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Gerhardtite

Type Locality
United Verde Mine (The Big Hole; Big Hole property; Hull Mine; Hopewell tunnel; Patented claim 3480; Patented claim 2812; Patented claims 3348), Jerome, Verde District, Black Hills (Black Hill Range), Yavapai Co., Arizona, USA
Mineral Data
Cu2(NO3)(OH)3
Strunz: 
5.NB.05
Physical Properties
Crystal System: 
Orthorhombic
Hardness: 
2.0
Tenacity: 
flexible
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