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Rosemaryite
Type Locality
Rock Ridge pegmatite, Custer, Custer District, Custer Co., South Dakota, USA
Mineral Data
(Na,Ca,Mn)(Mn,Fe
2+
)(Fe
3+
,Mg)Al(PO
4
)
3
Strunz:
8.AC.15
Physical Properties
Hardness:
4.0 - 4.5
Tenacity:
brittle
