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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 04, 2018 10:48 Post subject: Re: Collection of Fiebre Verde |
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Josele wrote: | Lovely apatite Gérard, and from a unusual locality, thanks for sharing. It's a pleasure this pink touch in your green jungle.
Color and transparency reminds me some Baltistan apatites that are very fluorescent, especially under short wave. Did you checked fluorescence? |
Many thanks for your appreciation Josele!
Although I don't need to restate that I am slightly biased towards the green variety of beryls, I am interested in all matrix specimens when visiting Colombia (Which happens 2-3 times a year).
Problem is that apatite, parisite, euclase, barite, or even sphalerite are rarely seen in matrix in the Bogota market.
Matrix specimens are undervalued by the miners who believe they can make a good business by extracting and selling crystals - probably a habit inherited from the way emeralds are mined.
I wish I could find that unknown miner who understood what he was doing by carefully extracting that matrix specimen, and congratulate him on the fantastic job he has done!
Regarding your last comment... I have yet to invest in a short-wave UV lamp :-(
Gérard
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Bergur_E_Sigurdarson
Joined: 21 Dec 2017
Posts: 147
Location: Paipa, Colombia
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Posted: Nov 04, 2018 12:12 Post subject: Re: Collection of Fiebre Verde |
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I have a few of the Colombian Fluor-Apatites, and they do light up a nice pink under my Convoy... no idea about SW though.
And I do agree with the problem in Colombia of loose crystals over specimens on matrix....
...and in my opinion another problem related to buying anything other than emeralds is that sellers tend to think that everything should be priced like emeralds!
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 04, 2018 13:03 Post subject: Re: Collection of Fiebre Verde |
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Bergur_E_Sigurdarson wrote: |
And I do agree with the problem in Colombia of loose crystals over specimens on matrix....
...and in my opinion another problem related to buying anything other than emeralds is that sellers tend to think that everything should be priced like emeralds! |
Exactly! In the local mineral business - which is by the way only a side business - emeralds set the price standards.
And when discussing the price with the seller, it is difficult to cut out the artificial inflation of prices with sensible arguments.
The negotiation becomes even more difficult if the specimen comes from one of the emerald districts.
And if that mineral happens to be green then it must be emerald - no wonder why the most expensive fuchsites on earth are from Colombia :-)
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 06, 2018 02:33 Post subject: Re: Collection of Fiebre Verde - Chivor (#716) |
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Aggregate of semi-transparent vivid green beryl crystals.
Mineral: | Beryl (variety emerald), Pyrite, Calcite, Albite (variety cleavelandite) |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 58x43x34mm, aggregate of xls up to 11mm |
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21436 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 11, 2018 07:34 Post subject: Re: Collection of Fiebre Verde - Cunas (#718) |
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Semi-transparent beryl crystals.
Lustrous opalescent dolomite and calcite set against a contrasting black shale matrix (not visible in the image).
Mineral: | Beryl (variety emerald), Calcite, Dolomite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x35x25mm, main xl=31x7mm |
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21194 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 17, 2018 08:52 Post subject: Re: Collection of Fiebre Verde - Chivor (#715) |
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Crystal exhibits the typical Chivor bluish cast.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 41x30x20mm, xl=9mm |
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21017 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 41x30x20mm, xl=9mm |
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21018 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 24, 2018 06:51 Post subject: Re: Collection of Fiebre Verde - Coscuez (#729) |
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Lustrous iridescent grey dolomite, sparkling calcite, pyrite.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 29x52x29mm, xl=8x4.5mm |
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20849 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 29x52x29mm, xl=8x4.5mm |
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20882 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 29, 2018 02:32 Post subject: Re: Collection of Fiebre Verde - Coscuez (#714) |
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Deep green crystal with multiple beveled termination edges.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 27x25x16mm, xl=13x3mm |
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20787 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 27x25x16mm, xl=13x3mm |
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20815 Time(s) |
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Philippe Durand
Joined: 10 May 2016
Posts: 628
Location: Normandie
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Posted: Nov 29, 2018 15:14 Post subject: Re: Collection of Fiebre Verde |
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a green light in the darkness
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Nov 30, 2018 09:49 Post subject: Re: Collection of Fiebre Verde |
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Philippe Durand wrote: | a green light in the darkness |
Very well said Philippe!
No more darkness...
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Dec 01, 2018 12:27 Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#705) |
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White striated calcite, quartz, with patches of limonite.
Most of the beryl crystals are "canutillos" - a Colombian miner's term which denotes prismatic gem crystals too small and too thin to be faceted, but are sometimes set into jewelry.
Host rock is coarse-grained black shale.
Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 40x44x41mm, xls up to 5mm |
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20561 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 40x44x41mm, xls up to 5mm |
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20547 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 40x44x41mm, xls up to 5mm |
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20590 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Dec 17, 2018 15:40 Post subject: Re: Collection of Fiebre Verde - Muzo (#723) |
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Muzo crystal with a stepped termination.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 37x19x24mm, xl=9x6mm |
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20288 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 37x19x24mm, xl=9x6mm |
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20302 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 37x19x24mm, xl=9x6mm |
Description: |
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20308 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Dec 21, 2018 13:17 Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#720) |
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Fluorite and emerald are good friends in the Western Emerald Belt.
They coexist not only in Peñas Blancas but also in Muzo.
Host rock is the typical coarse-grained black shale of Peñas Blancas.
Mineral: | Beryl (variety emerald), Calcite, Quartz, Fluorite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x61x65mm, main xls=7 & 7mm |
Description: |
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20172 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz, Fluorite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x61x65mm, main xls=7 & 7mm |
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20167 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz, Fluorite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x61x65mm, main xls=7 & 7mm |
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20161 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz, Fluorite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 100x61x65mm, main xls=7 & 7mm |
Description: |
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Viewed: |
20175 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Dec 25, 2018 15:15 Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#721) |
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Aggregate of 10s of vivid green beryl crystals and 'canutillos'.
Matrix is a mix of marble-like calcite and iron-stained calcite.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 52x80x79mm, main xl=12mm |
Description: |
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20026 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 52x80x79mm, main xl=12mm |
Description: |
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20028 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 52x80x79mm, main xl=12mm |
Description: |
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20069 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Dec 27, 2018 10:43 Post subject: Re: Collection of Fiebre Verde - Chivor (#731) |
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Four emerald crystals with a slight bluish cast. Main one is double terminated.
On the opposite side, a rather large and lustrous pyrite dodecahedron in a dolomite vug.
Host rock is a typical hydrothermal breccia (called locally "cenicero" i.e. ashtray, generally, well delimited white coloured zone which has the aspect of ash) which consists of tiny remnants of black shale and folded albitite fragments in a matrix of albite.
Note that these thrust-related folds are synchronous to emerald deposition and to the mineralizing episode at large.
The fluid circulation associated to the hydrothermal breccia has induced intense albitisation, carbonatisation and pyritisation of the surrounding black shales.
PS: Specimen is from a locality not available in the dictionary list.
Chivor mining district, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department
Could one of the administrators be kind enough to add this entry in the locality list for Colombia? Much appreciated!
Mineral: | Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite) |
Locality: | Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 95x79x69mm, main xl=16mm, pyritohedron=7mm |
Description: |
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19914 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite) |
Locality: | Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 95x79x69mm, main xl=16mm, pyritohedron=7mm |
Description: |
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19920 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite) |
Locality: | Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 95x79x69mm, main xl=16mm, pyritohedron=7mm |
Description: |
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19886 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite) |
Locality: | Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 95x79x69mm, main xl=16mm, pyritohedron=7mm |
Description: |
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19954 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jan 01, 2019 09:27 Post subject: Re: Collection of Fiebre Verde - Pyrite, Chivor (#8502) |
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Wish everyone a... shiny year!
Mineral: | Pyrite |
Locality: | Chivor Mining District, Calichal Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 16x12mm |
Description: |
Very likely a combination of several crystallographic forms - I'm sure Pete has a few ideas on this! |
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19753 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jan 03, 2019 13:40 Post subject: Re: Collection of Fiebre Verde - Chivor (#732) |
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20+ elongated beryl crystals, some of them are bent by a few degrees.
Difficult to determine if the curvature is caused by post-crystallization deformation and recrystallization or if is due to syn-crystallization events.
Druse of bluish albite, pyrite, on an iron-stained black shale.
Very likely from the Camoyo mine.
Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 57x87x46mm, longest xl=44mm |
Description: |
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19657 Time(s) |
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Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 57x87x46mm, longest xl=44mm |
Description: |
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19676 Time(s) |
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Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Pyrite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 57x87x46mm, longest xl=44mm |
Description: |
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19706 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jan 13, 2019 15:48 Post subject: Re: Collection of Fiebre Verde - Coscuez (#690) |
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Coscuez specimen with 25+ light-green beryl crystals.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 122x65x48mm, xls up to 8mm |
Description: |
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19449 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 122x65x48mm, xls up to 8mm |
Description: |
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Viewed: |
19491 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 122x65x48mm, xls up to 8mm |
Description: |
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Viewed: |
19459 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jan 17, 2019 13:00 Post subject: Re: Collection of Fiebre Verde - Chivor (#733) |
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Rare association of emerald and pink fluorapatite from Chivor - exact locality unknown.
Unlike the fluorapatite, the emerald is barely crystallized.
The brittle calcite matrix contains remnants of the host rock in the form of black shale lenses.
Mineral: | Beryl (variety emerald), Calcite, Fluorapatite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm |
Description: |
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19419 Time(s) |
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Mineral: | Fluorapatite and Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm |
Description: |
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19412 Time(s) |
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Mineral: | Fluorapatite and Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm |
Description: |
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19332 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jan 25, 2019 03:34 Post subject: Re: Collection of Fiebre Verde - Coscuez (#734) |
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Coscuez crystal with an intense green color.
Some of the small grey dolomite crystals exhibit almost a metallic luster.
Calcite crystals have slightly striated faces.
Host rock is black shale
Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 75x86x58mm, xl=9x6mm |
Description: |
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Viewed: |
19140 Time(s) |
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Mineral: | Beryl (variety emerald), Pyrite, Calcite, Dolomite |
Locality: | Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 75x86x58mm, xl=9x6mm |
Description: |
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Viewed: |
19169 Time(s) |
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