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Glauberite

Type Locality
El Castellar Mine, Villarrubia de Santiago, Ocaña, Toledo, Castile-La Mancha, Spain
Mineral Data
Na2Ca(SO4)2
Strunz: 
7.AD.25
Physical Properties
Crystal System: 
Monoclinic
Streak: 
White
Hardness: 
2.5 - 3.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Glauberita
Photos