![](http://www.alamy.com/thumbs/6/22027EB2-ADF1-4525-8898-4055AEBD3502/2X61DTM.jpg)
White Cristobalite on obsidian, Some green, brown fayalite present. From Cougar Butte, Cascade Range, Siskiyou County, California, United States of Am
Size: 7000px × 4667px
Photo credit: © Enguerrand Cales / Alamy / Afripics
License: Royalty Free
Model Released: No
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