| Reference List: | Shepard C.U. (1857) Treatise on Mineralogy. third edition: vol. 2: 407.
Shepard, C.U. (1857) American Journal of Science: 24: 38.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 889. |
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