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ATHENA

MINERALOGY

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Mineral: HENNOMARTINITE
Formula: SrMn3+2Si2O7(OH)2.H2O
Crystal System: Orthorhombic
Group: Lawsonite group
IMA Number: 1992-033
References: SMPM 73 (1993), 349; HB2/1 (1995); NM 90-94 (1997)
Type Locality: Wessels mine, Kalahari Mn field, Kuruman Hill, Cape Province, South Africa

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