AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from California > Cristobalite and Fayalite in Obsidian

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Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

 
Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

Cristobalite and Fayalite in Obsidian from Cougar Butte, Siskiyou County, California

DESCRIPTION:No. 61467
Mineral:Cristobalite and Fayalite in Obsidian
Locality:Cougar Butte, Siskiyou County, California
Description:Shiny black obsidian with spherical gas cavities lined with gray cristobalite hemispherical aggregates to 0.2 mm diameter plus microscopic dark fayalite crystals. The black obsidian exhibits classic conchoidal surfaces.
Overall Size:9x7x6 cm
Crystals:micro
Status: Sold - Posted here for reference only
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