| ![]() The 2022 Arizona Geological Society Spring Field trip, “Mountains, Mines and Structural Settings of the North and Central Altar Valley, Coyote Mountains to Sierrita Mountains, Pima County, Arizona” was held April 16. Forty-two people attended the day long field trip led by Jay Chapman, Assistant Professor, University of Wyoming and Dan Aiken. Starting and ending at the historic King’s Anvil Ranch in the Altar Valley, poster sessions were held at four additional sites with outcrops to view and collect samples. Other speakers included Phil Pearthree, Gordon Haxel, Larry Dykers, Linda Sheehan, Laural Goodwin, John Stitzer, Stephen Richard, Floyd Gray and Bob Schmaltzel. All of those participating enjoyed the great field trip and look forward to attending another AGS field trip this fall. We wish to thank our sponsor, Skyline Assayers and Laboratories and the King family for allowing us to use their ranch for parking and presentations. Dr. Tim Marsh’s ZOOM presentation to AGS & friends is now accessible at the Arizona Geological Survey’s Youtube channel, (https://www.youtube.com/watch?v=doEOcnWh-C4). Tim, CEO/President of Bell Copper Corp., delivered the presentation to ~75 AGS members & friends on Tues., 6 Sept. 2022. On behalf of AGS members, the AGS Executive Committee thanks Tim Marsh for an excellent talk.
Copies of both hardback and paperback versions of this publication can be purchased from Amazon.com. Old Dominion Mine and Smelter, circa 1901 The Arizona Geological Survey has recently published a Contributed Report, Geology and History of the Globe-Miami Mining Region, Gila and Pinal Counties, Arizona, which examines the economic geology, ore production and mining history of the Globe-Miami area. The Globe-Miami mining region of Gila and Pinal Counties comprises the northwest vertex of Arizona's Copper Triangle. Copper production from the Copper Triangle totals about 37.3 billion pounds, or 13.6% of the total historic U.S. copper production. Globe-Miami encapsulates four separate mineral districts renowned for their copper mineralization and production. ![]() Rhodochrosite of Sweet Home Mine & Detroit City Portal - Blog/video The Arizona Geological Society’s (AGS) first virtual evening presentation was a smash hit. More than 100 people ZOOMed in on the evening of 5 May 2020 to see geologist Phillip Perrson tell the story of the origin and mining history of rhodochrosite and associated Pb, Ag, Zn sulfides, tetrahedrite, and fluorite from Colorado’s renowned Sweet Home Mine and the newly opened Detroit City Portal. Visit the Arizona Geology blog for a primer on one of the world's great rhodochrosite mines. There is a link, too, to the entire 55-minute presentation To go directly to the 55-minute ZOOM presentation at AZGS Youtube channel. Articles contained within the Arizona Geological Society Digests 1 through 22 are now available on-line at our publications page. Our out-of-print Digests are available to the public, While our in-print Digests are only accessible to AGS members. Anyone who is interested in purchasing Printed Copies of In-Print AGS Digests can do so on-line or contact the AGS Secretary for more details. Copies of current AGS Guidebooks and Digests are also for sale at a reduced price at AGS monthly dinner meetings. |
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