"Andalusite" Quotes from Famous Books
... precise age of which is uncertain, occur at the Black Dog rock north of Aberdeen, at Belhelvie and near Old Meldrum. Where the schists of sedimentary origin have been pierced by these igneous intrusions, they are charged with contact minerals such as sillimanite, cordierite, kyanite and andalusite. Cordierite-bearing rocks occur near Ellon, at the foot of Bennachie, and on the top of the Buck of Cahrach. A banded and mottled calc-silicate hornfels occurring with the limestone at Iyerry Falls, W. N.W. ... — Project Gutenberg Encyclopedia |