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Image: Cristobalite-Fayalite-40050

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Cristobalite-Fayalite-40050.jpg(600 × 541 pixels, file size: 72 KB, MIME type: image/jpeg)

Description: Cristobalite, Fayalite Locality: Canyon Butte occurrence (Couger Butte), Canyon Butte, Siskiyou County, California, USA (Locality at mindat.org) This example of cristobalite on obsidian, created by devitrification of the obsidian, exhibits a large vesicle 2.5 cm across. 6 x 5.4 x 2.5 cm
Title: Cristobalite-Fayalite-40050
Credit: http://www.mindat.org/photo-40050.html
Author: Rob Lavinsky / iRocks.com
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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