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Anorthoclase-219058.jpg (340 × 575 pixels, file size: 75 KB, MIME type: image/jpeg)

Summary

Description
English: Anorthoclase
Locality: Mt Erebus, Ross Island, Victoria Land, Eastern Antarctica, Antarctica (Locality at mindat.org)
Size: 4.5 x 2.5 x 1.5 cm.
Unless you have been to Antarctica or know someone who has, this is a rarely available mineral species and specimen. This is a euhedral, tannish-gray anorthoclase feldspar crystal from Mt. Erebus, on Ross Island. This flattened, floater crystal is pristine. Mt. Erebus Volcano (3794m) is home to the world’s only persistently convecting anorthoclase-phonolite lava lake. There is only one other place on the planet where these crystals can be found, Mt. Kenya, Africa. Crystals grow in the magma beneath Erebus and get spit out of the mountain inside glassy volcanic bombs. The glass quickly weathers away leaving the mountainside covered in crystals. These crystals are coveted by almost everyone at McMurdo Station. Links to this information were kindly provided by a geologist/neighbor of mine, who spent several field seasons mapping there. This was obtained in a small collection of a geologist, some years ago.
Deutsch: Anorthoklas
Fundort: Mount Erebus, Ross-Insel, Viktorialand, Ostantarktis, Antarktis (Fundort bei mindat.org)
Größe: 4.5 x 2.5 x 1.5 cm.
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-219058.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 Edit this at Wikidata
Authority file
creator QS:P170,Q56247090

Licensing

Rob Lavinsky, the copyright holder of this work, hereby publishes it under the following license:
w:en:Creative Commons
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Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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Date/TimeThumbnailDimensionsUserComment
current00:39, 27 April 2010Thumbnail for version as of 00:39, 27 April 2010340 × 575 (75 KB)RKBot== {{int:filedesc}} == {{Information |Description= {{en|1=Anorthoclase :: Locality: Mt Erebus, Ross Island, Victoria Land, [[:en:East Antarctica|Eastern Antarctica

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