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Stokesite
Type Locality
Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Mineral Data
CaSn[Si
3
O
9
]·2H
2
O
Strunz:
9.DM.05
Physical Properties
Streak:
White
Hardness:
6.0
Tenacity:
brittle
