 | | Report (volume) | | Corundum Deposits of Montana By STEPHEN E. CLABAUGH ^ GEOLOGICAL SURVEY BULLETIN 983 * .^ A description...and associated placer deposits___.______. ______ Yogo sapphire deposit. _________________________________________...occurrences. _-_--_--__--____--____-_-____-__-___ Quartz Gulch _____________________________________________ Pole..._______-_--_______________-_-___-_____-Chouteau County, _________________ _____________-________ Origin...____.__ Origin of the deposits in southwestern Montana.__-.-_---_-_... Hypothesis of igneous origin. ___ |  | | Journal (article/letter/editorial) | | Montana Mineral Locality Index Downloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015...2015 K NOWN AS THE TREASURE STATE, Montana is rich in mineral and gemstone localities. The state motto...The middle third of the state is known as the Montana alkali province where the sediments have MICHAEL...Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded by [University... the Rocky Mountains, and furthest to the northwest, the belt basin. The Rocky Mountains contain sedimentary |  | | Book | | Montana Hodges Robert Feldman Shaded relief indicates terrain and slope. Second Edition Rockhounding...longitude numbers and grid ticks are GPS compatible. Montana Enhanced detail shows more symbols, labels, and...history Cover photos of Montana agate (front) and ammonite imprint (back) © Montana Hodges Cover design by...imprint of The Globe Pequot Press MONTANA Search for stunning Montana agate along the Yellowstone River...paleontologists excavate dinosaurs in Malta. Rockhounding Montana points the way to the best rockhounding in the |  | Filina, Maria I., Sorokina, Elena S., Botcharnikov, Roman, Karampelas, Stefanos, Rassomakhin, Mikhail A., Kononkova, Natalia N., Nikolaev, Anatoly G., Berndt, Jasper, Hofmeister, Wolfgang (2019) Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical, Geochemical, and U-Pb Zircon Geochronological Study. Minerals, 9 (4) 234 doi:10.3390/min9040234 | Journal (article/letter/editorial) | | anorthositic complex is a part of the Tuyuan orogenic belt undergone a multiphase metamorphism of the amphibolite...anorthosite from the Chunky Gal Mountain (North Carolina, USA) [12] with pink-colored corundum is located in association...amphibolites and peridotites within alpine-type orogenic belt [13]. Corundum anorthosites (kyshtymites) are known...for Si, jadeite for Na, orthoclase for K and Al, augite for Ca and Fe, olivine for Mg, rhodonite for Mn...CA, USA) combined with the XSERIES 2 ICP-Mass Spectrometer (Thermo Scientific, Waltham, MA, USA). Trace-element |  | | Report (volume) | | ............................................. Montana ....-.-.--.......................................___..__._....._..._______..__._.____..._.____.' Montana .............................................................................................. Montana ...............................................................-....--......... ..----........ Montana .........'... ................................... II. Outcrop of peridotite at Buck Creek, Clay County, N. C........ III. A, Corundum in chlorite at Corundum |  | | Journal (issue) | | Heinz-Jiirgen Bernhardt, a n d Fred M o u a w a d The Yogo Sapphire Deposit Keith A. ~ ~ c h a l u k NOTES...occurrence of sapphircs and zircons of the Jemaa district, in central Nigeria. We coinpared the Jenlaa alkali...ruby froin Sri Lanlta and a blue sapphire from Montana (Beran, 1991), and in untreated blue Australian...in tlie spectra of flux-grown synthetic rubies (Belt, 1967; Volynets et al., 1972; Peretti and Smith...Vemeuil- and hydrothermally grown synthetic ruby, see Belt (1967),Beran (1991),and Peretti and Smith (1993 |  | | Report (volume) | | sapphires^......... ..........._............. ...... Montana sapphires ........ ..............................sapphires ...... _........................... Yogo Gulch sapphires ............................. ............................. ................. Macon County .........._. ...........,..-...........-.............. .......... .1...................... Clay County.. ...............................................tracts...................... ......... Jackson County ................ ............................. |  | | Journal (article/letter/editorial) | | specimen from the railway cutting south-east of Little Arnage is of considerable interest as throwin g...biotite, iron-ores, green spinelle, and probably a little felspar, was analysed. It contained, as might naturally...the Burma rubies and is a marked feature of the Montana" sapphires." A very interesting case of the occurrence...the same relation to the alpine folds of the mountains of Andalusia as do the volcanic rocks of the northern...schists. In rocks of the first group, which show little or no alteration by heat, the cordierite is clear |  | | Book | | ROADSIDE % JEOLOGY of Montana David Alt and Donald W. Hyndman ROADSIDE N JEOLoGY of Montana David Alt Donald...Roadside geology of Montana. Bibliography: p. Includes index. 1. Geology — Montana — Guide-books. I. Hyndman...know something about the rocks and landscapes of Montana. We hope our professional colleagues will enjoy...dealing with the four major geologic provinces in Montana. Each starts with its own more specific narrative...Nearly every geologist who has ever worked in Montana contributed something to this book. We read almost |  | | Book | | RWH PUBLISHING ~ }OB 28:18 BOULDER, CO LORADO USA 1997 ~ © 1997 by Richard W. Hughes All rights...Publishing 4946 Clubhouse Circle Boulder, CO 80301-3725, USA Tel: 303-530-7975; Fax: 303-530-7975 Publisher's...States of America (USA) 454 382 Idaho 454 Bibliography-Idaho 454 Montana 454 Yogo G ulch 454 Other Moncana...localities 460 Characteristics of Montana coru.ndwns 465 Bibliography-Montana 469 North Caroli na 472 Bibl...473 History 474 Luc Yen 474 Quy Chau (Bu Khang District) 475 Other Vietnam corundu.n1 localities 478 Mining |  | | Book | | India, Australia, Kenya, Tanzania, Montana and North Carolina (USA), Nigeria, Afghanistan, Pakistan, Laos...Bariand, Urs Zwyssig, Donna Dirlam, John Koivula, Judith Kinmond, and Rita Pascolini. A special thanks is...India 92 Sapphire - Australia 94 Sapphire - Montana, USA 96 Ruby - Kenya 97 Sapphire - Umba Valley, Tanzania...Bibliography 300 Montana, USA 300 Yogo Guieb 301 Mineralogy of the Yogo sapphire 304 Other Montana corundum localities...309 Chapter 1 History of corundum In the mountains of Serendib (Ceylon) precious stones are found |  | | Book | | associated with the Montana Bureau of Mines, mineral dealers and miners from MT, USA, sapphire fields. The...limited sources in Montana, USA. Transitional pink sapphires from Sri Lanka and Montana were also present...Thailand/Cambodia, Sri Lanka, Mogok, Myanmar and Montana fields. The gemstones were largely recoveries from...from eluvial and alluvial deposits, with some Yogo, Montana, stones related to a primary deposit [11]. Analytical...polysynthetic twinning, common in sapphires. Montana, USA, sapphire and ruby suites cover a number of |  | | Report (volume) | | formations and outliers of the Ottawa Paleozoic basin [Canada]. Can. Eoy. Soc. ; Proc. and Trans., 2d...Ordovician and Silurian systems occurring in the Ottawa basin. 22 - Contribution to the paleontology of the...various localities. 23 Andersen (Carl). The mineral belt of the Mogollou range [New Mexico]. Bug. and Mg...[Review of "Geology of Castle Mountain mining district, Montana," by W. H. Weed and L.V. Pirsson.j Jour, of..., vol. v, p. 852, 1897. x 33 Geology of Polk County, Iowa. Am. Geol., vol. xx, p. 334 (f p.), 1897 |  | | Book (edition) | | from the Tourmaline Q ueen .1ine, Pala, San Diego County, California. From a pen-and-ink drawing by W. E...Leonard Enos, J. A. Ferguson, George M. Francis, Judith W. Frondel, Charles W. Fryer, R. Gordon Gastil...Sphene, Augelite, Scheelite, Diopside, Tremolite, Augite, Scapolite, Tugtupite, Hemimorphite, Legrandite...Corundum Hill, North Carolina 7. Eldorado Bar, Montana 8. W. D. Baltzley 9. Ellis mine pocket, Hiddenite...California 19. Sequist Ranch topaz area, Texas 20. Little Three mine, Ramona, California 21. Gem-bearing |  | | Book (volume) | | brownish yellow octagonal calcite (21.30 ct), Montana; light yellow orthoclase feldspar (25.03 ct), Idaho;...Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...oligoclase feldspar (5.04 ct), Oregon; and three Montana sapphires, violetish blue (2.52 ct), yellow (4...large-scale mining of sapphire-bearing gravels in Montana is beginning and is expected to produce large quantities |  | | Report (volume) | | Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER UNITED STATES...Sedimentary rocks.....__.___._____.____-...---__-_-._____ Belt series (Algonkian)._______________________________...______________________-__-_________--_------___-_ Ophir district.________________________________________________...__________---__--_-___ Austin district._.____..._..._._.____._____.____.___-.___._____ Marysville district.___________...___________________________________________ Gould district._______________________________________________ Stemple |  | | Journal (issue) | | reportedly from the Kuh-iLal deposit in the Pamir Mountains of Tajikistan. p. 330 REGULAR FEATURES 337 354...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA © 2022 Gemological Institute of America All rights...spinel reportedly from Kuh-i-Lal in the Pamir Mountains of Tajikistan. To determine the cause of color...Enstatite Fe sulfidesa a Rutile Occasional Diopside-augite Coesite Kyanite Coesite — Olivine Corundum...study of ruby (corundum) compositions from the Mogok Belt, Myanmar: Searching for chemical fingerprints. American |  | | Journal (issue) | | FEDERATION OF MINERAL SOCIETIES FEATURES Montana'• Famed Yogo Gulch by Beatrice J. Johnson ................Texas 78204 Mlcrocry•tal Collectlng In Keweenaw County, Michigan by Jean R. Rentmeister ................Smiths, New York 12970. NFMS - Henry Pope. Loma. Montana 59460. RMFMS - Evelyn Schafer, 3229 N. 60 St.....CA. Host, Gem and Mineral Society ol San Mateo County. H.B. Murnan, P.O. Box 53, NAS Mollett Field, CA...Mineralogy Society. Annual Show. Benton-Franklin County Fairgrounds. Kennewick, WA. 10-10 and 10-6. Donald |  | | Journal (article/letter/editorial) | | and State University, Blacksburg, Virginia 24061, USA 128 Cs. Szab6 et al. /ihnlich. Der Karbonatitgang...radial, elongated micas and Ti-augites with aegirine-augite rims (Fig. 2C, and Fig. 2D). The presence of such... . . . . i i 0.4 . . . i 0 0/....0~ Yogo lamprophyre ~ . D ,. • 0.3 "~ 0.2 ...-°" •...located between the 1Ti: 2AI(IV) line and the field of Yogo lamprophyre (Meyer and Mitchell, 1988), whereas...pressure at around 1000 °C. The aegirine--aegirine-augite is a late-stage component and was formed from a |  | | Journal (issue) | | chemical composition. 370 Alluvial Sapphires from Montana: Inclusions, Geochemistry, and Indications of a...Robert E. Kane Guanghai Shi London, UK Helena, Montana Beijing, China John L. Emmett Stefanos Karampelas...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA © 2015 Gemological Institute of America All rights...conditions. Alluvial sapphires from the U.S. state of Montana have long been celebrated for their kaleidoscope...rugged fringes of Australia’s arid Great Artesian Basin: Lightning Ridge, Koroit, Yowah, and Quilpie. Their | | | Book (volume) | | Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...oligoclase feldspar (5.04 et), Oregon; and three Montana sapphires, violetish blue (2 .52 et), yellow (4...large-scale mining of sapphire-bearing gravels in Montana is beginning and is expected to produce large quantities...c1ystals, many of facet-grade, found in the Wah Wah Mountains of Utah are to be mined by conventional open-pit...discovery and production in the continent, there is little doubt that many regions remain unexplored because |  | | Report (volume) | | corundum belt of North Carolina. General geology of the State. Geology of the corundum belt. Rocks of...of the corundum belt. 21 21 23 26 Chapter II.—The peridotites and associated basic magnesian rocks.... Clay County. Macon County. Jackson County. Transylvania County. Swain County. Haywood County. Buncombe...Buncombe County . Madison County. Yancey County. Mitchell County . Watauga County . Wilkes County. Ashe County...County . Alleghany County . Physiography and ecology of the peridotites. 28 28 29 32 34 35 36 38 42 46 |  | | Book (volume) | | California and Maine, the sparkling sapphires of Montana, and the jades of Alaska, British Columbia,...with digging vast quantities of coal, leveling mountains of iron ore, and tapping subterranean lakes of...are primarily cut as gemological curiosities with little or no regular place in commerce. Coarser gemstones...Kansas, Alabama, Ohio, Oklahoma, Arkansas, Wyoming, Montana and Illinois. Detailed information on the State...Inc., formerly of Helena, Montana, supplied data on the production of Montana alluvial sapphires. Oregon |  | Kislov, Evgeniy V., Aseeva, Anna V., Vanteev, Vladislav V., Sinyov, Anton Yurievich, Eliseeva, Olga A. (2022) Naryn-Gol Creek Sapphire Placer Deposit, Buryatia, Russia. Minerals, 12 (5) 509 doi:10.3390/min12050509 | Journal (article/letter/editorial) | | associates with large crystals of garnet, spinel, augite, olivine, enstatite, ilmenite, Ti-magnetite, and...enstatite (Figure 9e); and clinopyroxene by Ti-bearing augite (Figure 9f). Large silver-black ilmenite, on the...[18] determined the lava age of the Dzhida River basin using the 40 Ar-39 Ar method. The results indicate...crystals of pyroxene, represented by Ti-bearing augite, are extremely rare. Figure 10. “Valley” volcanic...Phenocrysts are mainly represented by Ti-bearing augite. It forms elongated crystals identified by a typical |  | | Book | | REMARKABLE MINERAL LOCALITY AT BRANCHVILLE, IN FAIKFIELD COUNTY, CONNECTICUT ; WITH A DE- SCRIPTION OF SEVERAL...SAN BERNARDINO By J. H. Pratt AND HANKSITE FROM COUNTY, CALIFORNIA. ON WELLSITE, A NEW MINERAL. J. ...HAMLINITE AND ITS OCCURRENCE WITH BERTRANDITE AT OXFORD COUNTY, MAINE. By ON 287 S. L. Penfield CLINOHEDRITE...THE HIGHWOOD MOUNTAINS OF MONTANA. By L. V. Pirsson 415 PETROGRAPHY OF THE ROCKS OF YOGO PEAK. 436 ...Pirsson A NEW LEUCITE ROCK FROM THE HIGHWOOD MOUNTAINS OF MONTANA. By Walter H. Weed and Louis V. MISSOURITE |
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