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Osumilite-(Mg)

Type Locality
Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Mineral Data
KMg2Al3(Al2Si10)O30
Strunz: 
9.CM.05
Physical Properties
Hardness: 
5.0 - 6.0
Synonyms
Synonyms: 
Osumilite-Mg, Osumilite Mg, Osumilite - Mg and Osumilite- Mg