 | | Journal (article/letter/editorial) | | [University of Connecticut] at 20:42 14 January 2015 South Dakota is perhaps best known for its pegmatites, which...Hills are responsible for the accessibility of South Dakota’s itbundant and diverse mineral locations...secondary phosphate minerals. Although some pegmatite mining for feldspar still continues (Jacobson 1994). the...which has operated for more than 120 years, most mining in the area peaked in the late 1800s and early...and fewer chances to obtain any. However, some mining, mineral exploration, and mineral collecting continues |  | | Report (issue) | | STATE OF SOUTH DAKOTA Nils Boe, Governor MINERALOGY OF THE BLACK HILLS by WILLARD LINCOLN ROBERTS...Associate in Mineralogy Museum of Geology, South Dakota School of Mines and Technology and GEORGE RAPP...Department of Geology and Geological Engineering, South Dakota School of Mines and Technology With the Editorial...Mineralogy South Dakota School of Mines and Technology BULLETIN NUMBER 18 of the South Dakota School of...of Mines and Technology Rapid City, South Dakota PUBLICATIONS STAFF F. L. Partlo J. T. Thomas President |  | | Report (issue) | | GEOLOGY AND ORE DEPOSITS OF TILE LEADVILLE MINING DISTRICT, COLORADO BY S. F. EMMONS, J. D. IRVING,...moraines _ 13 Terminal moraine _14 Ground moraine _ 14 South lateral moraine of East Arkansas glacier _ 14 North_...Sheep Ridge or London anticline _ 61 Goodell or South Nine fault _94 61 Mike anticline _ Origin of the...fold-fault _ Faults in the eastern part of the district 95 62 Kokomo syncline_ Faults southeast_ of _..._ Leadville 62 the_ Fryer Hill folds _ 62 district _ 95 Warping and drag along normal faults, _ _ _ 96 |  | | Conference Proceedings (Volume) | | very north of Sweden. Mining operations started in 1968 and the current mining depth is 430 m. The open...the Bathtub intrusion (Duluth Complex, Minnesota, USA) .. ...............................................Spruce Road deposit, South Kawishiwi intrusion, Duluth Complex, Minnesota, USA . . ....................Complex in the vicinity of the Steelpoort fault, South Africa – petrogenetic implications ...............alteration of the Uitkomst Complex, Mpumalanga, South Africa ........................................ |
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