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Mazzite-Mg

Type Locality
Mont Semiol (Mont Semiouse; Mont Simiouse), Châtelneuf, Saint-Georges-en-Couzan, Loire, Rhône-Alpes, France
Mineral Data
(Mg,K,Ca)5(Si26Al10)O72·28H2O
Strunz: 
9.GC.20
Physical Properties
Colour: 
Colorless
Streak: 
White
Hardness: 
4.0 - 5.0
Synonyms
Synonyms: 
Mazzite Mg, Mazzite - Mg and Mazzite- Mg