View previous topic :: View next topic |
Author |
Message |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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".
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) |

|
|
|
Back to top |
|
 |
Josele

Joined: 10 Apr 2012
Posts: 410
Location: Tarifa, Spain



|
Posted: 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 |
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: Sep 29, 2014 06:04 Post subject: Re: Collection of Fiebre Verde |
|
|
Thanks Josele! More to come...
Gérard
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

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

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

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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).
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



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

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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.
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) |

|
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) |

|
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) |

|
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) |

|
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) |

|
|
|
Back to top |
|
 |
Fiebre Verde

Joined: 11 Sep 2013
Posts: 943
Location: Paris Area



|
Posted: 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!
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) |

|
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) |

|
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) |

|
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) |

|
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: |
95504 Time(s) |

|
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) |

|
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) |

|
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) |

|
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: |
95569 Time(s) |

|
|
|
Back to top |
|
 |
|