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Frondelite

Type Locality
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil
Mineral Data
Mn2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Physical Properties
Hardness: 
4.5
Tenacity: 
brittle
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