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Frondelite
Type Locality
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil
Mineral Data
Mn
2+
Fe
3+
4
(PO
4
)
3
(OH)
5
Strunz:
8.BC.10
Physical Properties
Hardness:
4.5
Tenacity:
brittle
