Category:Cupriferous amygdaloidal basalt

Media in category "Cupriferous amygdaloidal basalt"

This category contains only the following file.

• 
  Cupriferous amygdaloidal basalt (Knowlton Flow, Portage Lake Volcanic Series, upper Mesoproterozoic, ~1.096 Ga; Caledonia Mine, Upper Peninsula of Michigan, USA).jpg 960 × 629; 538 KB