The first complete guide to all the state s remarkably diverse minerals"

Rockhounding Colorado takes you to 100 of the best rockhounding sites in the state. Search for amethyst and quartz at the Crystal Hill Mine, check out the view at Douglas Pass while looking for leaf imprints and insect fossils, or head to Saint Peters Dome to uncover green, white, and purple fluorite.

Excerpt from Placer Gold Deposits of Nevada Following the discovery of placers at Gold Canyon, placer discoveries in Nevada were broadly in three periods: the 1860's to 1880's, when many small deposits throughout the State were discovered and sporadically worked and several large placers were discovered and extensively worked; the short period between 1906 and 1910, when very rich placers were dis covered at Lynn, Battle Mountain, Manhattan, and Round Mountain; the early 1930's, when economic conditions created by the depression caused a renewed interest in placer mining, and many individuals sought, and a few discovered, new placer areas throughout the State. The location of the placers described in this report is shown on plate 1. Very little factual information can be found about the early periods of placer mining in Nevada. For many placers, the only reports available are hearsay estimates of production and speculations about the extent of the placer ground based on remnants of placer pits, shafts, and other workings. Many of the placers said to have had a high production between 1860 and 1890 were worked by Chinese miners who came to Nevada dur ing the building of the railroads and stayed on to work at mining and other activities. The Chinese were reputed to be secretive with their earnings from the placers and did not ship the gold to the mint by Wells Fargo or other shippers. They worked the gravels very thoroughly in areas where American miners did not wish to expend great labor to win the gold. The placers in the Sierra and Spring Valley districts, Pershing County, were worked by Chinese miners; they have a very high estimated production before 1900 and a comparatively low known production since that time. 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.

The first of John McPhee's works in his series on geology and geologists, Basin and Range is a book of journeys through ancient terrains, always in juxtaposition with travels in the modern world—a history of vanished landscapes, enhanced by the histories of people who bring them to light. The title refers to the physiographic province of the United States that reaches from eastern Utah to eastern California, a silent world of austere beauty, of hundreds of discrete high mountain ranges that are green with junipers and often white with snow. The terrain becomes the setting for a lyrical evocation of the science of geology, with important digressions into the plate-tectonics revolution and the history of the geologic time scale.

A guide for the prospector, providing information on locating lode and placer claims, locating a mill site, tunnel rights, patenting, amending and assessment work on mining claims; list of county recorders; and appendices of laws, notices certificates, and affidavits for the miner. The first edition of Special Publication 6 was published in 1982 and was based mainly on the 1971 Nevada State Mining Laws with a 1983 update sheet reflecting changes made by the 1983 Nevada State Legislature. The second edition, published in 1986, was based mainly on the 1985 Nevada State Mining Laws. The third edition reflected changes made by the 1987 Nevada State Legislature. UPDATED FORMS: The mining claim forms have been revised slightly since this guide was published, and Nevada county offices require the new versions of the forms. You can access those updated forms on the Nevada Division of Minerals website.

Minerals are part of virtually every product we use. Common examples include copper used in electrical wiring and titanium used to make airplane frames and paint pigments. The Information Age has ushered in a number of new mineral uses in a number of products including cell phones (e.g., tantalum) and liquid crystal displays (e.g., indium). For some minerals, such as the platinum group metals used to make cataytic converters in cars, there is no substitute. If the supply of any given mineral were to become restricted, consumers and sectors of the U.S. economy could be significantly affected. Risks to minerals supplies can include a sudden increase in demand or the possibility that natural ores can be exhausted or become too difficult to extract. Minerals are more vulnerable to supply restrictions if they come from a limited number of mines, mining companies, or nations. Baseline information on minerals is currently collected at the federal level, but no established methodology has existed to identify potentially critical minerals. This book develops such a methodology and suggests an enhanced federal initiative to collect and analyze the additional data needed to support this type of tool.

The Silver State has some of the most diverse geology in the United States, and much of it lies in plain sight thanks to the arid climate of the Great Basin. --Publisher.

The collection of natural mineral crystals housed at the Houston Museum of Natural Science is the finest and best known in the world. Now the treasures of this singular collection are shown in resplendent photographs that will seduce both the connoisseur of beauty and the student of natural history.