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Genthelvite

Type Locality
West Cheyenne Canon, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USA
Mineral Data
Zn4(Be3Si3O12)S
Strunz: 
9.FB.10
Physical Properties
Hardness: 
6.0 - 6.5
Tenacity: 
brittle
Synonyms
Synonyms: 
Genthelvite -
Photos