| References: | Rocks & Minerals: 21: 490; Rocks & Minerals: 22: 925; 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: 264; Rocks & Minerals (1996): 71. |