File:Quartz-rom34a.jpg

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Quartz-rom34a.jpg ‎(800 × 533 pixels, file size: 100 KB, MIME type: image/jpeg)

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Summary

Description
English: Quartz
Locality: Piedra Parada (Piedras Parado), Municipio de Tatatila, Veracruz, Mexico (Locality at mindat.org)
Size: miniature, 4.7 x 3.5 x 1.2 cm
Amethyst (Japan-Law twin)
An extremely rare and famous specimen, this is "the Romero Amethyst twin" to many collectors. It is a freak of nature in that, for some reason, amethyst has not been found in Japan-law twinning as with its smoky and clear cousins. Nobody knows why. Yet, here is a true twin, precisely measured to confirm the relevant angles and prove the fact (often, apparent twins simply are out of plane and not true twins). It is a pristine, floater specimen considered to be perhaps the finest miniature sized quartz specimen from Mexico by many collectors. Romero obtained this piece in the early 1980s and I hear from other collectors that offers were often made to trade it out of him at very high prices, but were always politely turned down. This specimen from the Dr Miguel Romero collection was on loan exhibition to the University of Arizona Museum for over a decade, until my purchase of this collection in 2008. It was on display in special cases at the museum, and has since been featured in the book "The Miguel Romero Collection of Mexico Minerals" which we sponsored as a special supplement book (published by the Mineralogical Record in December of 2008).
Deutsch: Quarz
Fundort: Piedra Parada (Piedras Parado), Municipio de Tatatila, Veracruz , Mexiko (Fundort bei mindat.org)
Größe: 4.7 x 3.5 x 1.2 cm
Date before March 2010
date QS:P,+2010-03-00T00:00:00Z/7,P1326,+2010-03-00T00:00:00Z/10
Source Image: http://www.irocks.com/db_pics/new09/rom34a.jpg, Description: http://www.mindat.org/photo-266098.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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Licensing

Rob Lavinsky, the copyright holder of this work, hereby publishes it under the following license:
w:en:Creative Commons
attribution share alike
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Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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current19:47, 24 May 2010Thumbnail for version as of 19:47, 24 May 2010800 × 533 (100 KB)commons>RKBot== {{int:filedesc}} == {{Information |Description= {{en|1=Quartz :: Locality: Piedra Parada (Piedras Parado), Municipio de Tatatila, Veracruz, Mexico ([http://www.mindat.org/loc-7771.html Locality at mindat.org]) :

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