 | | 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) | | Geology and Pegmatites of the Fourmile Quadrangle, Black Hills South Dakota GEOLOGICAL SURVEY PROFESSIONAL... Geology and Pegmatites of the Fourmile Quadrangle, Black Hills South Dakota By JACK A. REDDEN PEGMATITES..._____________________ Cordierite-biotite and microcline-biotite schists_____________________________..._ ________ Quartz______________ Perthite and microcline. Muscovite. ___________ Other minerals ________...-----Feldspar.-_________----_------------------Beryl-.----------------------------------Lithium mineral |  | | Journal (article/letter/editorial) | | MINERAL LOCATIONS IN THE SOUTHERN BLACK HILLS, SOUTH DAKOTA By ARTHUR SMITH JR., Geologist 152 Wilbur Road...of milky quartz, biotite, muscovite, albite, microcline (usually perthitic), garnet, and minor amounts...Location 1-B: The road to the November Pegmatite Mine is located about 1.2 miles east of the "Needles...southwest (right, coming from the tunnel) up a hill. The mine dumps are about 150 yards up this road to the right...and up on the dumps to the mine located near the top of the hill. The mine consists of a long open-cut |  | | Journal (article/letter/editorial) | | metamorphic rocks in the southern Black Hills, South Dakota JnvrnsJ. Nonrox* Branch of Central Mineral Resources...Center, Denver, Colorado 80225, U.S.A., and South Dakota School of Mines and Technology, Department of...Geology and Geological Engineering, Rapid City, South Dakota 57701,U.S.A. Ansrnlcr The pegmatite field and...Harney Peak Granite of the southern Black Hills, South Dakota, form an igneous system that progrcssesfrom...satellitic plutons in the southern Black Hills, South Dakota, are surrounded by a region containing about |  | | Report (issue) | | Pegmatite Investigations 1942-1945 Black Hills, South Dakota By LINCOLN R. PAGE and OTHERS GEOLOGICAL SURVEY...Descriptions, maps, and diagrams of deposits of mica, beryl, lithium, tantalum, tin, and feldspar UNITED STATES..._______________________ Mining, preparation, and uses of mica. _____________ Mining.___________________________________...Prospecting for mica.___________________________ Beryl deposits.-___.__-_-___--_--__--:_-__-__--_--__ Distribution..._____ Types of beryl deposits_-__-_-_-_--------------__ Structural features of beryl deposits..-.___________ |  | | 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 (article/letter/editorial) | | Hills of South Dakota THOMAS J . C A M P B E L L and WILLARD L . ROBERTS Museum of Geology South Dakota...Dakota School of Mines and Technology Rapid City, South Dakota 57701 more comprehensive description of the...occurrences as the Black Hills area of western South Dakota. These occurrences are quite diverse, ranging...of the CusterKeystone area, to the Homestake gold mine in Lead, to golden barite-bearing concretions east...the recently added South Dakota room in the Museum of Geology at the South Dakota School of Mines and |  | | Journal (article/letter/editorial) | | feldspars from three zoned pegmatites, Black Hills, South Dakota: Implications concerning pegmatite evolution...Mineral Deposits, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701-3995 and J...geochemical study of pegmatites from the Black Hills, South Dakota, indicates potassium feldspar composition is...geochemicaf study of pegmatifes from the Black Nills, South Dakota, potassium feldspars were collected fmm three...Hills pegmatite field: Bull Moose pegmatite, Helen Beryl pegmatite, and Tip Top pegmatite. The intent |  | | Journal (issue) | | Purpurite (Phosphate) From Colorado and Pg 3 South Dakota Pebble Pups Rudist Fossil story Pg 8 Secretary’s...2 PURPURITE (PHOSPHATE) FROM COLORADO AND SOUTH DAKOTA Mike Nelson csrockguy@yahoo.com For my part...opportunity to revisit the Helen Beryl Mine in Custer County, South Dakota, in the Black Hills. I had...graduate student enrolled in the University of South Dakota. I, and a few of my geology friends, initiated...Growing up in Kansas I had never seen the mineral beryl before, let alone spodumene. The trip opened my |  | | Journal (article/letter/editorial) | | The spatial locations for six samples from the Helen Beryl pegmatite were known. The Na/K ratios of their...t h Dakota, and their interpretation The pegmatites in the southern Black Hills region of South Dakota...minerals as reported by Keith & Tuttle (1952). The .Helen Beryl pegmatite was empiaced in quartz-mica schist...enclosing four zones with economic deposits of beryl, mica, K-feldspar, spodumene, and colurnbite-tantalite...the fluid inclusions and whole quartz from the Helen Beryl pegmatite are presented iin Table 1. The analyses |  | | Journal (article/letter/editorial) | | N M O U N T A I N PEGMATITE M I N E , CUSTER COUNTY SOUTH DAKOTA and Arthur Smith Jr. Houston, Texas...about 6 miles west southwest of Custer in the Black Hills of South Dakota (Figure 1 ) . The pegmatite was...the properties of the old Harney Peak Tin Co. The mine was acquired by the Maywood Chemical Company of...them along with the Etta mine in 1961. The mine has produced spodumene, beryl, feldspar, amblygonite,...primarily amphibo- W . L. Roberts Rapid City, South Dakota lite, composed predominantly of small dark |  | | Journal (issue) | | was found in the Hell Creek Formation in North Dakota, a heavily studied formation containing a variety...Montana and stretches into portions of North and South Dakota and into parts of Wyoming ("The virtual fossil‖)...Happenings Pg 3 Pebble Pups—Year End Pg 4 District 11 Honors Pebble Pups Pg 5 Installation of Officers...719-488-0880 or e-mail rsvp@wmmi.org. Western Museum of Mining & Industry / info@wmmi.org // Phone: 719-488-0880...the Family Geology Day at the Western Museum of Mining and Industry in January. The CSMS Pebble Pup table |  | Staatz, M.H., Page, L.R., Norton, J.J., Wilmarth, V.R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. Professional Paper 297c. US Geological Survey doi:10.3133/pp297c | Report (issue) | | Beryllium at the Helen Beryl, Elkhorn and Tin Mountain Pegmatites Custer County, South Dakota GEOLOGICAL SURVEY...Beryllium at the Helen Beryl, Elkhorn and Tin Mountain Pegmatites Custer County, South Dakota By MORTIMER... _ Methods of estimating beryl content _________________ _ Tonnage of beryl-bearing units __________________...___________________________________ _ Helen Beryl pegmatite _____________________________ _ Mine workings ___________...Mineral deposits _______________________________ _ Beryl _____________________________________ _ Feldspar |  | | Report (issue) | | Geology of the Berne Quadrangle Black Hills South Dakota GEOLOGICAL SURVEY PROFESSIONAL PAPER 297-F ... Geology of the Berne Quadrangle Black Hills South Dakota By JACK A. REDDEN PEGMATITES AND OTHER PRECAMBRIAN...-------Feldspar _-_--_--------------_----------Beryl-.---------. ----------------------Lithium minerals...Map showing distribution of zoned pegmatites and beryl-bearing pegmatites in the Berne quadrangle_______...GEOLOGY OF THE BERNE QUADRANGLE, BLACK HILLS, SOUTH DAKOTA By JACK A. REDDEN ABSTRACT The Berne quadrangle |  | | Journal (article/letter/editorial) | | MINERALS FROM ZONED PEGMATITES OF THE BLACK HILLS, SOUTH DAKOTA Peur L. Wnrs, [/. S. Geological Suruey,Washington25...fractional crystallization in a restricted system. Beryl, spodumene, tourmaline, garnet and quartz containing...results were obtained from only three pegmatites. Beryl from inner zones of the Bob Ingersoll No. 1 and...Highland Lode pegmatites gave lower temperatures than beryl from outer zones. The Peerless pegmatite gave results...showed a reverse trend. Temperatures observed in beryl ranged from 216 to 515" C. Results from individual |  | | Journal (article/letter/editorial) | | (6) quartz,spodumene (or petalite),(7) quartz,microcline or perthite,(8) quartz,and (9) lepidoliteor lithian...lithian mica, plagioclase, quartz,microcline. Assemblages $ and 5 are subdividedto showverticalchangesin...The most based on evidence from the Black Hills, South Da- prolificsources of problemshave beenlarge lithium...Lepidolite-plagioclase-quartz 9 Quartz-microcline 10 Microcline-plagioclase-lit hia micas-quartz 11...muscovite 4 Perthite-quartz 5 Perthite- (or microcline-) Victory White Cap X X Buster Highland |  | | Journal (article/letter/editorial) | | 26 March 2015 Reading Pegmatites: PART 1 What BERYL Says DAVID LONDON ConocoPhilips School of Geology...environment in which they form. The series begins with beryl (fig. 1). Some Definitions Many of the finest mineral...alkali feldspar species, sanidine, orthoclase, and microcline, can only be distinguished by diffraction or...feldspar), the K-feldspar phase is ordered, triclinic microcline. Pegmatites are plutonic igneous rocks that are...Crystals of beryl, including some important associations with other minerals. (a) Beryl variety aquamarine |  | | Report (issue) | | Denver, Colorado 9 ^University of South Dakota Vermillion, South Dakota INTRODUCTION This bibliography...references on geology of the Black Hills in South Dakota and Wyoming. For purposes of this report, the... the area does not include the Bad Lands of South Dakota nor the bulk of the Powder River Basin in Wyoming...included in the bibliography. References for South Dakota are more complete than those for Wyoming. Both...geology of the Black Hills National Forest, South Dakota and Wyoming, with a section on Salable commodities |  | | Journal (issue) | | the Geology and Resources of the Black Hills of Dakota with Atlas, Washington. 1879-1880, quarto, pp....used on one other report. where the birds denoted mine villages in a region of Mexico. It predates the...Preliminary Report of Ex plorations in Nebraska and Dakota. in the Years 1855-56-57. Washington. I 875. Oc...Black Hills, and adjacent pans of the Nebraska and Dakota regions was originally as an appendix to the Humphrey...topographic and geographic features from Kansas in the south to the Canadian border on the north. The map extends |  | | Journal (issue) | | the Geology and Resources of the Black Hills of Dakota with Atlas, Washington. 1879-1880, quarto. pp....used on one other report. where the birds denoted mine villages in a region of Mexico. It predates the...Preliminary Report of Ex plorations in Nebraska and Dakota. in the Years 1855-56-57. Washington. 1875. Oc...Black Hills. and adjacent pans of the Nebraska and Dakota regions was originally as an appendix to the Humphrey...topographic and geographic features from Kansas in the south to the Canadian border on the north. The map extends |  | | Journal (article/letter/editorial) | | Copyright © 2003 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/03 $30.00 ⫹ .00 Pergamon...Granite and associated pegmatites, Black Hills, South Dakota—Evidence from fluid inclusions MONA-LIZA C....University Of Missouri–Columbia, Columbia, MO 65211, USA (Received August 29, 2001; accepted in revised form...the Proterozoic terrane of the Black Hills, South Dakota. The aims of this study were to determine the...Central Michigan University, Mt. Pleasant, MI 48859, USA. (mona.sirbescu@cmich.edu). 2443 2444 M.-L. C |  | | Book | | not considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 cm. Biominerals Crystals...periods of stability PLANET | 114 San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 om are uncommon...or etched by corrosive solutions, as occurs with beryl, or they may be fractured by rock movements during...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA » 18 x 24 x 8 om 14 MINERALS: PRODUCTS...10 ct RIGHT: Round brilliant-cut white diamonds, South Africa and Canada « 2.00 ct and 3.06 ct leaves | | | Book | | not considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS...A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...or etched by corrosive solutions, as occurs with beryl, or they may be fractured by rock movements during...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS...10 ct RIGHT: Round brilliant-cut white diamonds, South Africa and Canada « 2.00 ct and 3.06 ct leaves |  | | Book | | what was probably one of the earliest hard-rock mining operations in the world. A necklase with a turquois...ancient workings of turquois were located on the south slopes of the Ali-Mirsa-Kuh mountains near Nishapur...rather convoluted account of the prospecting and mining of this mineral (Pliny, 38:33): "It [cal/aina,...brecciated metamorphosed rock phosphate at Moculta, South Australia Optical constants: Not certain; low birefringence...evaporitic rocks at the Incline, Mariposa County and Big Creek, Fresno County, California. The associated minerals |  | | Journal (article/letter/editorial) | | SCHM(:S. 1985). The pegmatites in the Winnipeg River district occur withln the English River subprovince of...the Proterozoic pegmatites of the Black Hills. South Dakota. Furthermore, Rb-Sr isotopic data were collected...from the Proterozoic Tin Mountain pegmatite of South Dakota. The Cross Lake pegmatite field and the Red...Northern series of Be,Nb.Ta-bearing pegmatites (beryl type), (4) and the Southern series, which ranges...peristerite + columbite-bearing veins (primitive beryl-columbite type) to Li,BeJ$Ta,Sn-enriched pegmatites |
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Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA