The Determination of Rockforming Minerals ... Authorized translation from the first German edition by Erastus G. Smith ... Second edition
A mineralogy manual by Eugen Hussak, translated from the German by Erastus G. Smith and issued by John Wiley & Sons in New York in 1893 for students and working petrographers identifying rock-forming minerals under the microscope. The figures are small circular fields of view in fine line and stipple, showing crystal outlines with Miller indices lettered inside, scattered cleavage fragments, and curved interference bands, giving designers a stock of ringed diagrams, indexed geometry, and hatched arcs.
