Subject ASC00012yn
The Quarterly journal of the Geological Society of London.
v.50 (1894), Page 652 (1894)
Smithsonian Libraries
BHL Page 39089458
Keywords
minerals geology analysis tertiary gabbros tertiary analyses composition silica alumina lime magnesia labradorite magnetite augite hornblende bands rock-specimens Jermyn Street soda potash igneous rock analysis