Excerpt from The Copper-Bearing Rocks of Lake Superior III. - Thin sections of olivine-gabbros fig. 1.-from bed of French River, Minn. N. Line, N. E. Sec. 7. T. 51, R. 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.

Excerpt from The Copper Mines of Lake Superior Copper mining on Lake Superior commenced in 1845, about twenty-eight years since. Prior to this date copper had been Obtained throughout the world in the form of sulphuret. The discoveries 'of Lake Superior were of native copper, which was a novelty in copper mining, and so improbable, according to all geological precedents, that much doubt was expressed by scientific men in regard to its reality. The facts were, however, abundantly proven. The distribution of this native copper, which seemed such a geological wonder, was principally in masses of various weight barrel work, which is strung together in adhering rock, like roots of a tree in the soil, and stamp stuff, which is disseminated through the copper bearing rock in small particles, known among miners as shot copper. In these three forms the native copper of Lake Superior is distributed. 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.

This must-have guide for Michigan, Minnesota, Wisconsin, and Ontario features full-color photographs and information to help readers identify rocks and minerals. Get the perfect guide to rocks and minerals of the Lake Superior region! With the new edition of this famous guide by Bob Lynch and Dan R. Lynch, field identification is simple and informative. This book features comprehensive entries for 75 rocks and minerals, from common rocks to rare finds. That means you’re more likely to identify what you’ve found. The authors know rocks and took their own full-color photographs to depict the detail needed for identification—no more guessing from line drawings. The entries are organized by area, so you can find rocks unique to each state or common to all three. The field guide’s easy-to-use format helps you to quickly find what you need to know and where to look. Inside you’ll find: 75 specimens of the Lake Superior region Quick Identification Guide: Identify rocks and minerals by color and common characteristics Range/occurrence maps to show where each specimen is commonly found Professional photos: Crisp, stunning images This second edition includes updated photographs, expanded information, and even more of the authors’ expert insights. With this book in hand, identifying and collecting is fun and informative.

In 'Michigan's Copper Country in Early Photos' by B. E. Tyler, readers are transported back in time to the boom days of the copper mining industry in the late 19th and early 20th centuries. The book is a carefully curated collection of historic photographs that visually document the rise of this industry in Michigan's Upper Peninsula. Tyler's writing style is concise and informative, providing context for each photograph while allowing the images to speak for themselves. The book offers a unique glimpse into a pivotal era in American industrial history, shedding light on the lives of the men and women who worked in the mines and the communities that grew up around them. Tyler's attention to detail and dedication to preserving this important history make 'Michigan's Copper Country in Early Photos' a valuable addition to any historian's library. Scholars of American industrial history, photography enthusiasts, and anyone interested in the rich tapestry of Michigan's past will find this book both enlightening and engaging.