Category:Phosphorite concretions

Subcategories

This category has only the following subcategory.

Media in category "Phosphorite concretions"

The following 3 files are in this category, out of 3 total.

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  Helicoprion sp. (fossil shark tooth whorl) in black concretionary phosphorite (Morris Member, Phosphoria Formation, mid-Permian; Waterloo Mine, Bear Lake County, Idaho, USA) (34327241886).jpg 2,399 × 1,913; 4.3 MB
  
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  Kilianstollen Phosphoritkonkretion 2.jpg 3,493 × 2,126; 2.38 MB
  
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  Kilianstollen Phosphoritkonkretion.jpg 3,396 × 2,465; 2.28 MB