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Colemanite, Calcite


Colemanite : Ca[B3O4(OH)3] · H2O, Calcite : CaCO3

Photo Copyright © Rock Currier  - Creative Commons Attribution Licence - Some Rights Reserved
Locality: U.S. Borax Open Pit, U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Colemanite and Calcite, R. Currier collection. The scale at the bottom of the image is an inch with a rule at one cm.

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