Category:Native silver from the Portage Lake Volcanics

Subcategories

This category has only the following subcategory.

Media in category "Native silver from the Portage Lake Volcanics"

The following 14 files are in this category, out of 14 total.

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  Copper and silver (Mesoproterozoic, 1.05-1.06 Ga; Calumet and Hecla Mine, Calumet, Upper Peninsula of Michigan, USA) 1 (16691610774).jpg 3,468 × 2,996; 5.3 MB
  
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  Copper-silver glacial cobble (Mesoproterozoic, 1.05-1.06 Ga; Michigan, USA) 1 (16673627104).jpg 2,639 × 1,850; 2.85 MB
  
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  Silver (Kearsarge Lode, Mesoproterozoic, 1.05-1.06 Ga; Houghton County, Upper Peninsula of Michigan, USA) (17284945411).jpg 1,842 × 1,593; 2.39 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; copper mine near Houghton, Michigan, USA) 1 (17084983589).jpg 2,728 × 1,863; 4.3 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; copper mine near Houghton, Michigan, USA) 3 (17083636640).jpg 4,000 × 3,000; 7.64 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Kearsarge Mine, Houghton County, Upper Peninsula of Michigan, USA) 1 (17099357869).jpg 2,199 × 1,551; 2.65 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Michigan Mine, Ontonagon County, Upper Peninsula of Michigan, USA) (17259628616).jpg 1,797 × 1,524; 2.2 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Michigan Mine, Ontonagon County, Upper Peninsula of Michigan, USA) (17285172135).jpg 1,894 × 1,413; 2.27 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Mohawk Mine, Keweenaw County, Upper Peninsula of Michigan, USA) 1 (17097497148).jpg 1,450 × 1,669; 1.98 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Mohawk Mine, Keweenaw County, Upper Peninsula of Michigan, USA) 2 (17294471305).jpg 1,417 × 1,918; 1.75 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Rockland, Ontonagon County, Upper Peninsula of Michigan, USA) (17259638776).jpg 1,567 × 1,201; 1.53 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Wolverine Mine, Upper Peninsula of Michigan, USA) 2 (17100315830).jpg 1,982 × 2,239; 3.29 MB
  
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  Silver (Mesoproterozoic, 1.05-1.06 Ga; Wolverine Mine, Upper Peninsula of Michigan, USA) 3 (17100312810).jpg 2,011 × 1,897; 2.84 MB
  
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  Silver and copper (Mesoproterozoic, 1.05-1.06 Ga; Upper Peninsula of Michigan, USA) (17283607002).jpg 2,341 × 1,824; 4.06 MB