Mines and mineral resources of Alpine County, Inyo County, Mono County - Softcover

Eakle, Arthur Starr

Softcover

ISBN 10: 1130896668 ISBN 13: 9781130896664

Verlag: RareBooksClub.com, 2012

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...Gordo Mine (Lead-silver, Zinc). Situated near the summit of Cerro Gordo Peak, 8 miles by road east of Keeler. Elevation 8500 feet. As noted under Cerro Gordo district, the mine is a consolidation of the old Santa Maria and Union mines. Worked continuously from 1869 to 1876, and periodically up to 1907. Subsequently taken over by the Four Metals Mining Company, which erected a smelter east of Keeler and built an aerial tramway from the mine to the smelter. Company went into insolvency and litigation followed. In 1911, L. D. Gordon was granted a lease on all zinc deposits in the mine, and exploitation of the large zinc ore bodies on a commercial basis followed. The Gordon lease was operated continuously until September 18, 1915, and resulted in a large production of zinc ore. Upon the expiration of Mr. Gordon's lease it was taken over by the company and has been operated continuously since. The country rock at the mine is fine-grained white marble, associated with some inter-stratified slate and a number of diorite and porphyry dikes. The lead-silver ore bodies are lenticular masses enclosed in marble! near the contact with the dikes and occasionally have a slate Photo No. 53. Hoisting plant and head of aerial tram of Cerro Gordo Mine, Inyo County. fcotwall. They trend in a general NE. direction, dipping SE. 70 to 80. The San Felipe vein, containing tetrahcdrite, azurite and malachite, in a gangue of quartz and barite, cuts across the lead-silver ore bodies, trending N. 20 W. aiid dipping 70 SW. The zinc ore, smithsonite, forms irregular masses along the limestone footwall of the old lead stopes. Its presence was unsuspected until its discovery in 1907. Development: There are said to be over 28 miles of tunnels and drifts in the Cerro Gordo mine. The ore now ...

Über diese Auflage

• Verlag: RareBooksClub.com
• Erscheinungsdatum: 2012
• ISBN 10: 1130896668
• ISBN 13: 9781130896664
• Einband: Tapa blanda
• Anzahl der Seiten: 52