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Clintonite

Type Locality
Clintonite type locality, Amity, Town of Warwick, Orange Co., New York, USA
Mineral Data
Ca(Mg,Al)3(Al3SiO10)(OH)2
Strunz: 
9.EC.35
Physical Properties
Hardness: 
3.5 - 6.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Xanthophyllite