A Dictionary of Applied Chemistry, Vol. 3 of 5 (Classic Reprint)

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Excerpt from A Dictionary of Applied Chemistry, Vol. 3 of 5It is not uncommon to find in granite nod ular masses which appear as dark patches on the fractured or polished surface of the rock. Whilst some of these inclusions seem to be fragments of foreign rock which have been caught up in the granitic magma and altered, others may be regarded as parts of the original magma differentiated during consolidation and it is notable that the inclusions are usually more basic than the matrix. (for comparative analyses of the granite and its inclusions, v. J. A. Phillips in Quart. J ourn. Geol. Soc. 1880, 36, Granite is extensively employed for construo tive purposes where massive work is required, as in the foundations Of buildings, in docks, sea walls, the piers of bridges, and lighthouses. The specific gravity of granite is about 26, a cubic foot weighing about 166 lbs and a cubic yard 2 tons.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.