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Tschörtnerite

Type Locality
Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Mineral Data
Ca4(Ca,Sr,K,Ba)3Cu3[(OH)2|Al3Si3O12]4·nH2O
Strunz: 
9.GF.40
Physical Properties
Crystal System: 
Isometric
Hardness: 
4.5
Synonyms
Synonyms: 
Tschoertnerite and Tschortnerite