File:Opal-61087.jpg

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Opal-61087.jpg ‎(448 × 600 pixels, file size: 32 KB, MIME type: image/jpeg)

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Description
English: Opal
Locality: Huanuni mine, Huanuni, Dalence Province, Oruro Department, Bolivia (Locality at mindat.org)
This is complete and perfect all around! When I bought this, I was amazed at the surrealistic, artistic form of the piece. It is complete all around and looks like nothing I have seen in nature. In fact, I was so unsure of it that I emailed Bolivian expert and dealer Alfredo Petrov. This information following is from him, reprinted with thanks: Huanuni used to have enormous cassiterite-pyrite veins traversing shale/hornfels country rock. The pyrite decomposed, liberating H2SO4, the loose cassiterite collapsed to the floor of the veins forming meters-thick masses of pure cassiterite breccia, and leaving big caves in the top of the veins. The sulfuric acid attacked the surrounding shales... hence the opal stalactites and stalagmites in the caves. I sold this to Marty. The one I sold Marty was by far the best one I ever saw (most are more like wavy broken curtains on the walls rather than aesthetic stalactites). 8 x 3.8 x 3.3 cm
Deutsch: Opal
Fundort: Huanuni mine, Huanuni, Provinz Dalence, Oruro , Bolivien (Fundort bei mindat.org)
Date before March 2010
date QS:P,+2010-03-00T00:00:00Z/7,P1326,+2010-03-00T00:00:00Z/10
Source http://www.mindat.org/photo-61087.html
Author
Robert M. Lavinsky  (1972–)  wikidata:Q56247090
 
Alternative names
Robert Matthew Lavinsky; Lavinsky, Robert M.; Lavinsky R M
Description American mineral collector and mineral dealer
iRocks.com (Mineralogical Record)
Date of birth 13 December 1972 Edit this at Wikidata
Location of birth Columbus
Authority file
creator QS:P170,Q56247090

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Rob Lavinsky, the copyright holder of this work, hereby publishes it under the following license:
w:en:Creative Commons
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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current23:07, 25 April 2010Thumbnail for version as of 23:07, 25 April 2010448 × 600 (32 KB)RKBot (talk | contribs)== {{int:filedesc}} == {{Information |Description= {{en|1=Opal :: Locality: Huanuni mine, Huanuni, Dalence Province, Oruro Department, Bolivia ([http://www.mindat.org/loc-334.html Locality at m

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