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Dwornikite, (Ni,Fe)SO4 · H2O, a member of the kieserite group from Minasragra, Peru

January 1, 1982

Dwornikite, (Ni1−xFex)SO4 · H2O is a member of the kieserite group, monoclinic with space group C2/c. Specimens from Minasragra, Peru with x ∼ 0.1 have a unit cell with a = 6.839(2), b = 7.582(2), c = 7.474(2) Å, and β = 117.85(2)°. The six strongest lines of the powder pattern are: 3.342 (12, 100), 4.732 (110, 70), 3.024 (200, 70), 4.754 (11, 50), 3.293 (021, 35), 2.491 (022, 35). The mineral occurs as fine grained white aggregates associated with vanadium sulphide ores containing patronite and bravoite, mixed with other oxidation products. New unit cell data for the synthetic end-member compounds NiSO4 · H2O and FeSO4 · H2O, and new X-ray powder data for retgersite (NiSO4 · 6H2O) are provided.

Publication Year 1982
Title Dwornikite, (Ni,Fe)SO4 · H2O, a member of the kieserite group from Minasragra, Peru
DOI 10.1180/minmag.1982.046.340.09
Authors Charles Milton, Howard T. Evans, Robert G. Johnson
Publication Type Article
Publication Subtype Journal Article
Series Title Mineralogical Magazine
Index ID 70011828
Record Source USGS Publications Warehouse
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