Download or read book Lode Gold Mines of the Alleghany Downieville Area Sierra County California written by Denton W. Carlson and published by Sylvanite, Incorporated. This book was released on 2016-03-23 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lode Gold Mines of the Alleghany - Downieville Area, Sierra County, California. - Probably one of the best known areas for Gold in all of California, the belt between Alleghany and Downieville has produced and is still producing vast amounts of gold from its hard rock formations. While a lot of placer gold has been taken out as well, it is the hard rock mines and beautiful crystalline gold in Quartz that this area is known for. This publication is also a little know document that is very hard to find as it is buried in another publication. We dug it out and put it back in print. By Sylvanite Publishing.
Download or read book Lode Mining in the Alleghany District of Sierra County California written by U. S. Department Interior and published by CreateSpace. This book was released on 2014-11-01 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mining historian Kerby Jackson introduces us to a classic mining work in this important re-issue of "Lode Deposits of the Alleghany District." Unavailable since 1913, this publication was originally compiled by the United States Department of Interior. Included are insights into the mineralization and other characteristics of this important mining region of Sierra County. Included are details on the history, production and locations of numerous hardrock gold mines in this famous California area, including the Tightner Mine, Minnie D., Osceola, Eldorado, Twenty One, Sherman, Kenton, Oriental, Rainbow, Plumbago, Irelan, Gold Canyon, North Fork, Federal, Kate Hardy and others. This volume also includes important insights into the fossil record, geologic formations, faults and other aspects of economic geology in this California mining district. Note: This edition is a perfect facsimile of the original edition and is not set in a modern typeface. As such, some type characters and images might suffer from slight imperfections or minor shadows in the page background.
Download or read book Mines and Mineral Resources of Sierra County written by Errol MacBoyle and published by . This book was released on 1920 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Facts Concerning the Alleghany El Dorado Mine in the Golden Circle of the Famous Alleghany Mining District Sierra County California written by Harry Lane Englebright and published by . This book was released on 1925 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Roughing it in Gold Country written by William S. Pierson and published by Mountain N' Air Books. This book was released on 1999 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Roughing It in Gold Country" covers nearly sixty-five years of traveling from the southernmost boundaries of the Mother Lode to the north near the Yuba Gap. From the age of sixteen William S. Pierson built on a fascination for the bright yellow metal of the Mother Lode. It happened while he attended Sequoia High School during the Great Depression, while providing for himself by harvesting hay in Mountain City, Nevada, delivering groceries around Tahoe City, and working in a gold mine. He has explored for new treasures from the depths of many mine shafts from Death Valley to the Yuba Gap, from the highest in elevation, the Old Kentucky Mine, to the oldest continuously running gold mine in California, the Sixteen-to-One in Alleghany, California. Writing in a rich and prosaic style, the author describes the fascination for gold that bestows upon its seekers a lifelong desire for its possession.
Download or read book Gold Quartz Veins of the Alleghany District California written by Henry Gardiner Ferguson and published by . This book was released on 1932 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The History of the Gold Discoveries of the Northern Mine s sic of California s Mother Lode Gold Belt as Told by the Newspapers and Miners 1848 1875 written by and published by Trafford Publishing. This book was released on 2000 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the chronological history of the gold rush and gold discoveries from 1848 through 1875, as viewed and reported by the newspapers and miners, on what was called the Northern Mines area of California's Mother Lode Gold Belt. The Northern Mines was that area north of the Cosumnes River, which included Placerville on northward. It included the region containing the South, Middle and North forks of the American River, the Bear River, the South, Middle and North forks of the Yuba River, and the South, Middle and North forks of the Feather River, plus all the other branches and tributaries that ran into the named forks and rivers. This book contains as many newspaper articles that could be found relating to the gold rush days. In using the newspaper articles from the golden era as printed, with their dates, this reveals just when the "New Diggings" as they were called, were found; where they were being made; how rich some of the diggings were; what type of diggings they were; the names of some of the prospectors who found some of the diggings or who were at the diggings and what they were taking out. There are tales of how some of the diggings were found and why some of them received the names they did. The overall purpose of this book is to give a full picture of exactly what was happening to as many different named diggings, locations, camps, and towns that came up in the Northern Mines area, and to give an account of events over at least a certain length of time, exactly as it was reported. To determine from just where each newspaper article within this book comes from, each of the newspaper articles used has first, the date on which it appeared in the newspaper, followed in parentheses by the name of the newspaper from which that particular article was obtained from.
Download or read book Annotated Bibliographies of Mineral Deposits in the Western Hemisphere written by John Drew Ridge and published by Geological Society of America. This book was released on 1972 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold Rush Country written by Oscar Lewis and published by . This book was released on 1957 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidebook to the towns of the gold mining area, with maps, well illustrated.
Download or read book California Journal of Mines and Geology written by and published by . This book was released on 1956 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold districts of California written by William B. Clark and published by William B. Clark. This book was released on 1970 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold districts of California
Download or read book Selected Bibliographies of Hydrothermal and Magmatic Mineral Deposits written by and published by Geological Society of America. This book was released on 1958 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold Mineralization at the Oriental Mine Alleghany California written by Raymond Martin Coveney and published by . This book was released on 1972 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the Oriental mine two productive gold-quartz veins crosscut folded quartzites, amphibolites, granite and serpentinite. Ore occurs in small high-grade shoots close to the serpentinite wall rock. Combined gold and silver contents of the ore shoots are valued between $10,000 and $100,000 per ton. The chief metallic mineral accompanying the gold is arsenopyrite. Graphite is a constant but less abundant associate of the ore. Alteration has accompanied ore deposition and can be divided into two distinct zones: an outer pervasive zone of sericitization and albitization (steatization in the serpentinite) and an inner, more restricted envelope of carbonatization and silica removal. The serpentinite in the mine contains awaruite (FeNi2) whose occurrence is probably related to highly reducing conditions accompanying serpentinization. Mass spectrometric analyses indicate the presence of H2 gas in the serpentinite. It is postulated that H2 from the serpentinite reacted with gold complexes present in the ore fluids to precipitate the gold in the vicinity of that wall rock. Reaction between this gas and the carbonatized wall rock is believed to be responsible for the formation of hydrothermal graphite. Textural studies suggest four intergradational stages of hypogene mineralization: (1) Early stage -- quartz, arsenopyrite and pyrite, (2) Middle Stage -- quartz, carbonate, base metal sulfides and sulfosalts, (3) Ore Stage -- quartz, carbonate, gold and trace tellurides, (4) Late Stage -- pyrite and calcite. Compositions of arsenopyrite formed in the Early Stage are consistent with growth temperatures between 300° and 500°C and total pressures of 0 to 2000 bars. Studies of primary fluid inclusions in quartz and oligoclase, both vein minerals of the Middle and Ore Stages, indicate formation temperatures between 220° and 350°C at total pressures between 800 to 2000 bars. Fluids trapped in Middle and Ore Stage vein and alteration minerals contain approximately 23% CO2. They also contain significant quantities of Na, Al, Mg, Ca and Fe, as indicated by the presence of dawsonite, ankerite and calcite as daughter salts. Freezing temperatures of these fluids are relatively high (above -2°C). It is inferred from field evidence that neither the granite exposed in the mine nor any closely related intrusive could be responsible for the origin of the ore bodies. Estimates of the amounts of material (such as silica) removed from or added to various parts of the vein-alteration system allow for most of the major components to be derived from the country rocks. However, crude calculations based upon assumed original gold contents in the wall rocks are inconclusive as to the source of the gold.
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1968 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Market Reports written by United States. Bureau of Mines and published by . This book was released on with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1965 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chapter of Report of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau written by and published by . This book was released on 1920 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
