| 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: 760, 998.; Econ Geol (1994) 89:1249-1261; Econ Geol (1994) 89:820-839; 33 IGC excursion No 15, August 15th – 21st 2008 |