(Grube Daniel, Neustädtel, Revier Schneeberg, Erzgebirge, Sachsen, Deutschland)
Ref.: Journal of the Washington Academy of Science (1914): 4, 354-356.
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: 1093.