|LC Classifications||QE 203 S698 G618 1998|
|The Physical Object|
|Pagination||252 p. + 2 plates|
|Number of Pages||252|
ISBN: OCLC Number: Notes: "Geologic-mining map of Northwestern Sonora, plate 1"--Map. Accompanying map and chart on 2 folded sheets in back pocket. Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more. GOLD DEPOSITS OF NORTHERN SONORA, MEXICO Edited by K.F. Clark WHY EITiro ~ ~ Cerro Colorado SONORA ARIZONA lWiJ':J?l. Presa • -~/Novil/o \ ~!: • JONOCHI):a.. S! I Guidebook Prepared for the Society of Economic Geologists Field Conference October Series Editor: Tommy B. Thompson SOCIETY OF ECONOMIC GEOLOGISTS. The complex geology of northern Sonora has a variety of environments suitable for gold mineralisation, and many of the gold prospects occur within or adjacent to the southwestern boundary of the megashear in Precambrian, Mesozoic and Tertiary rocks. The characteristics types of gold deposits have been delineated by reconnaissance field investigations of the authors.
La Herradura is a structurally controlled gold deposit located in northwest Sonora, México. Minera Penmont, S. A. de C. V., a joint venture between Servicios Industriales Peñoles, S. A. de C. V., and Newmont Gold Company manage the project. In regional exploration led the Penmont Venture to claim the area ofthe deposit. Mexico's Rich Geologic Past Holds the Key to Prolific Gold Deposits Investing News Network - October 3rd, The majority of gold mined in Mexico is as a co-product, first, of silver, and. Another outstanding guide by Delos Toole - essential for Nevada gold nugget hunting. This book is an " x 11" paperback with pages loaded with topographic maps, gold placer mining districts, directions, even more maps, and lots of other useful information. Click here for more information. The majority of the known orogenic gold deposits in Mexico are located in northern Sonora. This type of ore deposits has become one of the most important in terms of gold production in the country during the last decades, provided that the combined reserves and extraction in these deposits have generated resources of more than 10 Moz Au.
Most placer gold deposits in New Mexico are derived from gold-bearing mineralized areas in Tertiary intrusive rocks, and occur in gravels of alluvial fans, gulches, and rivers adjacent to the source. A few deposits are derived from gold-bearing Pre- cambrian crystalline or Tertiary volcanic rocks. Given that gold was so abundant in the California sierra, to many of the gold seekers, it seemed logical to suppose that it should also be plentiful in the mountain and desert regions of northwestern Mexico. They hoped that gold deposits equal or superior to those of California might be found and exploited in Baja California and Sonora It was. The western Cerros El Amol near Altar, northwest Sonora, Mexico, is underlain by a 5- km-thick clastic sedimentary sequence, of which, the upper part has been metamorphosed into greenschist facies. The stratigraphic column includes, in ascending order, the Bisbee Group, El . Gold mining in Mexico has taken place for at least years, and the country has a history of both commercial and artisanal production. Today, gold and silver account for more than 50 percent of.