Gold Veins Near Great Falls, Maryland

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Excerpt from Gold Veins Near Great Falls, Maryland: A Discussion of the History of Prospecting and Mining in the Great Falls Area and a Description of the Gold-Bearing Quartz VeinsSmall deposits of native gold are present along an anastomosing system of quartz veins and shear zones just east of Great Falls, Montgomery County, Md. The deposits were discovered in 1861 and were worked sporadically until 1951, yielding more than ounces of gold.The vein system and the principal veins within it strike 'a few degrees west of north, at an appreciable angle to foliation and fold axial planes in enclosing rocks of the Wis'sahickon Formation of late Precambrian( age. The veins cut granitic rocks of Devonian or pre-devonian age and may be as young as Triassic.Further development of the deposits is unlikely under present economic condi tions because of their generally low gold content and because much of the vein system lies on park property, but study of the Great Falls vein system may be useful in the search for similar deposits elsewhere in the Appalachian Piedmont.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.