480.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3cm
 Description:
Note the crystallization patterns on one of the emerald crystal faces.
 Viewed:  20609 Time(s)

IMG_5480.JPG



IMG_5481.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
Crystallization patterns are fairly common in Colombian emeralds.
 Viewed:  20565 Time(s)

IMG_5481.JPG



IMG_5542.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 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.
 Viewed:  20560 Time(s)

IMG_5542.JPG



IMG_5634.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3.5cm
 Description:
Daylight
 Viewed:  20537 Time(s)

IMG_5634.JPG



IMG_5613.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=7cm
 Description:
Daylight
 Viewed:  20568 Time(s)

IMG_5613.JPG


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Fiebre Verde




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PostPosted: Oct 10, 2014 16:21    Post subject: Re: Collection of Fiebre Verde - Muzo  

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.



IMG_5659.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 125x70x40cm
 Description:
 Viewed:  20486 Time(s)

IMG_5659.JPG



IMG_5671.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 125x70x40cm
 Description:
 Viewed:  20490 Time(s)

IMG_5671.JPG



IMG_5686.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=6cm
 Description:
 Viewed:  20500 Time(s)

IMG_5686.JPG



IMG_5679.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
 Viewed:  20492 Time(s)

IMG_5679.JPG



IMG_5674.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
 Viewed:  20528 Time(s)

IMG_5674.JPG



IMG_5664.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
 Viewed:  20511 Time(s)

IMG_5664.JPG



IMG_5694.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Albite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 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.
 Viewed:  20515 Time(s)

IMG_5694.JPG


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Fiebre Verde




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PostPosted: Oct 11, 2014 16:22    Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas  

Black shale matrix with iron oxide stains..


IMG_5774.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x60x65mm
 Description:
 Viewed:  20380 Time(s)

IMG_5774.JPG



IMG_5741.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - xl length=14mm
 Description:
 Viewed:  20396 Time(s)

IMG_5741.JPG



IMG_5746.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - xl length=14mm
 Description:
 Viewed:  20411 Time(s)

IMG_5746.JPG



IMG_5791.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - xl length=14mm
 Description:
 Viewed:  20384 Time(s)

IMG_5791.JPG



IMG_5795.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - xl length=14mm
 Description:
 Viewed:  20396 Time(s)

IMG_5795.JPG


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Joseph DOliveira




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PostPosted: Oct 11, 2014 19:19    Post subject: Re: Collection of Fiebre Verde  

Thank you for sharing your collection with us, very nice photography and a remarkable selection of emerald specimens.
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Fiebre Verde




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PostPosted: Oct 12, 2014 02:02    Post subject: Re: Collection of Fiebre Verde  

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




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PostPosted: Oct 12, 2014 04:25    Post subject: Re: Collection of Fiebre Verde  

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.

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Fiebre Verde




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PostPosted: Oct 12, 2014 11:44    Post subject: Re: Collection of Fiebre Verde - Special Colombian quartz for Pierre  

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



IMG_5802.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
 Viewed:  20302 Time(s)

IMG_5802.JPG



IMG_5852.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
 Viewed:  20269 Time(s)

IMG_5852.JPG



IMG_5804.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
 Viewed:  20279 Time(s)

IMG_5804.JPG



IMG_5847.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
 Viewed:  20281 Time(s)

IMG_5847.JPG



IMG_5815.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
The rock crystal looks as green as the emerald
 Viewed:  20300 Time(s)

IMG_5815.JPG



IMG_5820.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
Note the crystallization patterns on the faces of the emerald crystal.
The quartz growth lines can be sensed.
 Viewed:  20280 Time(s)

IMG_5820.JPG



IMG_5837.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
More crystallization patterns on the 2 small internal faces.
 Viewed:  20267 Time(s)

IMG_5837.JPG



IMG_5874.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xl=19mm
 Description:
Note the 2 small quartz crystals growing out from the main one.
 Viewed:  20287 Time(s)

IMG_5874.JPG


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Pierre Joubert




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PostPosted: Oct 12, 2014 13:50    Post subject: Re: Collection of Fiebre Verde - Special Colombian quartz for Pierre  

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

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Fiebre Verde




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PostPosted: Oct 14, 2014 10:32    Post subject: Re: Collection of Fiebre Verde - Coscuez  

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.



IMG_6120.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm
 Description:
 Viewed:  20040 Time(s)

IMG_6120.JPG



IMG_5939.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm
 Description:
 Viewed:  20050 Time(s)

IMG_5939.JPG



IMG_5907.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20046 Time(s)

IMG_5907.JPG



IMG_5926.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20049 Time(s)

IMG_5926.JPG



IMG_5968.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20050 Time(s)

IMG_5968.JPG



IMG_5985.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20235 Time(s)

IMG_5985.JPG



IMG_6024.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20048 Time(s)

IMG_6024.JPG



IMG_6105.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
 Viewed:  20066 Time(s)

IMG_6105.JPG



IMG_4203.JPG
 Mineral: Beryl (variety emerald), Calcite
 Dimensions: 85x80x60mm - Detail
 Description:
Note the crystallization patterns on the bright face.
 Viewed:  20083 Time(s)

IMG_4203.JPG



IMG_5920.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - Detail
 Description:
Note the patterns on the termination as if it was sewed back!! (hopefully not)
 Viewed:  20043 Time(s)

IMG_5920.JPG



IMG_6081.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - FOV=4mm
 Description:
Calcite crystal coated with a dusting of a brownish mineral I could not identify.
 Viewed:  20047 Time(s)

IMG_6081.JPG



P1030489.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 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.
 Viewed:  20044 Time(s)

P1030489.JPG



P1030503.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - FOV=8mm
 Description:
White and pink calcite.
 Viewed:  20045 Time(s)

P1030503.JPG


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Josele




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PostPosted: Oct 14, 2014 13:54    Post subject: Re: Collection of Fiebre Verde  

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?

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Fiebre Verde




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PostPosted: Oct 15, 2014 07:11    Post subject: Re: Collection of Fiebre Verde - Coating mineral on calcite crystals  

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



IMG_6141.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 85x80x60mm - FOV=4mm
 Description:
This is the best close up I could achieve with the equipment I use.
 Viewed:  20101 Time(s)

IMG_6141.JPG


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PostPosted: Oct 15, 2014 07:14    Post subject: Re: Collection of Fiebre Verde  

It could be Goethite (nodules, like the "cacoxenites" in Quartz from Brazil)
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PostPosted: Oct 15, 2014 11:36    Post subject: Re: Collection of Fiebre Verde - La Pita (Polveros)  

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.



IMG_6147.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 90x55x39mm
 Description:
 Viewed:  19855 Time(s)

IMG_6147.JPG



IMG_6193.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 90x55x39mm
 Description:
 Viewed:  19858 Time(s)

IMG_6193.JPG



IMG_6222.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
 Viewed:  19878 Time(s)

IMG_6222.JPG



IMG_6203.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 90x55x39mm
 Description:
 Viewed:  19864 Time(s)

IMG_6203.JPG



IMG_6175.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4.5cm
 Description:
 Viewed:  19821 Time(s)

IMG_6175.JPG



IMG_6156.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
Note the step-like termination and the crystallization patterns.
 Viewed:  19844 Time(s)

IMG_6156.JPG



IMG_6163.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3.5cm
 Description:
 Viewed:  19829 Time(s)

IMG_6163.JPG


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PostPosted: Oct 20, 2014 15:00    Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas  

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.
.



IMG_6293.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
 Viewed:  19497 Time(s)

IMG_6293.JPG



IMG_6277.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
 Viewed:  19712 Time(s)

IMG_6277.JPG



IMG_6274.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
 Viewed:  19520 Time(s)

IMG_6274.JPG



IMG_6266.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
 Viewed:  19494 Time(s)

IMG_6266.JPG



IMG_6252.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
 Viewed:  19679 Time(s)

IMG_6252.JPG



IMG_6261.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
Detail - xl=14mm
 Viewed:  19523 Time(s)

IMG_6261.JPG



IMG_6302.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
Detail - Note the tiny crystallization patterns on the termination.
 Viewed:  19527 Time(s)

IMG_6302.JPG



IMG_6347.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x50x35mm
 Description:
Close up on the calcite
 Viewed:  19499 Time(s)

IMG_6347.JPG


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PostPosted: Oct 21, 2014 07:46    Post subject: Re: Collection of Fiebre Verde - La Pita/Polveros  

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.



IMG_6358.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
 Viewed:  19394 Time(s)

IMG_6358.JPG



IMG_6356.JPG
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
 Viewed:  19420 Time(s)

IMG_6356.JPG



IMG_6440.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
 Viewed:  19415 Time(s)

IMG_6440.JPG



IMG_6445.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
Detail xl=13mm
 Viewed:  19412 Time(s)

IMG_6445.JPG



IMG_6385.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
Detail xl=13mm
Note the crystallization patterns on the termination
 Viewed:  19399 Time(s)

IMG_6385.JPG



IMG_6392.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
Detail xl=13mm
 Viewed:  19415 Time(s)

IMG_6392.JPG



IMG_6450.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
Detail FOV=10mm
Note the striated surfaces and the dusting of black shale.
 Viewed:  19582 Time(s)

IMG_6450.JPG



IMG_6479.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 80x55x80mm
 Description:
Detail FOV=2cm
 Viewed:  19381 Time(s)

IMG_6479.JPG


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PostPosted: Oct 28, 2014 07:56    Post subject: Re: Collection of Fiebre Verde - Coscuez  

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.



IMG_6504.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
 Viewed:  19134 Time(s)

IMG_6504.JPG



IMG_6515.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
 Viewed:  19050 Time(s)

IMG_6515.JPG



IMG_6489.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
 Viewed:  19071 Time(s)

IMG_6489.JPG



IMG_6566.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail - Note the small nodule of pyrite on the right-hand side.
 Viewed:  19058 Time(s)

IMG_6566.JPG



IMG_6571.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail - Note the crystallization patterns on one face of the emerald crystal.
 Viewed:  19094 Time(s)

IMG_6571.JPG



IMG_6580.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail - Note the tiny quartz crystal on the left-hand side of the emerald.
 Viewed:  19060 Time(s)

IMG_6580.JPG



IMG_6590.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail
 Viewed:  19063 Time(s)

IMG_6590.JPG



IMG_6607.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail - The pyramidal termination is more pronounced on this side of the crystal.
 Viewed:  19055 Time(s)

IMG_6607.JPG



IMG_6639.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail
 Viewed:  19067 Time(s)

IMG_6639.JPG



IMG_6617.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite, Quartz
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 50x20x45mm
 Description:
Detail
 Viewed:  19075 Time(s)

IMG_6617.JPG


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PostPosted: Oct 29, 2014 07:01    Post subject: Re: Collection of Fiebre Verde - La Pita/Cunas  

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.



IMG_6803.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x60x40mm
 Description:
 Viewed:  18953 Time(s)

IMG_6803.JPG



IMG_6806.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x60x40mm
 Description:
 Viewed:  18975 Time(s)

IMG_6806.JPG



IMG_6826.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x60x40mm
 Description:
Detail - Emerald xl=17mm
 Viewed:  19019 Time(s)

IMG_6826.JPG



IMG_6849.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x60x40mm
 Description:
Detail - Emerald xl=17mm
 Viewed:  18993 Time(s)

IMG_6849.JPG



IMG_6870.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x60x40mm
 Description:
Detail - Emerald xl=17mm
Note the complex crystallization patterns in the lower part of the crystal.
 Viewed:  19001 Time(s)

IMG_6870.JPG


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PostPosted: Oct 29, 2014 13:30    Post subject: Re: Collection of Fiebre Verde - Muzo  

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.



IMG_6931.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Not easy to take a decent picture of a white calcite matrix... The matrix looks completely washed out.
 Viewed:  18928 Time(s)

IMG_6931.JPG



IMG_6904.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Detail - Cluster is 24mm long
 Viewed:  18905 Time(s)

IMG_6904.JPG



IMG_6909.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Detail - Cluster is 24mm long.
The black shale over which the cluster has partly grown causes some very nice color contrasts.
 Viewed:  18917 Time(s)

IMG_6909.JPG



IMG_6915.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Detail - Cluster is 24mm long.
Note the step-like shape on the left side of the cluster.
 Viewed:  18915 Time(s)

IMG_6915.JPG



IMG_6939.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Detail - Cluster is 24mm long.
 Viewed:  18906 Time(s)

IMG_6939.JPG



IMG_6958.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 60x45x28mm
 Description:
Detail - Cluster is 24mm long.
 Viewed:  18911 Time(s)

IMG_6958.JPG


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