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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 18, 2015 07:14 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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Unusual specimen from Muzo.
Acicular crystal habit is not common at all in the 2 Colombian emerald districts.
Could be aragonite or calcite... or something else?
In the last close-up image, the brownish elongated crystal is very likely parisite.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
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32134 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
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32075 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
Complex crystallization patterns on the C-face. |
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32067 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
Note the presence of acicular crystals all around the emerald. |
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32102 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
Aragonite, calcite... or else? |
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32043 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
Aragonite, calcite... or else? |
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32060 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
FOV=10mm - Aragonite, calcite... or else? |
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32027 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Parisite, Aragonite(?) |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 38x40x31mm, xl=15x10mm |
Description: |
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32070 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 18, 2015 12:24 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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For those who are sick and tired of seeing emeralds in this thread, here is a nice break (Well, sort of, it's still green!)
I just found out that rendering dioptase-green is even more difficult than emerald-green.
This specimen was purchased by my father in Brazzaville back in the early 70's.
I doesn't seem to be glued but I might be wrong.
As per the locality, I have no idea where it comes from, so your comments and suggestions are welcomed. I labeled it as from "Republic of the Congo" but it could as well be from the ex-Zaire.
Mineral: | Dioptase |
Locality: | Republic of the Congo | |
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Dimensions: | 145x95x75mm |
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32092 Time(s) |
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Mineral: | Dioptase |
Locality: | Republic of the Congo | |
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Dimensions: | 145x95x75mm |
Description: |
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32060 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Jul 18, 2015 15:02 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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It looks like Calcite-Aragonite. Is very easy to check it, try if it fizz in dilute HCl or if it dissolves inside vinegar (after 24 hours)
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Jul 18, 2015 15:14 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 18, 2015 15:15 Post subject: Re: Collection of Fiebre Verde - Muzo with acicular ??? (#547) |
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Jordi Fabre wrote: |
It looks like Calcite-Aragonite. Is very easy to check it, try if it fizz in dilute HCl or if it dissolves inside vinegar (after 24 hours) |
Thanks Jordi - I will give it a try.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 18, 2015 15:34 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever.
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 18, 2015 16:42 Post subject: Re: Collection of Fiebre Verde - Chivor (#548) |
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Chivor at its very best!
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 25x25x32mm, xl=8x3mm |
Description: |
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Viewed: |
31983 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 25x25x32mm, xl=8x3mm |
Description: |
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Viewed: |
31991 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 25x25x32mm, xl=8x3mm |
Description: |
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Viewed: |
31965 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 25x25x32mm, xl=8x3mm |
Description: |
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Viewed: |
31953 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite |
Locality: | Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 25x25x32mm, xl=8x3mm |
Description: |
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31963 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 19, 2015 08:43 Post subject: Re: Collection of Fiebre Verde - Cunas (#551) |
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A beautifully balanced specimen from La Pita/Cunas with white calcite and oxidized pyrite.
Host rock is black shale (barely visible in the bottom left of the first image).
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 26x17x30mm, xl=9x2mm |
Description: |
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Viewed: |
31899 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 26x17x30mm, xl=9x2mm |
Description: |
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Viewed: |
31898 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 26x17x30mm, xl=9x2mm |
Description: |
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Viewed: |
31855 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | La Pita mining district, Cunas Mine, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 26x17x30mm, xl=9x2mm |
Description: |
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Viewed: |
31897 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 21, 2015 16:23 Post subject: Re: Collection of Fiebre Verde - Chivor (#553) |
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Another little jewel from the El Oriente mine in the Chivor district.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=12x6mm |
Description: |
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Viewed: |
31681 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=12x6mm |
Description: |
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Viewed: |
31688 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, El Oriente Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | xl=12x6mm |
Description: |
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31719 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Jul 23, 2015 05:04 Post subject: Re: Collection of Fiebre Verde - Muzo with rock crystal (#554) |
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The emerald - colorless transparent quartz association is more commonly found in Peñas Blancas than in Muzo.
White calcite is also visible on the opposite side of the emerald aggregate.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x39mm, xl=25x23mm |
Description: |
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Viewed: |
31679 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x39mm, xl=25x23mm |
Description: |
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Viewed: |
31624 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x39mm, xl=25x23mm |
Description: |
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Viewed: |
31665 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x39mm, xl=25x23mm |
Description: |
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Viewed: |
31654 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 53x39mm, xl=25x23mm |
Description: |
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Viewed: |
31651 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 04, 2015 16:53 Post subject: Re: Collection of Fiebre Verde - Muzo (#555) |
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Most of the fractures and internal cracks are perpendicular to the C-axis although some of them are parallel to it - see last image.
Host rock is black shale.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 64x55x65mm, xl=27mm |
Description: |
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Viewed: |
31387 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 64x55x65mm, xl=27mm |
Description: |
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Viewed: |
31313 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 64x55x65mm, xl=27mm |
Description: |
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Viewed: |
31303 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Aug 05, 2015 01:49 Post subject: Re: Collection of Fiebre Verde |
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Hi Gérard. Your specimens keep on amazing me. Please keep posting.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 05, 2015 04:33 Post subject: Re: Collection of Fiebre Verde |
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Pierre Joubert wrote: | Hi Gérard. Your specimens keep on amazing me. Please keep posting. |
Hi Pierre - good to hear from you!
Thanks for your kind comments.
More specimens to come in association with your favorite mineral.
Gérard
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Aug 05, 2015 05:02 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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Fiebre Verde wrote: | Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever. |
Hi Gerard. The orientation and irregularity of the dioptase crystals do look a bit unusual. You have a choice: dip it as Jordi suggested, or keep it with a question mark.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 05, 2015 05:34 Post subject: Re: Collection of Fiebre Verde - Dioptase (#9100) |
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Pierre Joubert wrote: | Fiebre Verde wrote: | Jordi Fabre wrote: |
Well, it seems glued. Very easy to check it, just submerge the specimen in Acetone.during 1-2 hours |
I was hoping not to hear this....
And if it is glued then I will lose the only "rock" my father left me :-(
(unless I glue everything back together of course).
I feel am engaged in a risky hobby more than ever. |
Hi Gerard. The orientation and irregularity of the dioptase crystals do look a bit unusual. You have a choice: dip it as Jordi suggested, or keep it with a question mark. |
Thanks for your remarks Pierre.
Should it be a glued specimen, it's a bit too late to tell my dad, from whom I inherited this vivid green... artistic object.
Will just keep it with a question mark along with my "too nice to be true" group of specimens.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 06, 2015 15:53 Post subject: Re: Collection of Fiebre Verde - La Pita with rock crystals (#556) |
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Emerald clusters are fairly common in the Western belt.
Complex crystallization patterns can be clearly seen on the faces of the various prisms (first 2 images).
Last image features a couple of clear colorless quartz crystals intersecting the upper part of the cluster.
Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 21x35mm, cluster=20mm long |
Description: |
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Viewed: |
31043 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 21x35mm, cluster=20mm long |
Description: |
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Viewed: |
31062 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 21x35mm, cluster=20mm long |
Description: |
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Viewed: |
31087 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Quartz |
Locality: | La Pita mining district, Municipio Maripí, Western Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 21x35mm, cluster=20mm long |
Description: |
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Viewed: |
31014 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 07, 2015 08:39 Post subject: Re: Collection of Fiebre Verde - Chivor (#557) |
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This specimen comes from the Buena Vista mine in the Chivor district.
The Buena Vista mine is located on a hill overlooking the surrounding area (might explain the origin of the name "Nice view"?).
Administratively speaking, it is off the "green" state of Boyacá by a few hundred meters, where virtually all the Colombian emeralds come from.
Not only the view from that open-pit mine is nice but also the quality of the emeralds it produces (when the mine operates, which does not happen often).
The one featured here below is a fine example of the top quality material produced in the Chivor district, from a collector's point of view.
Host rock is a hard clay material also known as argillite.
Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30931 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30878 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30881 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30905 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30887 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30913 Time(s) |
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Mineral: | Beryl (variety emerald), Calcite, Pyrite |
Locality: | Chivor mining district, Buena Vista Mine, Municipio Ubalá, Eastern Emerald Belt, Cundinamarca Department, Colombia | |
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Dimensions: | 30x12x42mm, main xl=13x5mm |
Description: |
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Viewed: |
30908 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Aug 08, 2015 06:54 Post subject: Re: Collection of Fiebre Verde |
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The more emeralds you show us, the more fascinated I am!
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 08, 2015 07:46 Post subject: Re: Collection of Fiebre Verde |
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Tobi wrote: | The more emeralds you show us, the more fascinated I am! |
Thanks Tobi for showing your appreciation!
Got hooked on the Colombian green treasure a while ago and stopped worrying about being addicted soon after.
Gérard
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Aug 10, 2015 09:49 Post subject: Re: Collection of Fiebre Verde - Chivor (#562) |
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A small specimen from a new find in the Chivor district.
All the crystals I have seen from this find exhibit a strong saturation.
Host rock is a crumbly gray shale.
Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30641 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30588 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30609 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30684 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30647 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30605 Time(s) |
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Mineral: | Beryl (variety emerald), Dolomite, Pyrite |
Locality: | Chivor mining district, San Gregorio Mine, Municipio Chivor, Eastern Emerald Belt, Boyacá Department, Colombia | |
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Dimensions: | 30x29x41mm, main xl=10mm |
Description: |
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Viewed: |
30663 Time(s) |
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