Subject ASC0001dwa
The Quarterly journal of the Geological Society of London.
v.49 (1893), Page 544 (1893)
Natural History Museum Library, London
BHL Page 45959188
Keywords
rocks. specific gravity. Cir Mhor Dyke minerals charts geology dyke cir mhor rock diagrammatic plan granite augite-andesite quartz-felsite pitchstone-porphyry quartz-pantellerite analyses chemical composition specific gravity arran Granite Augite-andesite quartz pitchstone porphyry pantellerite judd silica sulphur potash ferric ferrous lime magnesia soda alumina gravity thorpe barron cullis