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ATHENA

MINERALOGY

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Mineral: TRIGONITE
Formula: Pb3Mn(As3+O3)2(As3+O2OH)
Crystal System: Monoclinic
IMA Number: 1920
References: TMPM 25 (1978), 95; HB3 (1997)
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Varmland, Wermland), Sweden

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