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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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 Posted: Jun 01, 2016 02:42 Post subject: Re: Collection of Fiebre Verde - Coscuez (#588) |
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| Tobi wrote: | | Fiebre Verde wrote: | | From clarity to opacity [...] still an interesting specimen [...] |
Sure, gemminess is an important factor when judging the quality of certain minerals, if not THE factor when it's about gem minerals like beryl. From a jeweler's point of view, opaque specimens of emerald may seem worthless, but as a mineral collector, I think there are also wonderful specimens of that species that are opaque. When undamaged and in a nice shape, showing a vivid green colour, and combined with some contrasting matrix, an emerald doesn't need to be gemmy to look good. Gemminess is a bonus and increases the value enormously, but even opaque crystals can result in very desirable mineral specimens.
Just my humble opinion :-)
Tobi |
Tobi, your humble opinion matters a lot to us :-) :-)
More seriously, I embraced this mindset from day 1 when I started collecting.
Aesthetic value vs. market value is an endless debate but unless you build a collection as if you would buy an index fund, I don't see the point of discarding crystals just because they don't comply with the jewelry industry standards.
And this is why (among other obvious reasons such as scarcity and budget) I look primarily for attractive association specimens.
What really strikes me as I keep collecting is the infinite variations of this beautiful mineral.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jun 02, 2016 16:43 Post subject: Re: Collection of Fiebre Verde - Chivor (#392) |
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Another specimen part of the 2010 find at the Acuario Mine in Chivor that exhibited those pencil-like termination crystals.
Lustrous/iridescent dolomite matrix coated with well-crystallized intergrown pyrite octahedrons.
| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia |  |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71063 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71084 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71044 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71024 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
70973 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71044 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71019 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71039 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71049 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
70979 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71036 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, El Acuario Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 68x66x35mm, xls up to 10mm |
| Description: |
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| Viewed: |
71011 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jun 26, 2016 10:30 Post subject: Re: Collection of Fiebre Verde - La Pita (#398) |
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Sainte-Marie is not even over yet and already the countdown has started – only 361 days left before the next show.
But how to fill the void in the meantime?
Maybe I could post more beryl specimens - here we go.
In this small La Pita specimen, the beryl crystal is contacted with calcite and dolomite.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 32x28x22mm, xl=11mm |
| Description: |
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| Viewed: |
70783 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 32x28x22mm, xl=11mm |
| Description: |
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| Viewed: |
70791 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 32x28x22mm, xl=11mm |
| Description: |
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| Viewed: |
70794 Time(s) |
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Philippe Durand
Joined: 10 May 2016
Posts: 653
Location: Normandie
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| Posted: Jun 26, 2016 14:13 Post subject: Re: Collection of Fiebre Verde |
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| I love Pyrite, but when it is adorned with Emerald , it is fabulous.
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jun 27, 2016 08:43 Post subject: Re: Collection of Fiebre Verde |
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| Philippe Durand wrote: | | I love Pyrite, but when it is adorned with Emerald , it is fabulous. |
Thanks for sharing your enthusiasm Philippe!
Agree - crystallized pyrite would have added another dimension to this specimen.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jun 29, 2016 08:20 Post subject: Re: Collection of Fiebre Verde - Chivor (#595) |
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Albite is almost entirely oxidized in this specimen.
Host rock is a bedded grey limestone which is a characteristic feature of the Chivor area.
| Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 50x67x50mm, main xl=18mm |
| Description: |
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| Viewed: |
70649 Time(s) |
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| Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 50x67x50mm, main xl=18mm |
| Description: |
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| Viewed: |
70653 Time(s) |
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| Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 50x67x50mm, main xl=18mm |
| Description: |
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| Viewed: |
70619 Time(s) |
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| Mineral: | Beryl (variety emerald), Albite (variety cleavelandite), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 50x67x50mm, main xl=18mm |
| Description: |
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| Viewed: |
70664 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jun 30, 2016 16:04 Post subject: Re: Collection of Fiebre Verde - Muzo (#596) |
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Corroded crystal on a black shale host rock.
| Mineral: | Beryl (variety emerald), Pyrite |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 70x48x23mm, xl=12x11mm |
| Description: |
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| Viewed: |
70599 Time(s) |
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| Mineral: | Beryl (variety emerald), Pyrite |
| Locality: | | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 70x48x23mm, xl=12x11mm |
| Description: |
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| Viewed: |
70541 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 02, 2016 08:30 Post subject: Re: Collection of Fiebre Verde - Chivor (#597) |
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One of those small beryl crystals that you could spot a mile away (well, I do...).
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 45x36x29mm, xl=4mm |
| Description: |
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| Viewed: |
70520 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 45x36x29mm, xl=4mm |
| Description: |
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| Viewed: |
70485 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 45x36x29mm, xl=4mm |
| Description: |
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| Viewed: |
70516 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 45x36x29mm, xl=4mm |
| Description: |
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| Viewed: |
70491 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 45x36x29mm, xl=4mm |
| Description: |
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| Viewed: |
70502 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 06, 2016 06:01 Post subject: Re: Collection of Fiebre Verde - Chivor (#598) |
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Another specimen from Chivor.
Pyrite, iridescent calcite, dolomite, set in a brecciated matrix.
| Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 33x37x40mm, xl=8mm |
| Description: |
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| Viewed: |
70363 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 33x37x40mm, xl=8mm |
| Description: |
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| Viewed: |
70290 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 33x37x40mm, xl=8mm |
| Description: |
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| Viewed: |
70286 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite, Pyrite |
| Locality: | | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 33x37x40mm, xl=8mm |
| Description: |
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| Viewed: |
70334 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 09, 2016 05:17 Post subject: Re: Collection of Fiebre Verde - Chivor (#164) |
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Double terminated crystal.
The close-up images show that the main beryl crystal is partly hollow.on one end
There seem to be a consensus that hollow crystals result from a rapid growth mechanism e.g. not from dissolution or etching.
Emeralds with hollow tubes all the way through the crystal can be found in the Chivor district.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 35x27x12mm, main xl=11mm |
| Description: |
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| Viewed: |
70123 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 35x27x12mm, main xl=11mm |
| Description: |
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| Viewed: |
70230 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 35x27x12mm, main xl=11mm |
| Description: |
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| Viewed: |
70259 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 35x27x12mm, main xl=11mm |
| Description: |
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| Viewed: |
70122 Time(s) |
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| Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
| Locality: | | Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 35x27x12mm, main xl=11mm |
| Description: |
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| Viewed: |
70156 Time(s) |
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Philippe Durand
Joined: 10 May 2016
Posts: 653
Location: Normandie
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| Posted: Jul 09, 2016 06:10 Post subject: Re: Collection of Fiebre Verde |
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| excellent miniature
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 09, 2016 06:52 Post subject: Re: Collection of Fiebre Verde |
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| Philippe Durand wrote: | | excellent miniature |
Thank you Philippe!
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 10, 2016 13:59 Post subject: Re: Collection of Fiebre Verde - Cunas (#371) |
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The beryl crystal exhibits some iridescence on one of the faces.
Host rock is black shale.
| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x58x47mm, xl=9mm |
| Description: |
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| Viewed: |
71590 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x58x47mm, xl=9mm |
| Description: |
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| Viewed: |
71602 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x58x47mm, xl=9mm |
| Description: |
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| Viewed: |
71561 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x58x47mm, xl=9mm |
| Description: |
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| Viewed: |
71551 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite, Dolomite |
| Locality: | | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 38x58x47mm, xl=9mm |
| Description: |
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| Viewed: |
71614 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 11, 2016 15:17 Post subject: Re: Collection of Fiebre Verde - Muzo (#602) |
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An aggregate from Muzo.
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: | 55x53x29mm, aggregate=21x27mm |
| Description: |
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| Viewed: |
71497 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: | 55x53x29mm, aggregate=21x27mm |
| Description: |
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| Viewed: |
71477 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: | 55x53x29mm, aggregate=21x27mm |
| Description: |
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| Viewed: |
71435 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: | 55x53x29mm, aggregate=21x27mm |
| Description: |
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| Viewed: |
71472 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
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| Posted: Jul 13, 2016 15:34 Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#513) |
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Most crystals of this aggregate are terminated.
Typical Peñas Blancas creamy calcite on iron-stained coarse-grained black shale matrix.
A small white patch of calcium carbonate can be noticed in the middle of the specimen (upper center of the first image)..
Although quartz is abundant in Peñas Blancas, the specimen has no quartz at all.
Those images do not do justice to how attractive these beryl crystals are.
| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 70x70x45mm |
| Description: |
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| Viewed: |
71356 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 70x70x45mm |
| Description: |
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| Viewed: |
71287 Time(s) |
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| Mineral: | Beryl (variety emerald), Calcite |
| Locality: | | Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia | |
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| Dimensions: | 70x70x45mm |
| Description: |
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| Viewed: |
71340 Time(s) |
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