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ATHENA

MINERALOGY

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Mineral: CENTENNIALITE
Formula: CaCu3Cl2(OH)6.nH2O (n near 0.7)
Crystal System: Rhombohedral (Trigonal)
IMA Number: 2013-110
References: MM 78 (2014), 165-170; MM 81 (2017), 1105; Phys. Chem. Min. 43 (2016), 127
Type Locality: Centennial mine, Calumet, Houghton County, Michigan, USA

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