Minerals For Industry Northern California PDF Download

Excerpt from Minerals of California Since the appearance of the second list, our knowledge of the geology and mineralogy of the State has vastly increased. The ore deposits of many of the counties, the gem and borate deposits of the southern counties, and the petrography of many districts, have been investigated and described, so that our present knowledge of the mineralogy of the State is much more general. The present list contains more than double the number of definite mineral species given by Hanks, besides many sub-species and varieties. The desire has been to make the list as complete as possible of the known minerals, and where they occur, but the list of localities where the same mineral might be found is necessarily incomplete. Many minerals are so commonly distributed throughout the State, such as small bodies or pockets of metallic minerals and the rock-forming minerals, that it would be useless and impossible to cite all of their occurrences. In such a vast area as California, localities may be known to local col lectors where excellent specimens may occur, unknown to the author. Some minerals may be known to occur in the State which have not been mentioned in this work, but it is believed that they will be very few in number. 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.