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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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 Posted: Jul 18, 2015 07:14 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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Unusual specimen from Muzo.
Acicular crystal habit is not common at all in the 2 Colombian emerald districts.
Could be aragonite or calcite... or something else?
In the last close-up image, the brownish elongated crystal is very likely parisite.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia |  |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
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| Viewed: |
19752 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
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| Viewed: |
19722 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
| Complex crystallization patterns on the C-face. |
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| Viewed: |
19687 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
| Note the presence of acicular crystals all around the emerald. |
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| Viewed: |
19742 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
| Aragonite, calcite... or else? |
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| Viewed: |
19700 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
| Aragonite, calcite... or else? |
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| Viewed: |
19713 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
| FOV=10mm - Aragonite, calcite... or else? |
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| Viewed: |
19676 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x40x31mm, xl=15x10mm |
| Description: |
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| Viewed: |
19712 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 18, 2015 12:24 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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For those who are sick and tired of seeing emeralds in this thread, here is a nice break (Well, sort of, it's still green!)
I just found out that rendering dioptase-green is even more difficult than emerald-green.
This specimen was purchased by my father in Brazzaville back in the early 70's.
I doesn't seem to be glued but I might be wrong.
As per the locality, I have no idea where it comes from, so your comments and suggestions are welcomed. I labeled it as from "Republic of the Congo" but it could as well be from the ex-Zaire.
| Mineral: | Dioptase |
| Locality: | | Democratic Republic of the Congo | |
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| Dimensions: | 145x95x75mm |
| Description: |
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| Viewed: |
19682 Time(s) |
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| Mineral: | Dioptase |
| Locality: | | Democratic Republic of the Congo | |
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| Dimensions: | 145x95x75mm |
| Description: |
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| Viewed: |
19699 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4530
Location: Barcelona
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| Posted: Jul 18, 2015 15:02 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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It looks like Calcite-Aragonite. Is very easy to check it, try if it fizz in dilute HCl or if it dissolves inside vinegar (after 24 hours)
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4530
Location: Barcelona
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| Posted: Jul 18, 2015 15:14 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 18, 2015 15:15 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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| Jordi Fabre wrote: |
It looks like Calcite-Aragonite. Is very easy to check it, try if it fizz in dilute HCl or if it dissolves inside vinegar (after 24 hours) |
Thanks Jordi - I will give it a try.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 18, 2015 15:34 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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| Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever.
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 18, 2015 16:42 Post subject: Re: Collection of Fiebre Verde - Chivor (#548) |
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Chivor at its very best!
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 25x25x32mm, xl=8x3mm |
| Description: |
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| Viewed: |
19587 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 25x25x32mm, xl=8x3mm |
| Description: |
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| Viewed: |
19578 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 25x25x32mm, xl=8x3mm |
| Description: |
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| Viewed: |
19580 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 25x25x32mm, xl=8x3mm |
| Description: |
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| Viewed: |
19588 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 25x25x32mm, xl=8x3mm |
| Description: |
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| Viewed: |
19582 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 19, 2015 08:43 Post subject: Re: Collection of Fiebre Verde - Cunas (#551) |
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A beautifully balanced specimen from La Pita/Cunas with white calcite and oxidized pyrite.
Host rock is black shale (barely visible in the bottom left of the first image).
| 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: | 26x17x30mm, xl=9x2mm |
| Description: |
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| Viewed: |
19486 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: | 26x17x30mm, xl=9x2mm |
| Description: |
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| Viewed: |
19476 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: | 26x17x30mm, xl=9x2mm |
| Description: |
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| Viewed: |
19494 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: | 26x17x30mm, xl=9x2mm |
| Description: |
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| Viewed: |
19511 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 21, 2015 16:23 Post subject: Re: Collection of Fiebre Verde - Chivor (#553) |
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Another little jewel from the El Oriente mine in the Chivor district.
| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | xl=12x6mm |
| Description: |
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| Viewed: |
19318 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | xl=12x6mm |
| Description: |
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| Viewed: |
19315 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | xl=12x6mm |
| Description: |
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| Viewed: |
19341 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Jul 23, 2015 05:04 Post subject: Re: Collection of Fiebre Verde - Muzo with rock crystal (#554) |
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The emerald - colorless transparent quartz association is more commonly found in Peñas Blancas than in Muzo.
White calcite is also visible on the opposite side of the emerald aggregate.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 53x39mm, xl=25x23mm |
| Description: |
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| Viewed: |
19274 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 53x39mm, xl=25x23mm |
| Description: |
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| Viewed: |
19262 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 53x39mm, xl=25x23mm |
| Description: |
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| Viewed: |
19275 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 53x39mm, xl=25x23mm |
| Description: |
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| Viewed: |
19278 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 53x39mm, xl=25x23mm |
| Description: |
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| Viewed: |
19294 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 04, 2015 16:53 Post subject: Re: Collection of Fiebre Verde - Muzo (#555) |
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Most of the fractures and internal cracks are perpendicular to the C-axis although some of them are parallel to it - see last image.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 64x55x65mm, xl=27mm |
| Description: |
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| Viewed: |
19018 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 64x55x65mm, xl=27mm |
| Description: |
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| Viewed: |
19016 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 64x55x65mm, xl=27mm |
| Description: |
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| Viewed: |
19001 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Aug 05, 2015 01:49 Post subject: Re: Collection of Fiebre Verde |
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Hi Gérard. Your specimens keep on amazing me. Please keep posting.
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 05, 2015 04:33 Post subject: Re: Collection of Fiebre Verde |
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| Pierre Joubert wrote: | | Hi Gérard. Your specimens keep on amazing me. Please keep posting. |
Hi Pierre - good to hear from you!
Thanks for your kind comments.
More specimens to come in association with your favorite mineral.
Gérard
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Aug 05, 2015 05:02 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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| Fiebre Verde wrote: | | Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever. |
Hi Gerard. The orientation and irregularity of the dioptase crystals do look a bit unusual. You have a choice: dip it as Jordi suggested, or keep it with a question mark.
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 05, 2015 05:34 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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| Pierre Joubert wrote: | | Fiebre Verde wrote: | | Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever. |
Hi Gerard. The orientation and irregularity of the dioptase crystals do look a bit unusual. You have a choice: dip it as Jordi suggested, or keep it with a question mark. |
Thanks for your remarks Pierre.
Should it be a glued specimen, it's a bit too late to tell my dad, from whom I inherited this vivid green... artistic object.
Will just keep it with a question mark along with my "too nice to be true" group of specimens.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 06, 2015 15:53 Post subject: Re: Collection of Fiebre Verde - La Pita with rock crystals (#556) |
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Emerald clusters are fairly common in the Western belt.
Complex crystallization patterns can be clearly seen on the faces of the various prisms (first 2 images).
Last image features a couple of clear colorless quartz crystals intersecting the upper part of the cluster.
| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 21x35mm, cluster=20mm long |
| Description: |
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| Viewed: |
18705 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 21x35mm, cluster=20mm long |
| Description: |
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| Viewed: |
18717 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 21x35mm, cluster=20mm long |
| Description: |
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| Viewed: |
18721 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Quartz |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 21x35mm, cluster=20mm long |
| Description: |
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| Viewed: |
18716 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 07, 2015 08:39 Post subject: Re: Collection of Fiebre Verde - Chivor (#557) |
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This specimen comes from the Buena Vista mine in the Chivor district.
The Buena Vista mine is located on a hill overlooking the surrounding area (might explain the origin of the name "Nice view"?).
Administratively speaking, it is off the "green" state of Boyacá by a few hundred meters, where virtually all the Colombian emeralds come from.
Not only the view from that open-pit mine is nice but also the quality of the emeralds it produces (when the mine operates, which does not happen often).
The one featured here below is a fine example of the top quality material produced in the Chivor district, from a collector's point of view.
Host rock is a hard clay material also known as argillite.
| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18622 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18620 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18599 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18609 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18591 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18621 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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| Dimensions: | 30x12x42mm, main xl=13x5mm |
| Description: |
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| Viewed: |
18621 Time(s) |
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Tobi
Joined: 07 Apr 2009
Posts: 3324
Location: Good Old Germany
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| Posted: Aug 08, 2015 06:54 Post subject: Re: Collection of Fiebre Verde |
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| The more emeralds you show us, the more fascinated I am!
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 08, 2015 07:46 Post subject: Re: Collection of Fiebre Verde |
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| Tobi wrote: | | The more emeralds you show us, the more fascinated I am! |
Thanks Tobi for showing your appreciation!
Got hooked on the Colombian green treasure a while ago and stopped worrying about being addicted soon after.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 879
Location: Paris Area
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| Posted: Aug 10, 2015 09:49 Post subject: Re: Collection of Fiebre Verde - Chivor (#562) |
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A small specimen from a new find in the Chivor district.
All the crystals I have seen from this find exhibit a strong saturation.
Host rock is a crumbly gray shale.
| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18353 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18353 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18352 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18369 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18350 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
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| Viewed: |
18352 Time(s) |
|
| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
| Dimensions: | 30x29x41mm, main xl=10mm |
| Description: |
|
| Viewed: |
18398 Time(s) |
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