| Reference List: | Nordenskiöld (1832), Act. Soc. Fenn.: 1: 119, read April 25, 1832.
Nordenskiöld (1840), Ann. Phys.: 50: 656.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 775.
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