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Coquimbite, Halotrichite


Coquimbite : Fe2(SO4)3·9H2O, Halotrichite : FeAl2(SO4)4·22H2O

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Locality: Dexter No. 7 Mine, Calf Mesa, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
Sharp purple hexagonal coquimbite xls buried in fibrous halotrichite on römerite (not seen). Xls are 1.5mm to 2mm.

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