| American Mineralogist (1992): 77: 1119-1120. European Journal of Mineralogy (1991): 3: 69 American Mineralogist (1991): 76, 1734-1735 Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. Dana, Edward Salisbury (1892) A System of Mineralogy (6th ed.) |