Category:Partially devitrified rhyolitic obsidian

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This category has only the following subcategory.

Media in category "Partially devitrified rhyolitic obsidian"

The following 2 files are in this category, out of 2 total.

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  Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 13 (46084070044).jpg 4,000 × 3,000; 5.63 MB
  
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  Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 22 (46091701544).jpg 4,000 × 3,000; 6.42 MB