Subject ASC000131r
The Quarterly journal of the Geological Society of London.
v.50 (1894), Page 280 (1894)
Smithsonian Libraries
BHL Page 39089052
Keywords
dyke Grum Alp. silica greenstones microscopic view section Geology stone minerals slice geological strata mineral Section cut from middle part of the second dyke by the path to the Grum Alp x20