| References: | 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: 800; Reed, Juliet C. (1976), Annotated Biblio. of Mins. New to the PA List 1965-1974, The Mineralogical Soc. of PA, Inc.: 66-67; Gordon, S. G. (1922), Mineralogy of PA: 135-136; Montgomery, A. (Jan, 1963), "Gordon's PA Mineral List," in PA Mins (PM), PM (3), Keystone Newsletter; Lapham, D. M. & Geyer, Alan R. (1965), Min Collecting in PA:66; (1969): 68. |
