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Collection of Fiebre Verde
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Tobi




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PostPosted: May 21, 2017 02:06    Post subject: Re: Collection of Fiebre Verde  

Though the emerald crystals are not gemmy and some of them have broken terminations, this specimen is very aesthetic, I like how the crystals are scattered on the piece and how the pyrite adds a contrast with a golden touch ;-)
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Fiebre Verde




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PostPosted: May 21, 2017 13:14    Post subject: Re: Collection of Fiebre Verde  

Tobi wrote:
Though the emerald crystals are not gemmy and some of them have broken terminations, this specimen is very aesthetic, I like how the crystals are scattered on the piece and how the pyrite adds a contrast with a golden touch ;-)

Glad to know you like this specimen Tobi!
Pyrite aggregates are more often found in the Chivor area than in the Western Belt (Muzo-Coscuez-La Pita).
In the Chivor area, El Oriente and El Acuario, which are just a few hundred meters apart, are the 2 mines where the most spectacular combinations of Emeralds and Pyrite aggregates are found.
I totally share your opinion – I love the aesthetics of this specimen despite the average quality of the beryls (actually the color is much nicer in person!).
But, as you said, what makes it attractive is the balance between the emeralds, the pyrite, and the patches of limonite across the entire piece.
Also, and that’s not a given, all the beryl crystals look pretty much alike color wise.

There is a little story behind this specimen.
It comes from an old find at… the emerald museum in Bogota!
After discussing with the owner of this private museum, I realized that he was actually willing to sell some of the specimens on display.
And this is how I managed to get some “museum pieces” at a very reasonable price.
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Fiebre Verde




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PostPosted: Jun 08, 2017 13:40    Post subject: Re: Collection of Fiebre Verde - La Marina (#6005)  

This specimen was self-collected by a friend in the La Marina mine last week.
La Marina is better known for its Euclase and pink Apatite.

La Marina also produces emerald in very small quantity.
Euclase mixes with Apatite but never with Emerald - sometime they are found just a few cm apart.



IMG_2284nb.JPG
 Mineral: Barite, Calcite
 Locality:
La Marina Mine, Municipio Pauna, Boyacá Department, Colombia
 Dimensions: 14x21x12mm
 Description:
 Viewed:  2881 Time(s)

IMG_2284nb.JPG



IMG_2189nb.JPG
 Mineral: Barite, Calcite
 Locality:
La Marina Mine, Municipio Pauna, Boyacá Department, Colombia
 Dimensions: 14x21x12mm
 Description:
 Viewed:  2882 Time(s)

IMG_2189nb.JPG



IMG_2207nb.JPG
 Mineral: Barite, Calcite
 Locality:
La Marina Mine, Municipio Pauna, Boyacá Department, Colombia
 Dimensions: 14x21x12mm
 Description:
Opposite side
 Viewed:  2880 Time(s)

IMG_2207nb.JPG


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Fiebre Verde




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PostPosted: Jun 09, 2017 16:41    Post subject: Re: Collection of Fiebre Verde - Lilac Blue Dolomite from Muzo (#6400)  

Blue Dolomite is not uncommon in both Emerald belts.
In the Eastern Belt (Piedra de Chulo), the blue dolomite takes the form of grey-blue flattened rhombohedral centimetric crystals.
In the Western Belt (Muzo and La Pita), it takes the form of irregular aggregates and has a very attractive lilac blue cast.

Host rock is a fine-grained black shale.



IMG_2310nb.JPG
 Mineral: Dolomite, Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 123x82x39mm
 Description:
 Viewed:  2807 Time(s)

IMG_2310nb.JPG



IMG_2332nb.JPG
 Mineral: Dolomite, Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 123x82x39mm
 Description:
 Viewed:  2805 Time(s)

IMG_2332nb.JPG



IMG_2340nb.JPG
 Mineral: Dolomite, Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 123x82x39mm
 Description:
Fibrous Calcite.
 Viewed:  2807 Time(s)

IMG_2340nb.JPG



IMG_2360nb.JPG
 Mineral: Dolomite, Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 123x82x39mm
 Description:
 Viewed:  2810 Time(s)

IMG_2360nb.JPG


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Tobi




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PostPosted: Jun 10, 2017 02:11    Post subject: Re: Collection of Fiebre Verde - Lilac Blue Dolomite from Muzo (#6400)  

Fiebre Verde wrote:
Blue Dolomite is not uncommon in both Emerald belts [...] In the Western Belt (Muzo and La Pita), it takes the form of irregular aggregates and has a very attractive lilac blue cast [...]
Fiebre azul now instead of fiebre verde? ;-)
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Fiebre Verde




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PostPosted: Jun 11, 2017 09:03    Post subject: Re: Collection of Fiebre Verde - Lilac Blue Dolomite from Muzo (#6400)  

Tobi wrote:
Fiebre Verde wrote:
Blue Dolomite is not uncommon in both Emerald belts [...] In the Western Belt (Muzo and La Pita), it takes the form of irregular aggregates and has a very attractive lilac blue cast [...]
Fiebre azul now instead of fiebre verde? ;-)

... not quite Tobi :-)
But I like blue too and was tempted to add that blue dolomite from the Eastern Belt in my collection to create a balance with the Muzo one. Well, another time...

In Piedra de Chulo, the blue dolomite takes the form of grey-blue flattened rhombohedral centimetric crystals.

Oh, by the way, Piedra de Chulo material is often used as host rock for fake specimens.
It's due to the large well-shaped crystals (Dolomite, Calcite, Pyrite) it usually comes with.
I am yet to see blue dolomite and emerald side by side.

Fiebre Verdazul



Chivor_Piedra_de_Chulo_1anb.JPG
 Mineral: Dolomite, Calcite
 Locality:
Chivor mining district, Piedra de Chulo Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 15cm across
 Description:
NOT in my collection :-(
 Viewed:  2690 Time(s)

Chivor_Piedra_de_Chulo_1anb.JPG


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Fiebre Verde




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PostPosted: Jun 12, 2017 15:23    Post subject: Re: Collection of Fiebre Verde - Muzo (#653)  

Lagoon green crystals partly covered with a film of tiny calcite crystals.
Host rock is black shale.



IMG_2381nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 90x45x58mm, main xl=16x11mm
 Description:
 Viewed:  2611 Time(s)

IMG_2381nb.JPG



IMG_2396nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Pyrite
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 90x45x58mm, main xl=16x11mm
 Description:
 Viewed:  2604 Time(s)

IMG_2396nb.JPG


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PostPosted: Jun 17, 2017 12:27    Post subject: Re: Collection of Fiebre Verde - Cunas (#655)  

Cunas keeps producing fine material.
Basal pinacoid face is heavily etched, revealing many cavities.
White calcite, on black shale.



IMG_2419nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x63x56mm, xl=10x6mm
 Description:
 Viewed:  2516 Time(s)

IMG_2419nb.JPG



IMG_2481nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x63x56mm, xl=10x6mm
 Description:
 Viewed:  2510 Time(s)

IMG_2481nb.JPG



IMG_2495nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x63x56mm, xl=10x6mm
 Description:
 Viewed:  2512 Time(s)

IMG_2495nb.JPG



IMG_2519nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x63x56mm, xl=10x6mm
 Description:
 Viewed:  2508 Time(s)

IMG_2519nb.JPG



IMG_2500nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x63x56mm, xl=10x6mm
 Description:
 Viewed:  2524 Time(s)

IMG_2500nb.JPG


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Fiebre Verde




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PostPosted: Jun 20, 2017 08:43    Post subject: Re: Collection of Fiebre Verde - Chivor (#656)  

Upper half of the beryl crystal is translucent.
Calcite, on highly oxidized brecciated matrix.



IMG_2557nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Chivor mining district, Porvenir Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x87x77mm, main xl=43mm
 Description:
 Viewed:  2392 Time(s)

IMG_2557nb.JPG



IMG_2647nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Chivor mining district, Porvenir Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x87x77mm, main xl=43mm
 Description:
 Viewed:  2395 Time(s)

IMG_2647nb.JPG



IMG_2625nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Chivor mining district, Porvenir Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x87x77mm, main xl=43mm
 Description:
 Viewed:  2394 Time(s)

IMG_2625nb.JPG



IMG_2620nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
Chivor mining district, Porvenir Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 65x87x77mm, main xl=43mm
 Description:
 Viewed:  2400 Time(s)

IMG_2620nb.JPG


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Fiebre Verde




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PostPosted: Jun 24, 2017 14:25    Post subject: Re: Collection of Fiebre Verde - Chivor (#657)  

Grey calcite rhombs, white laminar albite, oxidized pyrite.
Heavily etched basal pinacoid face.
Host rock is black shale.



IMG_2656nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x18x21mm, xl=5mm
 Description:
 Viewed:  2271 Time(s)

IMG_2656nb.JPG



IMG_2684nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x18x21mm, xl=5mm
 Description:
 Viewed:  2271 Time(s)

IMG_2684nb.JPG



IMG_2694nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite), Calcite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 51x18x21mm, xl=5mm
 Description:
 Viewed:  2281 Time(s)

IMG_2694nb.JPG


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PostPosted: Jun 27, 2017 11:05    Post subject: Re: Collection of Fiebre Verde - La Pita (#658)  

Small aggregate from La Pita.
Host rock is black shale.



IMG_2737nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 28x36x19mm, aggregate=6x9mm
 Description:
 Viewed:  2181 Time(s)

IMG_2737nb.JPG



IMG_2776nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 28x36x19mm, aggregate=6x9mm
 Description:
 Viewed:  2177 Time(s)

IMG_2776nb.JPG



IMG_2748nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite
 Locality:
La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 28x36x19mm, aggregate=6x9mm
 Description:
 Viewed:  2183 Time(s)

IMG_2748nb.JPG


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PostPosted: Jul 21, 2017 09:22    Post subject: Re: Collection of Fiebre Verde - Cunas (#661)  

Basal pinacoid face is etched, revealing many cavities.
Host rock is black shale.



IMG_3065nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x41x24mm, xl=9mm
 Description:
 Viewed:  1946 Time(s)

IMG_3065nb.JPG



IMG_3114nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x41x24mm, xl=9mm
 Description:
 Viewed:  1938 Time(s)

IMG_3114nb.JPG



IMG_3172nb.JPG
 Mineral: Beryl (variety emerald), Calcite
 Locality:
La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 37x41x24mm, xl=9mm
 Description:
 Viewed:  1943 Time(s)

IMG_3172nb.JPG


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PostPosted: Jul 25, 2017 11:38    Post subject: Re: Collection of Fiebre Verde - Chivor (#660)  

Translucent beryl crystal on oxidized black shale.
Probably from Buenavista Mine.



IMG_2943nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite)
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x25x17mm, xl=7mm
 Description:
 Viewed:  1789 Time(s)

IMG_2943nb.JPG



IMG_3006nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite)
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x25x17mm, xl=7mm
 Description:
 Viewed:  1793 Time(s)

IMG_3006nb.JPG



IMG_2965nb.JPG
 Mineral: Beryl (variety emerald), Albite (variety cleavelandite)
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 19x25x17mm, xl=7mm
 Description:
 Viewed:  1798 Time(s)

IMG_2965nb.JPG


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PostPosted: Jul 29, 2017 03:35    Post subject: Re: Collection of Fiebre Verde - Chivor (#662)  

On black shale.


IMG_3273nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 32x41x31mm, xl=15mm
 Description:
 Viewed:  1668 Time(s)

IMG_3273nb.JPG



IMG_3227nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 32x41x31mm, xl=15mm
 Description:
 Viewed:  1664 Time(s)

IMG_3227nb.JPG



IMG_3320nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Dolomite, Pyrite
 Locality:
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 32x41x31mm, xl=15mm
 Description:
 Viewed:  1665 Time(s)

IMG_3320nb.JPG


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PostPosted: Aug 07, 2017 14:00    Post subject: Re: Collection of Fiebre Verde - Peñas Blancas (#659)  

Not easy to go back to real life...
Not exactly an XXL specimen but it's real and can be found in other places than museums.
Combination of clear quartz and emerald aggregate.
Host rock is fine-grained dolomitic limestone.



IMG_2791nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x30x34mm, aggregate with xls up to 10mm
 Description:
 Viewed:  1461 Time(s)

IMG_2791nb.JPG



IMG_2821nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x30x34mm, aggregate with xls up to 10mm
 Description:
 Viewed:  1462 Time(s)

IMG_2821nb.JPG



IMG_2807nb.JPG
 Mineral: Beryl (variety emerald), Calcite, Quartz
 Locality:
Peñas Blancas Mine, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 43x30x34mm, aggregate with xls up to 10mm
 Description:
 Viewed:  1461 Time(s)

IMG_2807nb.JPG


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PostPosted: Aug 08, 2017 12:43    Post subject: Re: Collection of Fiebre Verde - Sodalite (#8700)  

Something different for a change :-)
A specimen I brought from one of my numerous trips to Southern Africa.
Quartz veins running through the specimen.



IMG_3363nb.JPG
 Mineral: Sodalite, Quartz
 Locality:
Sodalite Mine, Orotumba, Swartbooisdrif, Kunene Region, Namibia
 Dimensions: 82x74x43mm
 Description:
 Viewed:  1403 Time(s)

IMG_3363nb.JPG


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PostPosted: Aug 11, 2017 02:30    Post subject: Re: Collection of Fiebre Verde - Chivor (#663)  

Palo Arañado crystal exhibiting a polycrystalline termination


IMG_3443nb.JPG
 Mineral: Beryl (variety emerald)
 Locality:
Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 16mm
 Description:
 Viewed:  1234 Time(s)

IMG_3443nb.JPG



IMG_3418nb.JPG
 Mineral: Beryl (variety emerald)
 Locality:
Chivor mining district, Palo Arañado Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia
 Dimensions: 16mm
 Description:
 Viewed:  1242 Time(s)

IMG_3418nb.JPG


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Tobi




Joined: 07 Apr 2009
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PostPosted: Aug 11, 2017 09:53    Post subject: Re: Collection of Fiebre Verde  

Great photos of the last one, perfect use of light!
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Fiebre Verde




Joined: 11 Sep 2013
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PostPosted: Aug 12, 2017 05:39    Post subject: Re: Collection of Fiebre Verde  

Tobi wrote:
Great photos of the last one, perfect use of light!

Thanks Tobi!
Had the same kind of horror trip as yours with the Dalnegorsk Sphalerite, trying as many whitish backgrounds as possible, but the resulting color didn't not look right.
No matter the background color, working out the optimal lighting conditions always requires time and patience for these small crystals, at least for me.
Gérard
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ploum




Joined: 12 Nov 2007
Posts: 948
Location: Near Annecy


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PostPosted: Aug 12, 2017 10:11    Post subject: Re: Collection of Fiebre Verde  

Take all and come near annecy ;).
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