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Collection of Fiebre Verde
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Fiebre Verde




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PostPosted: Aug 10, 2015 16:41    Post subject: Re: Collection of Fiebre Verde - Cluster from La Pita (#564)  

A cluster from the Cunas mine which has been continuously producing fine emeralds in the past few years.
The Cunas mine was privately owned by the emerald czar Victor Carranza.



IMG_7927nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 21x17x20mm, largest xl=18mm (H)
 Description:
 Viewed:  18964 Time(s)

IMG_7927nb.JPG


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Fiebre Verde




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PostPosted: Aug 11, 2015 15:51    Post subject: Re: Collection of Fiebre Verde - Coscuez (#563)  

The beryls are associated with black and white calcite. No host rock.


IMG_7810nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x46x46mm, cluster=20mm
 Description:
 Viewed:  18900 Time(s)

IMG_7810nb.JPG



IMG_7838nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x46x46mm, cluster=20mm
 Description:
 Viewed:  18875 Time(s)

IMG_7838nb.JPG



IMG_7879nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x46x46mm, cluster=20mm
 Description:
 Viewed:  18875 Time(s)

IMG_7879nb.JPG


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Fiebre Verde




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PostPosted: Aug 17, 2015 05:30    Post subject: Re: Collection of Fiebre Verde - Coscuez Aggregate (#558)  

Aggregate of 3 crystals.
Host rock is black shale.



IMG_7196nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18803 Time(s)

IMG_7196nb.JPG



IMG_7209nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18783 Time(s)

IMG_7209nb.JPG



IMG_7228nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18785 Time(s)

IMG_7228nb.JPG



IMG_7251nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18812 Time(s)

IMG_7251nb.JPG



IMG_7268nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18806 Time(s)

IMG_7268nb.JPG



IMG_7278nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18781 Time(s)

IMG_7278nb.JPG



IMG_7239nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 30x49x29mm, xl=9x4mm
 Description:
 Viewed:  18800 Time(s)

IMG_7239nb.JPG


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Fiebre Verde




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PostPosted: Aug 18, 2015 08:48    Post subject: Re: Collection of Fiebre Verde - Muzo with doubly terminated quartz (#568)  

Doubly terminated quartz are not commonly seen in the Colombian emerald belts.
Note that the beryl crystal is also terminated.

The little story behind this specimen is pretty common.
The dealer had a small lot of high quality thumbnail specimens which he had on deposit from a comisionista (Local name for the emerald brokers in Colombia - owners rarely sell directly their goods).
Even after buying the lot, I could never get hold of the comisionista's name and even less the owner's name...
Sources are jealously protected specially in the small market of Bogota - nothing really surprising here.
Makes the hunt a bit more challenging (and pricey).



IMG_8749nb.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl=9mm Quartz=13mm
 Description:
 Viewed:  18734 Time(s)

IMG_8749nb.JPG



IMG_8634nb.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl=9mm Quartz=13mm
 Description:
 Viewed:  18739 Time(s)

IMG_8634nb.JPG



IMG_8690nb.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl=9mm Quartz=13mm
 Description:
 Viewed:  18741 Time(s)

IMG_8690nb.JPG



IMG_8716nb.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl=9mm Quartz=13mm
 Description:
 Viewed:  18722 Time(s)

IMG_8716nb.JPG



IMG_8648nb.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl=9mm Quartz=13mm
 Description:
 Viewed:  18741 Time(s)

IMG_8648nb.JPG


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Fiebre Verde




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PostPosted: Aug 26, 2015 14:28    Post subject: Re: Collection of Fiebre Verde - Muzo (#561)  

Very likely from La Pava which is the westernmost mine of the Muzo mining district.
Host rock is black shale.



IMG_7555nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x49x45mm, xl=8x6mm
 Description:
 Viewed:  18620 Time(s)

IMG_7555nb.JPG



IMG_7592nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x49x45mm, xl=8x6mm
 Description:
 Viewed:  18614 Time(s)

IMG_7592nb.JPG



IMG_7632nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x49x45mm, xl=8x6mm
 Description:
 Viewed:  18575 Time(s)

IMG_7632nb.JPG


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Fiebre Verde




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PostPosted: Aug 28, 2015 14:26    Post subject: Re: Collection of Fiebre Verde - Chivor with ??? (#569)  

This Chivor specimen is very likely from San Gregorio mine.

I have seen the black opaque crystal with sharp edges featured in the last image on several Chivor specimens but can't figure out what it is. A Dolomite rhomb?

Host rock is a crumbly grey shale.



IMG_8803nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
 Viewed:  18506 Time(s)

IMG_8803nb.JPG



IMG_8815nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
 Viewed:  18498 Time(s)

IMG_8815nb.JPG



IMG_8881nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
 Viewed:  18519 Time(s)

IMG_8881nb.JPG



IMG_8837nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
 Viewed:  18523 Time(s)

IMG_8837nb.JPG



IMG_8862nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
 Viewed:  18560 Time(s)

IMG_8862nb.JPG



IMG_8927nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x14x21mm, xl=7mm
 Description:
Dolomite rhomb?
 Viewed:  18511 Time(s)

IMG_8927nb.JPG


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Fiebre Verde




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PostPosted: Aug 30, 2015 10:22    Post subject: Re: Collection of Fiebre Verde - Coscuez (#570)  

Another little aggregate from Coscuez.
No host rock.



IMG_9018nb.JPG
 Mineral: Beryl (variety emerald)
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: xls=12mm (aggregate)
 Description:
 Viewed:  18420 Time(s)

IMG_9018nb.JPG



IMG_9024nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl xls=12mm (aggregate) & 9mm
 Description:
 Viewed:  18424 Time(s)

IMG_9024nb.JPG



IMG_9055nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl xls=12mm (aggregate) & 9mm
 Description:
 Viewed:  18423 Time(s)

IMG_9055nb.JPG



IMG_9039nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Beryl xls=12mm (aggregate) & 9mm
 Description:
Calcite with an unusual crystallization for the locality.
 Viewed:  18431 Time(s)

IMG_9039nb.JPG


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Fiebre Verde




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PostPosted: Sep 05, 2015 03:59    Post subject: Re: Collection of Fiebre Verde - Chivor (#571)  

Host rock is gray shale.


IMG_9099nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18263 Time(s)

IMG_9099nb.JPG



IMG_9192nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18372 Time(s)

IMG_9192nb.JPG



IMG_9198nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18246 Time(s)

IMG_9198nb.JPG



IMG_9171nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18272 Time(s)

IMG_9171nb.JPG



IMG_9282nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18274 Time(s)

IMG_9282nb.JPG



IMG_9264nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: largest xl=11mm
 Description:
 Viewed:  18250 Time(s)

IMG_9264nb.JPG


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Fiebre Verde




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PostPosted: Sep 09, 2015 15:01    Post subject: Re: Collection of Fiebre Verde - La Pita (#559)  

This aggregate was sold to me as from Chivor but the vivid grass-green coloration makes me think that it's actually from the La Pita mining district.

Out of the three chromophoric elements (V, Cr, Fe) of natural emeralds, only vanadium and chromium are found in significant concentration in Colombian emeralds.
Various studies have shown that the ratio of V/Cr is much higher in the La Pita emeralds than in any of the other Colombian districts.
The high concentration of vanadium versus chromium is responsible for the grass-green coloration of the La Pita emeralds.



IMG_7287nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 47x24x34mm
 Description:
 Viewed:  18095 Time(s)

IMG_7287nb.JPG



IMG_7303nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 47x24x34mm
 Description:
 Viewed:  18091 Time(s)

IMG_7303nb.JPG



IMG_7319nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 47x24x34mm
 Description:
 Viewed:  18101 Time(s)

IMG_7319nb.JPG


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Fiebre Verde




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PostPosted: Sep 21, 2015 13:53    Post subject: Re: Collection of Fiebre Verde - Cunas (#567)  

A Cunas specimen with a doubly terminated beryl crystal.
This locality has been continuously producing spectacular specimens over the past 12-13 years.
Not sure about the smoked crystals contained in the vug (2 last pictures). Quartz?



IMG_8239nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
 Viewed:  17910 Time(s)

IMG_8239nb.JPG



IMG_8484nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
 Viewed:  17918 Time(s)

IMG_8484nb.JPG



IMG_8262nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
 Viewed:  17932 Time(s)

IMG_8262nb.JPG



IMG_8353nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
Contacted termination.
 Viewed:  17929 Time(s)

IMG_8353nb.JPG



IMG_8528nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
Smoked quartz vug??
 Viewed:  17905 Time(s)

IMG_8528nb.JPG



IMG_8428nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 31x21x20mm, xl=16x4mm
 Description:
Smoked quartz vug??
 Viewed:  17961 Time(s)

IMG_8428nb.JPG


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Jordi Fabre
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PostPosted: Sep 21, 2015 15:32    Post subject: Re: Collection of Fiebre Verde - Cunas (#567)  

In https://www.mineral-forum.com/message-board/viewtopic.php?p=46858#46858 Fiebre Verde wrote:
Smoked quartz vug?? -> https://www.mineral-forum.com/message-board/download.php?id=60926


It seems Calcite to me (with inclusions)
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Fiebre Verde




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PostPosted: Sep 21, 2015 15:49    Post subject: Re: Collection of Fiebre Verde - Cunas (#567)  

Jordi Fabre wrote:
In https://www.mineral-forum.com/message-board/viewtopic.php?p=46858#46858 Fiebre Verde wrote:
Smoked quartz vug?? -> https://www.mineral-forum.com/message-board/download.php?id=60926


It seems Calcite to me (with inclusions)


Agree, calcite seems a more reasonable guess Jordi.
Never seen specimens with quartz vugs in the emerald districts.
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PostPosted: Dec 12, 2015 15:46    Post subject: Re: Collection of Fiebre Verde - Calcite with deep striations - La Pita (#541)  

Calcite crystals show deep striations.
Striated calcite is not uncommon in the La Pita district but this specimen exhibits a pattern which looks more like a series of ridges than ordinary striation.
I would love to hear an explanation on this - growth pattern? else?



IMG_5774nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 7cm across
 Description:
 Viewed:  16991 Time(s)

IMG_5774nb.JPG



IMG_5780nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 7cm across
 Description:
 Viewed:  17006 Time(s)

IMG_5780nb.JPG



IMG_5798nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 7cm across
 Description:
 Viewed:  17002 Time(s)

IMG_5798nb.JPG



IMG_5853nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 7cm across
 Description:
 Viewed:  16991 Time(s)

IMG_5853nb.JPG



IMG_5857nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 7cm across
 Description:
 Viewed:  17006 Time(s)

IMG_5857nb.JPG


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yowanni




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PostPosted: Dec 16, 2015 02:47    Post subject: Re: Collection of Fiebre Verde  

Hello Fiebre Verde,
It seems like an etching-dissolution pattern.
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Fiebre Verde




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PostPosted: Dec 16, 2015 15:45    Post subject: Re: Collection of Fiebre Verde  

yowanni wrote:
Hello Fiebre Verde,
It seems like an etching-dissolution pattern.


Thanks for answering Yowanni!

I ruled out this possibility because of the geometric regularity of the patterns observed on all faces of the calcite crystals.

I am interested to know if anyone here has already came across this type of patterns.

Gérard
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Jordi Fabre
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PostPosted: Dec 16, 2015 17:02    Post subject: Re: Collection of Fiebre Verde  

It looks anthropogenic to me...
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Ricardo Melendez




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PostPosted: Dec 16, 2015 17:47    Post subject: Re: Collection of Fiebre Verde  

I have seen calcites with that pattern after hydrochloric acid treatment.

very likely in your specimen.
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minsur




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PostPosted: Dec 16, 2015 18:07    Post subject: Re: Collection of Fiebre Verde  

A combined process to form "interesting looking crystals" out of damaged or cleaved Calcite???
First a scratch job with a file (pocket-knife-file?) and then a short acid bath?
So much work to manufacture an average specimen, at best?

More questions than answers...
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Fiebre Verde




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PostPosted: Dec 17, 2015 01:31    Post subject: Re: Collection of Fiebre Verde  

Thanks Minsur, Jordi & Rocardo. Seems like we have a consensus on the origin of these strange patterns!

This does not really come as a surprise to me as emerald sculptures and carvings is an important business in Bogota. Usually the artistic emphasis is focused on the low-grade emerald material and not the surrounding crystals!

Can't remember how this specimen ended up in my collection.

Gérard
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Fiebre Verde




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PostPosted: Dec 20, 2015 15:47    Post subject: Re: Collection of Fiebre Verde - Chivor (#573)  

A recent find from the Chivor district.
Pyrite is partly oxidized.



IMG_9392nb.JPG
 Mineral: Beryl (Var. Emerald), Dolomite, Pyrite
 Locality:
Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 63x45x15mm, main xl=10mm
 Description:
 Viewed:  16512 Time(s)

IMG_9392nb.JPG



IMG_9417nb.JPG
 Mineral: Beryl (Var. Emerald), Dolomite, Pyrite
 Locality:
Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 63x45x15mm, main xl=10mm
 Description:
 Viewed:  16449 Time(s)

IMG_9417nb.JPG


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