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Excerpt from Austin Brook Iron-Bearing District, New Brunswick In the southern and western part of the area eruptive rocks of basic character are found intruding into the porphyry. These rocks may b'e classed as gabbro or diabase. They are usually of a greenish grey colour, with a granular to fine tex ture. Other intrusions in the porphyry are numerous quartz veins. These are also very common in the ore. But are rarely seen in the gabbro. They vary in size from a fraction of an inch up to several inches in Width. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.

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