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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Sep 06, 2018 15:28 Post subject: Re: Collection of Fiebre Verde - La Pita (#343) |
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Group of 10+ grass green crystals.
Host rock is a bedded limestone.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | 59x40x41mm, largest xl=20mm |
Description: |
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81601 Time(s) |

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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Sep 15, 2018 15:23 Post subject: Re: Collection of Fiebre Verde - Muzo (#703) |
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Beryl crystal partly encapsulated in a calcite shell.
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: | 45x47x32mm, xl=15mm |
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81444 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: | 45x47x32mm, xl=15mm |
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81483 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: | 45x47x32mm, xl=15mm |
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81459 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: | 45x47x32mm, xl=15mm |
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81429 Time(s) |

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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Sep 22, 2018 15:56 Post subject: Re: Collection of Fiebre Verde - Muzo (#707) |
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Small beryl crystal has grown on top of the large one.
Mineral: | Beryl (variety emerald) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | xl=5.5x7x4.5mm |
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81292 Time(s) |

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Mineral: | Beryl (variety emerald) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | xl=5.5x7x4.5mm |
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81273 Time(s) |

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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 03, 2018 15:11 Post subject: Re: Collection of Fiebre Verde - Chivor (#710] |
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Beryl crystal has a complex pyramidal termination.
Mineral: | Beryl (variety emerald) |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | 4x10mm |
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81026 Time(s) |

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Mineral: | Beryl (variety emerald) |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | 4x10mm |
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81016 Time(s) |

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Tobi
Site Admin

Joined: 07 Apr 2009
Posts: 4248
Location: Germany



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Posted: Oct 07, 2018 04:09 Post subject: Re: Collection of Fiebre Verde |
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Just too good to be true! Especially the one with the "baby" crystal attached to its top - what a beauty!
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 07, 2018 09:34 Post subject: Re: Collection of Fiebre Verde |
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Tobi wrote: | Just too good to be true! Especially the one with the "baby" crystal attached to its top - what a beauty! |
Thanks Tobi!
These small crystals are sometime overlooked by dealers trying to go for the big sale.
The "big sale" wasn't that big at the end and I walked out with a lot of 4 small crystals as a bonus.
Gérard
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 16, 2018 15:52 Post subject: Re: Collection of Fiebre Verde - Chivor (#688] |
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Two intergrown crystals from Chivor.
Very likely from the historic mine of Palo Arañado.
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: | both crystals are 15mm long |
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66648 Time(s) |

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Michael Shaw
Site Admin

Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma



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Posted: Oct 17, 2018 09:39 Post subject: Re: Collection of Fiebre Verde - Chivor (#688] |
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Fiebre Verde wrote: | Two intergrown crystals from Chivor.
Very likely from the historic mine of Palo Arañado. |
Very nice Gérard.
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 17, 2018 10:53 Post subject: Re: Collection of Fiebre Verde - Chivor (#688] |
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crosstimber wrote: | Fiebre Verde wrote: | Two intergrown crystals from Chivor.
Very likely from the historic mine of Palo Arañado. |
Very nice Gérard. |
Thanks Michael!
These small specimens are sometimes overlooked in the Bogota market.
With a bit of patience and time, you can find some real treasures at a very reasonable price.
Gérard
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 18, 2018 16:33 Post subject: Re: Collection of Fiebre Verde - Quartz with unknown fibrous inclusions (#8820] |
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Colorless quartz cluster.
Terminations are heavily included with a vivid yellowish-orange material.
Crystals are double-terminated.
This material is from the early 2000s, from an unknown Colombian locality, either in the state of Santander or in Boyacá.
The dealer I got this specimen from believes that the yellowish-orange fibrous inclusions is Humboldtine.
In a recent post, John Rakovan mentioned that these inclusions were being analyzed by his team of the Miami University.
Eagerly waiting for an update on the nature of these inclusions :-)
Mineral: | Quartz |
Locality: | Colombia |  |
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Dimensions: | 13x46x8mm |
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66440 Time(s) |

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Mineral: | Quartz |
Locality: | Colombia |  |
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Dimensions: | 13x46x8mm |
Description: |
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Viewed: |
66425 Time(s) |

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Bergur_E_Sigurdarson

Joined: 21 Dec 2017
Posts: 148
Location: Paipa, Colombia



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Posted: Oct 18, 2018 17:59 Post subject: Re: Collection of Fiebre Verde |
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I have seen similar quartz in Colombia... usually told it's from Santander... whether correct or not.
But the ones I have seen aren't usually vivid yellow... the texture of the "fibers" or tubes is the same... but colour ranges from almost white to oxidized brown (similar to the dirt in btw many examples I have seen and bought a few) .... I had always assumed they were just "micro-tubes" getting filled with rust/dirt.
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Philippe Durand
Joined: 10 May 2016
Posts: 653
Location: Normandie



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Posted: Oct 19, 2018 10:16 Post subject: Re: Collection of Fiebre Verde - Chivor (#688] |
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Fiebre Verde wrote: | Two intergrown crystals from Chivor.
Very likely from the historic mine of Palo Arañado. |
wouah ! Fabulous thumbnail
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 19, 2018 12:14 Post subject: Re: Collection of Fiebre Verde - Chivor (#688] |
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Philippe Durand wrote: | Fiebre Verde wrote: | Two intergrown crystals from Chivor.
Very likely from the historic mine of Palo Arañado. |
wouah ! Fabulous thumbnail |
Thanks for your appreciation Philippe!
Mother nature has certainly done a good job here.
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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 21, 2018 13:50 Post subject: Re: Collection of Fiebre Verde - Gachalá (#713] |
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The Matecaña mine made the headlines 20 years ago after a pocket full of gastropods was discovered.
These were not ordinary fossils - their shells had been “pseudomorphosed” to emerald following the classic process of “mineralization by dissolution/substitution”
Never had a chance to have an emerald gastropod in my collection but I was lucky to get my first Matecaña specimen only a few days ago.
This druse of deep green crystals arranged in an “en echelon” form looks like a vein crossing the black shale.
But the unique feature of this vein is that outside the emerald, no other mineralization is seen. Contrast of the deep green color with the black shale is spectacular, much better in person.
I was told by a miner who works in the Gachalá area that the black shale found in Matecaña is extremely hard – probably due to the high concentration of silica.
Mineral: | Beryl (variety emerald) |
Locality: | Gachalá mining district, Matecaña Mine, Municipio Gachalá, Eastern Emerald Belt, Cundinamarca Department, Colombia |  |
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Dimensions: | 90x57x49mm |
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Viewed: |
66282 Time(s) |

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Mineral: | Beryl (variety emerald) |
Locality: | Gachalá mining district, Matecaña Mine, Municipio Gachalá, Eastern Emerald Belt, Cundinamarca Department, Colombia |  |
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Dimensions: | 90x57x49mm |
Description: |
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Viewed: |
66292 Time(s) |

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Mineral: | Beryl (variety emerald) |
Locality: | Gachalá mining district, Matecaña Mine, Municipio Gachalá, Eastern Emerald Belt, Cundinamarca Department, Colombia |  |
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Dimensions: | 90x57x49mm |
Description: |
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Viewed: |
66327 Time(s) |

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Mineral: | Beryl (variety emerald) |
Locality: | Gachalá mining district, Matecaña Mine, Municipio Gachalá, Eastern Emerald Belt, Cundinamarca Department, Colombia |  |
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Dimensions: | 90x57x49mm |
Description: |
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Viewed: |
66297 Time(s) |

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Fiebre Verde

Joined: 11 Sep 2013
Posts: 944
Location: Paris Area



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Posted: Oct 29, 2018 16:34 Post subject: Re: Collection of Fiebre Verde - Chivor (#711) |
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Hollow emerald, only found in the Chivor district.
It is admitted that crystals with a central hollow result from rapid growth.
Mineral: | Beryl (variety emerald), Quartz |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | xl=11.5mm x 12mm |
Description: |
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66130 Time(s) |

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Mineral: | Beryl (variety emerald), Quartz |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia |  |
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Dimensions: | xl=11.5mm x 12mm |
Description: |
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Viewed: |
66133 Time(s) |

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