Category:Carbonaceous shale mineralized with microscopic chalcocite (Nonesuch Formation, Mesoproterozoic; Michigan, USA)

Media in category "Carbonaceous shale mineralized with microscopic chalcocite (Nonesuch Formation, Mesoproterozoic; Michigan, USA)"

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

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  Carbonaceous shale mineralized with microscopic chalcocite (Nonesuch Formation, Mesoproterozoic; Upper Peninsula of Michigan, USA) 1.jpg 3,362 × 1,220; 2.87 MB
  
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  Carbonaceous shale mineralized with microscopic chalcocite (Nonesuch Formation, Mesoproterozoic; Upper Peninsula of Michigan, USA) 2.jpg 3,521 × 1,275; 3.69 MB