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Cronstedtite

Type Locality
Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic
Mineral Data
Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Strunz: 
9.ED.15
Physical Properties
Crystal System: 
Monoclinic, Trigonal, Hexagonal
Hardness: 
3.5
Tenacity: 
elastic
Synonyms
Synonyms: 
Cronstedite
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