Uranopolycrase

  
Brown to black, paper thin, elongated crystals to 1 mm well exposed but protected in vuggy matrix.
Origin: Cavetta Bassa, Elba Isle, Livorno Province, Tuscany, Italy type locality)
Sample size: 4 x 3.5 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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