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Collection of Fiebre Verde
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Fiebre Verde




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PostPosted: Sep 28, 2014 17:19    Post subject: Collection of Fiebre Verde  

Let's start this long Colombian journey with a typical specimen from Peñas Blancas.

Host rock is brecciated and matrix is covered by large areas of iron-stained and creamy calcite.
Emeralds are slightly bluish green and possess the typical velvety appearance of this locality. Some of the crystals have pits and cavities which is another characteristic of Peñas Blancas.
This specimen shows 2 distinct areas: The area where the emerald is fully crystallized and the area where it is not. The latter material is locally called "moralla".



IMG_4897.JPG
 Mineral: Beryl (variety emerald) with Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 10x9x4.5cm
 Description:
Emerald (Crystals up to 1cm long), iron-stained and creamy calcite.
 Viewed:  96691 Time(s)

IMG_4897.JPG


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Josele




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PostPosted: Sep 28, 2014 18:25    Post subject: Re: Collection of Fiebre Verde  

Nice start, a good piece, proper photo, detailed comments, let's go!
Thanks for sharing.

_________________
Josele
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Fiebre Verde




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PostPosted: Sep 29, 2014 06:04    Post subject: Re: Collection of Fiebre Verde  

Thanks Josele! More to come...
Gérard
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Fiebre Verde




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PostPosted: Sep 29, 2014 09:33    Post subject: Re: Collection of Fiebre Verde  

Since the Peñas Blancas locality is a bit overlooked by collectors, I thought I could post another interesting specimen.
Unlike the previous specimen, the main crystal has a very light bluish-green tone.
The 2cm long intergrown crystals give the illusion that it's one bi-terminated emerald.



IMG_3378.JPG
 Mineral: Beryl (variety emerald) with Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 5x5x2cm
 Description:
Intergrown emeralds and calcite (grey, creamy and iron-stained)
 Viewed:  96560 Time(s)

IMG_3378.JPG



IMG_3386.JPG
 Mineral: Beryl (variety emerald) with Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail
 Description:
Intergrown emeralds
 Viewed:  96626 Time(s)

IMG_3386.JPG



IMG_3388.JPG
 Mineral: Beryl (variety emerald) with Calcite
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail
 Description:
Intergrown emeralds
 Viewed:  96513 Time(s)

IMG_3388.JPG


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Fiebre Verde




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PostPosted: Sep 29, 2014 10:47    Post subject: Re: Collection of Fiebre Verde  

This is a veinlet from the La Pita mining area I managed to smuggle a few years back.
The host rock is a black carboniferous shale, typical from the locality.
The main vein should have been close by but it was not for sale...
Fracture was not wide enough to let the emerald/pyrite crystals grow.



IMG_3370.JPG
 Mineral: Beryl (variety emerald) with Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 18x10x8cm
 Description:
Fractured carboniferous black shale
 Viewed:  96523 Time(s)

IMG_3370.JPG



IMG_3371.JPG
 Mineral: Beryl (variety emerald) with Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 18x10x8cm
 Description:
Emerald/Pyrite mineralization within the fracture
 Viewed:  96447 Time(s)

IMG_3371.JPG



IMG_3372.JPG
 Mineral: Beryl (variety emerald) with Pyrite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV 12cm
 Description:
Emerald/Pyrite mineralization within the fracture
 Viewed:  96493 Time(s)

IMG_3372.JPG


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Fiebre Verde




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PostPosted: Sep 29, 2014 16:10    Post subject: Re: Collection of Fiebre Verde  

La Pava is one of the many mines of the famous Muzo mining district.
Muzo emeralds are well-known for their beautiful dark green color in association with crystallized pyrite.
This specimen features a light yellowish-green emerald and ... no pyrite - just white calcite and the host rock (black shale).
Note the contact area on the basal pinacoid termination (last photo).



IMG_4931.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 38x24x33mm
 Description:
Emerald is about 8mm high
 Viewed:  96401 Time(s)

IMG_4931.JPG



IMG_3120.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 38x24x33mm
 Description:
Detail - Emerald is about 8mm high
 Viewed:  96544 Time(s)

IMG_3120.JPG



IMG_4924.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 38x24x33mm
 Description:
Detail - Note the contact area on the flat termination.
 Viewed:  96512 Time(s)

IMG_4924.JPG


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Fiebre Verde




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PostPosted: Sep 29, 2014 17:17    Post subject: Re: Collection of Fiebre Verde  

Another specimen from La Pava with a lighter bluish-green crystal than the previous one. This almost flawless emerald has a pyramidal termination and comes with white calcite - no host rock. It has a beautiful vitreous luster which is typical of some pockets of this mine.


IMG_4929.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x34x38mm
 Description:
Emerald is 1cm high
 Viewed:  96340 Time(s)

IMG_4929.JPG



IMG_4938.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x34x38mm
 Description:
Detail - Emerald is 1cm high
 Viewed:  96346 Time(s)

IMG_4938.JPG



IMG_4934.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, La Pava Mine, Quípama, Municipio Muzo, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x34x38mm
 Description:
Detail - Emerald is 1cm high
 Viewed:  96458 Time(s)

IMG_4934.JPG


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Fiebre Verde




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PostPosted: Sep 30, 2014 18:24    Post subject: Re: Collection of Fiebre Verde  

A classic setting for Colombian specimens - an emerald crystal perched on a white calcite rhomb/scalenohedron.
First photo was taken using LED lights.
The 2 last photos were taken under daylight. Yellow is clearly the secondary color which is a characteristic of Muzo emeralds.
The emerald termination is not flat and looks like a contact area.



IMG_4975.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Emerald 18mm / Calcite 24mm
 Description:
Photo taken using LED lights
 Viewed:  96324 Time(s)

IMG_4975.JPG



IMG_0079.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Emerald 18mm / Calcite 24mm
 Description:
Photo taken under daylight
 Viewed:  96349 Time(s)

IMG_0079.JPG



IMG_0065.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Emerald 18mm / Calcite 24mm
 Description:
Photo taken under daylight
 Viewed:  96246 Time(s)

IMG_0065.JPG


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Fiebre Verde




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PostPosted: Oct 01, 2014 16:32    Post subject: Re: Collection of Fiebre Verde  

A classic association from a classic locality. Emerald & Quartz from Muzo mining district.
There are 2 emerald intergrown crystals plus a smaller one on the side.



IMG_4985.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 41x26mm; Intergrown emerald crystals=1cm
 Description:
 Viewed:  96382 Time(s)

IMG_4985.JPG



IMG_4991.JPG
 Mineral: Beryl (variety emerald), Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 41x26mm; Intergrown emerald crystals=1cm
 Description:
 Viewed:  96225 Time(s)

IMG_4991.JPG


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Fiebre Verde




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PostPosted: Oct 02, 2014 15:51    Post subject: Re: Collection of Fiebre Verde  

This specimen is interesting because the emerald crystallization has an occurrence of aggregate type formations with multiple individual terminations, specially in the central part. The emerald formation is literally crisscrossing the milky calcite matrix. A few patches of black shale host rock are also visible.
These aggregate type formations are very frequent in Coscuez.



IMG_5025.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 16x8x7cm
 Description:
 Viewed:  95898 Time(s)

IMG_5025.JPG



IMG_5004.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 16x8x7cm
 Description:
 Viewed:  95983 Time(s)

IMG_5004.JPG



IMG_5039.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
 Viewed:  96024 Time(s)

IMG_5039.JPG


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Fiebre Verde




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PostPosted: Oct 03, 2014 10:00    Post subject: Re: Collection of Fiebre Verde  

Another unusual specimen from the Cunas mine in La Pita mining district.
Emerald material is low quality (moralla grade) with very little crystallization (see last close up image).
The emerald aggregate shows a clear bedding pattern and has been fractured perpendicularly in various places. Some fractures were filled up by white calcite.
The minerals in the background are grey calcite - no host rock.



IMG_5045.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 12x11x5cm
 Description:
 Viewed:  95800 Time(s)

IMG_5045.JPG



IMG_5046.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 12x11x5cm
 Description:
 Viewed:  95829 Time(s)

IMG_5046.JPG



IMG_5059.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 12x11x5cm
 Description:
 Viewed:  95905 Time(s)

IMG_5059.JPG



IMG_5052.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=7cm
 Description:
 Viewed:  95915 Time(s)

IMG_5052.JPG



IMG_5061.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3cm
 Description:
 Viewed:  95871 Time(s)

IMG_5061.JPG


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PostPosted: Oct 03, 2014 11:56    Post subject: Re: Collection of Fiebre Verde - La Pita  

A classic specimen from the La Pita mining district with dark grey calcite.


IMG_5067.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 44x32x39mm xl=9mm
 Description:
 Viewed:  95857 Time(s)

IMG_5067.JPG



IMG_3266.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=2.5cm
 Description:
 Viewed:  95887 Time(s)

IMG_3266.JPG


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PostPosted: Oct 03, 2014 16:15    Post subject: Re: Collection of Fiebre Verde - Coscuez  

This specimen from the Coscuez mining district comes with one single crystal with a complex termination combining flat basal pinacoid in the outside part and multiple individual terminations in the inside part (see last close ups)
Matrix is typical from this locality e.g. black shale in combination with grey calcite and a rust colored layer of iron oxide.



IMG_5084.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x65x60mm
 Description:
 Viewed:  95698 Time(s)

IMG_5084.JPG



IMG_5074.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
 Viewed:  95822 Time(s)

IMG_5074.JPG



IMG_3289.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=2.5cm
 Description:
 Viewed:  95776 Time(s)

IMG_3289.JPG



IMG_5077.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3cm
 Description:
 Viewed:  95736 Time(s)

IMG_5077.JPG



IMG_5081.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
 Viewed:  95831 Time(s)

IMG_5081.JPG


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PostPosted: Oct 04, 2014 14:51    Post subject: Re: Collection of Fiebre Verde - Coscuez  

Classic Coscuez specimen combining white and grey calcite on black shale host rock.
These sharply formed white scalenohedral crystals of calcite are also frequent in the neighboring La Pita mining district.



IMG_5092.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x75x75mm - main emerald xl=15mm
 Description:
 Viewed:  95629 Time(s)

IMG_5092.JPG



IMG_5156.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 95x75x75mm - main emerald xl=15mm
 Description:
 Viewed:  95610 Time(s)

IMG_5156.JPG



IMG_5109.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
 Viewed:  95587 Time(s)

IMG_5109.JPG



IMG_5118.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=3.5cm
 Description:
 Viewed:  95619 Time(s)

IMG_5118.JPG



IMG_5145.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
Note the crystallization patterns on the emerald termination.
 Viewed:  95648 Time(s)

IMG_5145.JPG


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Fiebre Verde




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PostPosted: Oct 06, 2014 15:33    Post subject: Re: Collection of Fiebre Verde - Coscuez  

Another beautiful specimen from Coscuez.
Emerald patches are scattered all around a milky-white calcite matrix.
Also fully crystallized translucent calcite aggregates are present in some areas.
But the most significant feature of this specimen is the occurrence of several emerald aggregates which is one the significant trademarks of Coscuez.
In this specimen they either take a step-like appearance or a tabular appearance.
That's the magic of Coscuez emeralds... when they are not sent for cutting!



IMG_5159.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 105x80x60mm
 Description:
 Viewed:  95484 Time(s)

IMG_5159.JPG



IMG_5233.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 105x80x60mm
 Description:
 Viewed:  95554 Time(s)

IMG_5233.JPG



IMG_5232.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 105x80x60mm
 Description:
Note the cluster pointing down on the left-hand side
 Viewed:  95531 Time(s)

IMG_5232.JPG



IMG_5230.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 105x80x60mm
 Description:
 Viewed:  95423 Time(s)

IMG_5230.JPG



IMG_5216.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=4cm
 Description:
Tabular aggregate
 Viewed:  95504 Time(s)

IMG_5216.JPG



IMG_5201.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=7cm
 Description:
Step-like aggregate.
Note the translucent calcite on the left of it.
 Viewed:  95536 Time(s)

IMG_5201.JPG



IMG_5198.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=6cm
 Description:
Spectacular tabular aggregate
 Viewed:  95543 Time(s)

IMG_5198.JPG



IMG_5184.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=6cm
 Description:
Same tabular aggregate as in the previous snapshot.
 Viewed:  95457 Time(s)

IMG_5184.JPG



IMG_5166.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: Detail - FOV=5cm
 Description:
Step-like aggregate
 Viewed:  95569 Time(s)

IMG_5166.JPG


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