View previous topic :: View next topic |
Author |
Message |
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 14, 2016 06:57 Post subject: Re: Collection of Fiebre Verde - Chivor (#404) |
|
|
Another glowing crystal, just for Tobi :-)
Host rock is black shale.
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 43x35x41mm, xl=10mm |
Description: |
|
Viewed: |
34205 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 43x35x41mm, xl=10mm |
Description: |
|
Viewed: |
34175 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 43x35x41mm, xl=10mm |
Description: |
|
Viewed: |
34198 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 15, 2016 09:27 Post subject: Re: Collection of Fiebre Verde - Chivor (#450) |
|
|
This specimen is from a relatively recent find (2010/11) from the El Acuario mine, in the Eastern Belt.
The gray shale host rock is coated by a layer of pyrite nodules.
Another characteristic of this pocket is the pencil-shaped emerald crystals.
They are usually short (less than a centimeter) and contain very few inclusions.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34108 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34121 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34134 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34107 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34085 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 92x41x52mm, main xl=4mm |
Description: |
|
Viewed: |
34179 Time(s) |
|
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2088
Location: Oklahoma
|
Posted: Jan 15, 2016 17:15 Post subject: Re: Collection of Fiebre Verde |
|
|
I love the complex terminations on this last specimen. Wonderful.
Michael
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 16, 2016 17:40 Post subject: Re: Collection of Fiebre Verde |
|
|
crosstimber wrote: | I love the complex terminations on this last specimen. Wonderful.
Michael |
Thanks for sharing your enthusiasm Michael!
Although they are less known than their Western counterpart, I find that the specimens of the Eastern belt have a much wider variety and range of shapes, terminations, colors and hues.
For faceted stones, the production of the Chivor district accounts for less than 10% of the total Colombian production. If we assume the ratio is similar for the specimens that reach the market, this does not give lot of opportunities to appreciate and value the incredible diversity of the Chivor specimens.
Gérard
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 17, 2016 14:27 Post subject: Re: Collection of Fiebre Verde - La Pita (#167) |
|
|
Back to the Western belt with a Polveros specimen.
Polveros is the southernmost locality of the La Pita mining district.
Emeralds from this locality tend to be less saturated than in Cunas or La Pita (La Pita name refers to a locality and a district - a bit confusing!).
White and semi-transparent striated calcite on black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 41x52x59mm, xl=26x9mm |
Description: |
|
Viewed: |
33919 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 41x52x59mm, xl=26x9mm |
Description: |
|
Viewed: |
33927 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 41x52x59mm, xl=26x9mm |
Description: |
|
Viewed: |
33925 Time(s) |
|
|
|
Back to top |
|
|
Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 18, 2016 10:30 Post subject: Re: Collection of Fiebre Verde |
|
|
Tobi, believe it or not but lot of crystals I have seen coming from that pocket have similar shapes and terminations! They are usually clean and not very saturated.
This was a real bonanza pocket but very few specimens reached the market.
Not sure if that mine is still in production - most of the mines of the Eastern belt are still in the hands of small owners and unless you visit the mines often and talk to the people, it's very difficult to find out what's their current production status.
Gérard
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 19, 2016 16:22 Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#204) |
|
|
When it comes to minerals, Colombia is mostly known for Beryl, Euclase and, to a lesser extent, Parisite.
But this does not do justice to the Colombian quartz.
Peñas Blancas is known for producing emeralds but also for its beautiful clear colorless quartz.
This specimen features a quartz cluster with some very clear crystals.
The emerald is nested right in the center of the cluster and has the typical Peñas Blancas velvety appearance.
Color is very slightly bluish green.
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40mm across, xl=7mm |
Description: |
|
Viewed: |
33744 Time(s) |
|
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40mm across, xl=7mm |
Description: |
|
Viewed: |
33738 Time(s) |
|
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40mm across, xl=7mm |
Description: |
|
Viewed: |
33736 Time(s) |
|
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40mm across, xl=7mm |
Description: |
|
Viewed: |
33776 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 22, 2016 07:18 Post subject: Re: Collection of Fiebre Verde - Muzo (#9) |
|
|
Although less spectacular than in Peñas Blancas, water clear quartz can be also found in Muzo.
The tip of the (only) quartz crystal of this specimen is party visible at the bottom-center of #1643.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 56x46x34mm, xl=13mm |
Description: |
|
Viewed: |
33556 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 56x46x34mm, xl=13mm |
Description: |
|
Viewed: |
33575 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 56x46x34mm, xl=13mm |
Description: |
|
Viewed: |
33551 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 56x46x34mm, xl=13mm |
Description: |
|
Viewed: |
33580 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Pyrite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 56x46x34mm, xl=13mm |
Description: |
|
Viewed: |
33602 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 23, 2016 11:00 Post subject: Re: Collection of Fiebre Verde - La Pita/Polveros (#268) |
|
|
Too good to be true, highly suspicious position of the beryl crystal with respect to the matrix, and so on....
Of course, this came immediately to my mind when I first saw this specimen.
At that time (2009) a new pocket had just been found in Polveros.
Unfortunately the emeralds were far from being clean and were lacking color.
But the quality of the calcite crystals was good enough to justify some "art work" by the local craftsmen.
The way the beryl prism is contacted in several points at its base rules out any fakery.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 45x32x28mm, xl=18x7mm |
Description: |
|
Viewed: |
33430 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 45x32x28mm, xl=18x7mm |
Description: |
|
Viewed: |
33498 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Polveros Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 45x32x28mm, xl=18x7mm |
Description: |
|
Viewed: |
33487 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 24, 2016 13:20 Post subject: Re: Collection of Fiebre Verde - Muzo (#189) |
|
|
Emerald aggregate from Muzo.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, crystal aggregate=25x8mm |
Description: |
|
Viewed: |
33446 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33434 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33403 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33411 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33408 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33373 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 58x31x34mm, xl aggregate=25x8mm |
Description: |
|
Viewed: |
33398 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 25, 2016 09:17 Post subject: Re: Collection of Fiebre Verde - La Pita (#220) |
|
|
From the La Pita district.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 35x38x37mm, main xl=12x4mm |
Description: |
|
Viewed: |
33267 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 35x38x37mm, main xl=12x4mm |
Description: |
|
Viewed: |
33294 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 35x38x37mm, main xl=12x4mm |
Description: |
|
Viewed: |
33248 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Dimensions: | 35x38x37mm, main xl=12x4mm |
Description: |
|
Viewed: |
33288 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 35x38x37mm, main xl=12x4mm |
Description: |
|
Viewed: |
33296 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 26, 2016 18:13 Post subject: Re: Collection of Fiebre Verde - Muzo (#54) |
|
|
This Muzo specimen baffles me.
Can't figure out what's the anthracite/graphite-like material coating the shale matrix (see last image for close-up).
I have never seen this crystal habit in Muzo or any nearby locality.
Could that simply be... black calcite?
In some areas, some white calcite is squeezed between the shale host rock and that mysterious black material.
The beryl crystal was broken into two parts and the fracture was filled with that material.
Although not equally developed, first and second order prisms are clearly visible.
Very interested to hear your suggestions and ideas!
Gérard
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33163 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33167 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33159 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33146 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33186 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
|
Viewed: |
33232 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 62x27x39mm, original xl=25mm |
Description: |
Any idea on what that could be? |
|
Viewed: |
33115 Time(s) |
|
|
|
Back to top |
|
|
Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
|
Posted: Jan 26, 2016 23:51 Post subject: Re: Collection of Fiebre Verde - Muzo (#54) |
|
|
Fiebre Verde wrote: | ...Can't figure out what's the anthracite/graphite-like material coating the shale matrix (see last image for close-up).
I have never seen this crystal habit in Muzo or any nearby locality.
Could that simply be... black calcite?... |
Carbonaceous inclusions?
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 27, 2016 07:43 Post subject: Re: Collection of Fiebre Verde |
|
|
Thanks Jordi.
Could also be the result of a graphitization process of carbonaceous material?
It does leave black marks on paper but so does carbonaceous black shale.
Not a big deal - will tag this as consolidated carbonaceous debris.
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 27, 2016 12:22 Post subject: Re: Collection of Fiebre Verde - Cunas (#182) |
|
|
Dolomite crystal and emerald cluster over a white calcite rhomb.
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | rhomb size=30x30x30mm, longest xl=18mm |
Description: |
|
Viewed: |
33006 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | rhomb size=30x30x30mm, longest xl=18mm |
Description: |
|
Viewed: |
32951 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | rhomb size=30x30x30mm, longest xl=18mm |
Description: |
|
Viewed: |
33058 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | rhomb size=30x30x30mm, longest xl=18mm |
Description: |
|
Viewed: |
32992 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 28, 2016 15:09 Post subject: Re: Collection of Fiebre Verde - Cunas (#30) |
|
|
Main crystal is double terminated.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 28x33x28mm, main xls=18mm & 9mm |
Description: |
|
Viewed: |
32854 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 28x33x28mm, main xls=18mm & 9mm |
Description: |
|
Viewed: |
32854 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 29, 2016 17:16 Post subject: Re: Collection of Fiebre Verde - Coscuez (#10) |
|
|
In September 2015, the UK-based mining company Gemfields has entered into binding agreements to acquire controlling interests in two emerald projects in Colombia, one of them being Coscuez. At completion, Gemfields will acquire an indirect 70% interest in a Colombian company which will hold the mining contract for the Coscuez mine.
It's still too early to measure the impact of this major takeover on the specimen production from this historical mine.
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40x43x40mm, xl=9mm |
Description: |
|
Viewed: |
32757 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40x43x40mm, xl=9mm |
Description: |
|
Viewed: |
32725 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40x43x40mm, xl=9mm |
Description: |
|
Viewed: |
32778 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40x43x40mm, xl=9mm |
Description: |
|
Viewed: |
32755 Time(s) |
|
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
|
Dimensions: | 40x43x40mm, xl=9mm |
Description: |
|
Viewed: |
32724 Time(s) |
|
|
|
Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
|
Posted: Jan 30, 2016 13:11 Post subject: Re: Collection of Fiebre Verde - Hexagonal tabular pink apatite & emerald (#242) |
|
|
Not the most aesthetic specimen of my collection but probably the most exotic one.
I found this specimen in a European show, 7 years ago. The label mentions Peñas Blancas for the locality name but nothing is less sure.
Assuming it's not a fake (which is a reasonable assumption considering the poor quality of the apatite crystals and the way they are contacted by the emeralds from almost every side), here is the dilemma:
1) The only Colombian locality producing/having produced pink tabular apatite is La Marina mine which is located right in the heart of the Western Emerald Belt.
2) The Mindat mineral list for La Marina is limited to albite, euclase and apatite. Never heard of any emerald occurrence in La Marina, even from the most enthusiastic dealers in Bogota (I like to challenge them but that's another story...)
Of course, the other option is that it's not Colombian.
It is reported that pink apatite, beryl (variety emerald) and albite (variety cleavelandite) can be found in the Laghman pegmatite province in Afghanistan. But Laghman province is vast and these minerals do not necessarily coexist in the same locality. Not even mentioning that Laghman emeralds are known to be embedded in schist matrix.
So Laghman is a very remote possibility...
In the absence of further evidence, I will label this specimen as Colombian.
Matrix is highly oxidized albite.
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32707 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32746 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32660 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32712 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32666 Time(s) |
|
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Apatite |
Locality: | Colombia | |
|
Dimensions: | 37x18x33mm |
Description: |
|
Viewed: |
32635 Time(s) |
|
|
|
Back to top |
|
|
Josele
Joined: 10 Apr 2012
Posts: 410
Location: Tarifa, Spain
|
|
Back to top |
|
|
|