› › Geology And Ore Deposits Near Lake City Colorado By John Duer Irving And Howland Bancroft


Geology and Ore Deposits Near Lake City, Colorado

Author : John Duer Irving

Publisher :

Page : 148 pages

File Size : 14,93 MB

Release : 2010-06

Category :

ISBN : 9781932738902

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When Bulletin 478 was published by the United States Geological Survey, the big mines around Lake City, Colorado, had all been discovered and many had been worked for decades. Some of the more famous included the Golden Fleece, Ute-Ulay, Hidden Treasure, Pelican, Black Crooke, and the Golden Wonder. Many more mines had already been abandoned, believed to contain only low-grade ore. However, it was later discovered that rich ore in the Lake City area often lay in pockets surrounded, or hidden as some might say, by low-class deposits. As a result, the writings of John Duer Irving (who investigated the area in 1904) and the writings of Howland Bancroft (who was in the area in 1908) were combined and published in 1911. Both men were well-known and respected Colorado geologists of the time, who published many other works on San Juan mines. Lake City's mining was punctuated with boom and bust cycles up to that time; but much of the development of the local mines and in the local mining districts (the Lake and Galena Districts) is reported in this work, which also includes early maps, photographs, and production figures.





Geology and Ore Deposits Near Lake City, Colorado, Issues 476-479

Author : John Duer Irving

Publisher : Nabu Press

Page : 148 pages

File Size : 11,94 MB

Release : 2014-01-05

Category :

ISBN : 9781294465492

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This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Geology And Ore Deposits Near Lake City, Colorado, Issues 476-479; Volume 478 Of U.S. Geological Survey Bulletin; Geology And Ore Deposits Near Lake City, Colorado; John Duer Irving; Volume 478 Of Bulletin; Geological Survey (U.S.). John Duer Irving, Howland Bancroft, Whitman Cross Govt. Print. Off., 1911 Science; Earth Sciences; Geology; Geology; Mines and mineral resources; Science / Earth Sciences / Geology



Geology And Ore Deposits Near Lake City, Colorado, Issues 476-479

Author : John Duer Irving

Publisher : Legare Street Press

Page : 0 pages

File Size : 30,25 MB

Release : 2022-10-27

Category :

ISBN : 9781016866309

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.







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Author :

Publisher :

Page : 854 pages

File Size : 31,97 MB

Release : 1920

Category : Mineral industries

ISBN :

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Book Description