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Phylum Bryozoa |
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Phylum Brachiopoda |
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Phylum Arthropoda, Class Trilobita |
|
Phylum Arthropoda, Class Trilobita |
|
Phylum Arthropoda, Class Trilobita |
|
Phylum Arthropoda, Class Cirripedia |
|
Petrified Wood |
|
Petrified Wood |
|
Niccolite |
|
Native Sulfur |
|
Native Silver |
|
Native Copper |
|
Mtorolite (Chrome Chalcedony) |
|
Mohs Hardness Scale (Graphic) |
|
Melanterite on Calcite |
|
Marcasite |
|
Manufactured Sulfur |
|
Manganese Ore |
|
Malachite and Chrysocolla |
|
Magnetite |