Book Description

Excerpt from A Study of Ore Deposits for the Practical Miner: With Descriptions of Ore Minerals, Rock, Minerals and Rocks, a Guide to the Prospector This book is the outgrowth of an unsuccessful search for something of its kind which the author felt the need of in his early mining experience. It is in part a condensation of personal experience and observation in the field covering a period of thirty years, in part the borrowed experience of other practical mining men, and in part a gleaning of facts and well-established theories from all available publications, chief among which are the United States Geological Survey Reports, various text-books on mining, the mining literature of different engineering and scientific societies and the many able articles in different leading mining journals. The book is written for the average miner, the prospector and the mining public. It is eminently practical, of simple language, concise in statement and deals only with essentials. A knowledge of minerals, ores, and rocks is important to a correct understanding of ore deposits, for all are intimately associated. A brief description therefore of the most important of these is given. The structural features of ore deposits and the walls enclosing them, together with the form, origin, and manner of occurrence of deposits have been given special attention. No attempt at classification of ore deposits is made further than to group under separate heads those deposits which have certain structural conditions in common. Descriptions of prominent mines of various types and forms are presented chiefly to exemplify and enforce the principles herein set forth governing the deposition and occurrence of ores. For this purpose extensively developed properties with a history have been selected because they afford the best opportunities for study. A brief mention of the geology of each region is also given. Ideas, hints, opinions, and facts obtained from many sources have been so interwoven one with another in the subject-matter that individual recognition and credit can seldom be given. On page 341 may be found a partial list of publications and papers which have been consulted. 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.