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ATHENA

MINERALOGY

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Mineral: HELIOPHYLLITE = ECDEMITE
Formula: Pb6As2O7Cl4 (?)
Crystal System: Orthorhombic
References: Acta Min. Sinica 5 (1985), 216; HB3 (1997); RJM 32v (2020), 209
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Varmland, Wermland), Sweden

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