Category:Rock samples from Colorado
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This category has only the following subcategory.
Media in category "Rock samples from Colorado"
The following 3 files are in this category, out of 3 total.
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Colorado Oil Shale.jpg 2,951 × 1,782; 3.93 MB
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Oil shale Colorado.JPG 4,608 × 3,072; 2.46 MB
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Volcanic tuff (near Cripple Creek, Colorado, USA) 1.jpg 2,847 × 2,279; 4.46 MB