Ref.: 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: 376.
http://rruff.geo.arizona.edu/doclib/cm/vol39/CM39_111.pdf
http://bioge.ubbcluj.ro/~bonac/Baita_can_mineral.pdf