Excerpt from Abitibi-Night Hawk Gold Area, And, Larder Lake Gold Area The search for gold in northeastern Ontario has revealed a widespread region in which Keewatin greenstones 1 of volcanic origin constitute the predominant rock, Prospectors have found by experience that gold-bearing quartz veins occur more abundantly in these ancient greenstones than in the vast stretches of granitic rocks which are so common in the Province of Ontario. It has been further discovered that, while gold deposits occur mainly in these greenstones, they are, at the same time, more or less closely associated with intrusions of acid porphyry or granite. The greenstone areas of northeastern Ontario have already yielded great wealth and prosperity to the Province. Porcupine, which, although discovered in 1909, really only began to produce on a substantial scale in 1912, has yielded more than forty-four million dollars in gold up to the end of 1918, while Kirkland Lake, which lies about 60 miles southeast of Porcupine, has also produced important quantities of the precious metal. In view, therefore, of the importance of having geological maps and reports of those parts of the country which are made up chiefly of greenstones, the geological staff of the Ontario Bureau of Mines, during the field season of 1918, devoted its attention to mapping an area which lies between Lake Abitibi and Night Hawk lake in the district of Timiskaming, Fig. 1. This area is immediately east and northeast of Porcupine, while to the south about 20 miles is the gold area of Kirkland lake. 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.