 | | 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...except for the Homestake mine, which has operated for more than 120 years, most mining in the area peaked in...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 |  | | Journal (issue) | | call for appointment Tourmaline Tourmaline Queen Mine Pala, California NEW ACQUISITIONS: RUTILE from...the Department of Geology of the University of South Caro lina in Columbia. It was a pleasant and exhilerating...Department of Geology Museum, University of South Carolina, Columbia, South Carolina. Perhaps the collection, begun...hiddenite specimens in his collection from Alexander County, North Carolina, and those superb quartz crystal...surprisingly good specimens. Nowadays the University of South Carolina’s collection cannot be classed as one of |  | | Journal (article/letter/editorial) | | analyses of Colorado triplites are presented; two are high in Mg. Apparently the only valid species formed...granitic pegmatites and three types of hydrothermal, high temperature veins. INtnopucrroN Previous to the...study of the pegmatites of Eight Mile Park, Fremont County, Colorado, the writer described several new triplite...Mica Lodge pegmatite, Eight Mile Park, Fremont County, Colorado. 1a. Molecular ratios. 16. Molecular...School Section pegmatite, Eight Mile Park, Fremont County, Colorado. 2o. Molecular ratios. 2b. Molecular |  | | Report (issue) | | Pegmatite Investigations 1942-1945 Black Hills, South Dakota By LINCOLN R. PAGE and OTHERS GEOLOGICAL SURVEY..._______________________ Mining, preparation, and uses of mica. _____________ Mining.___________________________________...mines and prospects___________________ 60 Addie tin mine._________________________________ 60 Ajax claim...___________60 Aladin mica mine by J. W. Adams____________ 60 Ann mica mine by T. A. Steven_________________...Steven_________________ 61 Antler mica mine.._-___--__--__-___-_-_-___-___ 64 Apex claim.___-__________-_-----_---_--_-____64 |  | | Journal (article/letter/editorial) | | and thus for the second consecutive year a new high record is set. The chart showing the trend in membership...September-October issue. In the past, due mainly to the high cost of this type of reproduction, the Society's...Harvard University, was responsible for the very high peak reached in 1937. It may be of some interest...geological studies in both field and Iaboratory. Mining geologists have made valuable paragenetic studies...of the series were lormed at Hobart Butte, Lane County, Oregon, probably in Miocene time by hydrothermal |  | | Report (issue) | | dwindling sources of petroleum. Because of their high energy and their power potential per unit weight...pegmatites, such as those in the Black Hills of South Dakota, (Page and others, 1953). Increased demand for...field that had been discovered by the Leprechaun Mining Company at Clayton Valley, near Silverpeak, Nevada...Company, more than 90-percent owned by Newmont Mining Company of Danbury, Conn. Both are integrated companies...includes the Bikita mine in Zimbabwe (Rhodesia), the Karibib-Omaruru area in South-West Africa, U.S.S |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...than the general form. The most commonly encount a high with planes to with relatively simple Miller indices...diamond, other materials of high index of refraction, and usually of high density; Index of refraction...10. India 11. South east Asia 12. Middle East 13. African Countries, from north to south 14. Oceania 15...15. Australia 16. Antarctica 17. South America The localities section includes a description of the |
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