| Dunn, P.J. (1995): Part 5: 665-666. 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. Palache, C. (1935) USGS Professional Paper 180:123 |
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