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MINERALOGY

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Mineral: JULGOLDITE-(Fe+++)
Formula: Ca2Fe3+(Fe3+,Al)2(SiO4)(Si2O7)(OH)2.H2O
Crystal System: Monoclinic
Group: Pumpellyite group
IMA Number: 1973 s.p.
References: CM 12 (1973), 219
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Wermland, Varmland), Sweden

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