Category:Manganese oxides in Montana
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Media in category "Manganese oxides in Montana"
The following 2 files are in this category, out of 2 total.
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Composite hydrothermal vein (Emma Vein, 62-66 Ma; Butte, Montana, USA) 28.jpg 3,008 × 2,000; 4.78 MB
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Composite hydrothermal vein (Emma Vein, 62-66 Ma; Butte, Montana, USA) 29.jpg 3,008 × 2,000; 5.56 MB