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Collection of Fiebre Verde
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Fiebre Verde




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PostPosted: Nov 04, 2018 10:48    Post subject: Re: Collection of Fiebre Verde  

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




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PostPosted: Nov 04, 2018 12:12    Post subject: Re: Collection of Fiebre Verde  

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




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PostPosted: Nov 04, 2018 13:03    Post subject: Re: Collection of Fiebre Verde  

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




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PostPosted: Nov 06, 2018 02:33    Post subject: Re: Collection of Fiebre Verde - Chivor (#716)  

Aggregate of semi-transparent vivid green beryl crystals.


IMG_0181nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Albite (variety cleavelandite)
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 58x43x34mm, aggregate of xls up to 11mm
 Description:
 Viewed:  3890 Time(s)

IMG_0181nb.JPG


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Fiebre Verde




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PostPosted: Nov 11, 2018 07:34    Post subject: Re: Collection of Fiebre Verde - Cunas (#718)  

Semi-transparent beryl crystals.
Lustrous opalescent dolomite and calcite set against a contrasting black shale matrix (not visible in the image).



IMG_0286nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 53x35x25mm, main xl=31x7mm
 Description:
 Viewed:  3722 Time(s)

IMG_0286nb.JPG


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Fiebre Verde




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PostPosted: Nov 17, 2018 08:52    Post subject: Re: Collection of Fiebre Verde - Chivor (#715)  

Crystal exhibits the typical Chivor bluish cast.
Host rock is black shale.



IMG_0118nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 41x30x20mm, xl=9mm
 Description:
 Viewed:  3552 Time(s)

IMG_0118nb.JPG



IMG_0170nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 41x30x20mm, xl=9mm
 Description:
 Viewed:  3557 Time(s)

IMG_0170nb.JPG


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Fiebre Verde




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PostPosted: Nov 24, 2018 06:51    Post subject: Re: Collection of Fiebre Verde - Coscuez (#729)  

Lustrous iridescent grey dolomite, sparkling calcite, pyrite.
Host rock is black shale.



IMG_0442nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 29x52x29mm, xl=8x4.5mm
 Description:
 Viewed:  3402 Time(s)

IMG_0442nb.JPG



IMG_0487nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 29x52x29mm, xl=8x4.5mm
 Description:
 Viewed:  3409 Time(s)

IMG_0487nb.JPG


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Fiebre Verde




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PostPosted: Nov 29, 2018 02:32    Post subject: Re: Collection of Fiebre Verde - Coscuez (#714)  

Deep green crystal with multiple beveled termination edges.
Host rock is black shale.



IMG_0039nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 27x25x16mm, xl=13x3mm
 Description:
 Viewed:  3276 Time(s)

IMG_0039nb.JPG



IMG_0086nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 27x25x16mm, xl=13x3mm
 Description:
 Viewed:  3281 Time(s)

IMG_0086nb.JPG


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Philippe Durand




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PostPosted: Nov 29, 2018 15:14    Post subject: Re: Collection of Fiebre Verde  

a green light in the darkness
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Fiebre Verde




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PostPosted: Nov 30, 2018 09:49    Post subject: Re: Collection of Fiebre Verde  

Philippe Durand wrote:
a green light in the darkness

Very well said Philippe!
No more darkness...
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Fiebre Verde




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PostPosted: Dec 01, 2018 12:27    Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#705)  

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.



IMG_8960nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 40x44x41mm, xls up to 5mm
 Description:
 Viewed:  3111 Time(s)

IMG_8960nb.JPG



IMG_8999nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 40x44x41mm, xls up to 5mm
 Description:
 Viewed:  3107 Time(s)

IMG_8999nb.JPG



IMG_8991nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 40x44x41mm, xls up to 5mm
 Description:
 Viewed:  3117 Time(s)

IMG_8991nb.JPG


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Fiebre Verde




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PostPosted: Dec 17, 2018 15:40    Post subject: Re: Collection of Fiebre Verde - Muzo (#723)  

Muzo crystal with a stepped termination.
Host rock is black shale.



IMG_0544nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x19x24mm, xl=9x6mm
 Description:
 Viewed:  2847 Time(s)

IMG_0544nb.JPG



IMG_0638nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x19x24mm, xl=9x6mm
 Description:
 Viewed:  2846 Time(s)

IMG_0638nb.JPG



IMG_0604nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x19x24mm, xl=9x6mm
 Description:
 Viewed:  2852 Time(s)

IMG_0604nb.JPG


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Fiebre Verde




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PostPosted: Dec 21, 2018 13:17    Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#720)  

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.



IMG_0653nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz, Fluorite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x61x65mm, main xls=7 & 7mm
 Description:
 Viewed:  2710 Time(s)

IMG_0653nb.JPG



IMG_0737nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz, Fluorite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x61x65mm, main xls=7 & 7mm
 Description:
 Viewed:  2714 Time(s)

IMG_0737nb.JPG



IMG_0666nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz, Fluorite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x61x65mm, main xls=7 & 7mm
 Description:
 Viewed:  2713 Time(s)

IMG_0666nb.JPG



IMG_0685nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz, Fluorite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 100x61x65mm, main xls=7 & 7mm
 Description:
 Viewed:  2717 Time(s)

IMG_0685nb.JPG


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Fiebre Verde




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PostPosted: Dec 25, 2018 15:15    Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#721)  

Aggregate of 10s of vivid green beryl crystals and 'canutillos'.
Matrix is a mix of marble-like calcite and iron-stained calcite.



IMG_0779nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 52x80x79mm, main xl=12mm
 Description:
 Viewed:  2592 Time(s)

IMG_0779nb.JPG



IMG_0798nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 52x80x79mm, main xl=12mm
 Description:
 Viewed:  2586 Time(s)

IMG_0798nb.JPG



IMG_0816nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 52x80x79mm, main xl=12mm
 Description:
 Viewed:  2594 Time(s)

IMG_0816nb.JPG


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Fiebre Verde




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PostPosted: Dec 27, 2018 10:43    Post subject: Re: Collection of Fiebre Verde - Chivor (#731)  

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!



IMG_0924nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite)
 Locality:
Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x79x69mm, main xl=16mm, pyritohedron=7mm
 Description:
 Viewed:  2501 Time(s)

IMG_0924nb.JPG



IMG_0975nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite)
 Locality:
Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x79x69mm, main xl=16mm, pyritohedron=7mm
 Description:
Opposite side
 Viewed:  2506 Time(s)

IMG_0975nb.JPG



IMG_0935nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite)
 Locality:
Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x79x69mm, main xl=16mm, pyritohedron=7mm
 Description:
 Viewed:  2497 Time(s)

IMG_0935nb.JPG



IMG_1000nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Dolomite, Albite (variety cleavelandite)
 Locality:
Chivor Mining District, Camoyo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x79x69mm, main xl=16mm, pyritohedron=7mm
 Description:
 Viewed:  2506 Time(s)

IMG_1000nb.JPG


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Fiebre Verde




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PostPosted: Jan 01, 2019 09:27    Post subject: Re: Collection of Fiebre Verde - Pyrite, Chivor (#8502)  

Wish everyone a... shiny year!


IMG_1132nb.JPG
 Mineral: Pyrite
 Locality:
Chivor Mining District, Calichal Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 16x12mm
 Description:
Very likely a combination of several crystallographic forms - I'm sure Pete has a few ideas on this!
 Viewed:  2355 Time(s)

IMG_1132nb.JPG


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Fiebre Verde




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PostPosted: Jan 03, 2019 13:40    Post subject: Re: Collection of Fiebre Verde - Chivor (#732)  

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.



IMG_1048nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 57x87x46mm, longest xl=44mm
 Description:
 Viewed:  2250 Time(s)

IMG_1048nb.JPG



IMG_1065nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 57x87x46mm, longest xl=44mm
 Description:
 Viewed:  2246 Time(s)

IMG_1065nb.JPG



IMG_1090nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 57x87x46mm, longest xl=44mm
 Description:
 Viewed:  2254 Time(s)

IMG_1090nb.JPG


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Fiebre Verde




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PostPosted: Jan 13, 2019 15:48    Post subject: Re: Collection of Fiebre Verde - Coscuez (#690)  

Coscuez specimen with 25+ light-green beryl crystals.


IMG_8352nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 122x65x48mm, xls up to 8mm
 Description:
 Viewed:  2054 Time(s)

IMG_8352nb.JPG



IMG_8382nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 122x65x48mm, xls up to 8mm
 Description:
Striated calcite
 Viewed:  2055 Time(s)

IMG_8382nb.JPG



IMG_8370nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 122x65x48mm, xls up to 8mm
 Description:
 Viewed:  2056 Time(s)

IMG_8370nb.JPG


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PostPosted: Jan 17, 2019 13:00    Post subject: Re: Collection of Fiebre Verde - Chivor (#733)  

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.



IMG_1266nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Fluorapatite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm
 Description:
 Viewed:  1943 Time(s)

IMG_1266nb.JPG



IMG_1300nb.JPG
 Mineral: Fluorapatite and Calcite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm
 Description:
 Viewed:  1940 Time(s)

IMG_1300nb.JPG



IMG_1314nb.JPG
 Mineral: Fluorapatite and Calcite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 73x50x43mm, aggregate=25x15mm, fluorapatite xl=6mm
 Description:
 Viewed:  1942 Time(s)

IMG_1314nb.JPG


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Fiebre Verde




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PostPosted: Jan 25, 2019 03:34    Post subject: Re: Collection of Fiebre Verde - Coscuez (#734)  

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



IMG_1433nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 75x86x58mm, xl=9x6mm
 Description:
 Viewed:  1784 Time(s)

IMG_1433nb.JPG



IMG_1370nb.JPG
 Mineral: Beryl (variety emerald), Pyrite, Calcite, Dolomite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 75x86x58mm, xl=9x6mm
 Description:
 Viewed:  1794 Time(s)

IMG_1370nb.JPG


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