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Fluorellestadite
Type Locality
Coal mine No. 44, Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Mineral Data
Ca
5
(SiO
4
)
1.5
(SO
4
)
1.5
F
Strunz:
9.AH.25
Physical Properties
Hardness:
4.5
Tenacity:
very brittle
