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Member of: Wermlandite Group > Hydrotalcite Supergroup. Name: For American mineralogist and mineral dealer, Anthony J. Nikischer (b. 1949), who first analyzed the mineral. Type Locality: ⓘ Huanuni mine, Huanuni, Pantaleón Dalence Province, Oruro, Bolivia. The Fe analogue of shigaite and poellmannite.
Nikischerite. Comments: Yellowish green nikischerite on matrix. Location: Huanuni Mine, Dalence Province, Bolivia. Scale: Crystal size 5 mm. © Tom Loomis / Dakota Matrix
Nikischerite 2+Fe 6 Al 3 (OH) 18 [Na(H 2 O) 6](SO 4) 2 ·6H 2 O Crystal Data: Hexagonal. Point Group: 3-. As micaceous {00*1} plates, to 4 mm, that form radiating, irregular spherical aggregates and seams to 1 cm. Physical Properties: Cleavage: Perfect on {00*1}. Fracture: Irregular. Tenacity: Brittle.
Nikischerite. Named for Anthony J. Nikischer, the American mineralogist and mineral dealer who was the first to analyze the mineral. Appears as green, dull to greasy micaceous tablets, and in aggregates.
Here is a great specimen of the immensely rare and newly approved sulfate Nikischerite (analogue of shigaite). This piece features two fantastic deep forest green spherical crystal groups perched atop additional crystals of Nikischerite.
Mar 1, 2003 · Nikischerite, ideally NaFe62+ Al3 (SO4)2 (OH 18 (H2O)12, is a new mineral from the Huanuni tin mine, Dalence Province, Oruro Department, Bolivia. It occurs as small micaceous plates (to 4 mm)...
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Nikischerite - The Canadian Mineralogist 41 (2003), 79-82. Publication autors: Huminicki D M C, Hawthorne F C, a=9.347, b=9.347, c=33.000, α=90, β=90, γ=120, V=2496.831, D=2.301, Space group: 'R -3'. The crystal structure of nikischerite, NaFeAl3 (SO4)2 (OH)18 (H2O)12, a mineral of the shigaite group.