 | | Journal (article/letter/editorial) | | of sapphires from a lamprophyre dike atYogo Gulch,Montana,USA:Clues from their melt inclusionsAaron...of sapphires from a lamprophyre dike atYogo Gulch,Montana,USA: Clues from theirmelt inclusions, LITHOS...Origin of sapphires from a lamprophyre dike atYogo Gulch,1RIAaron C. Palke1*, Nathan D. Renfro1...SC*aaron.palke@gia.eduMontana Bureau of Mines and Geology,Montana Tech, 1300 West Park Street...Street, Butte, MTNU2PTMontana,USA: Clues from their melt inclusions59701MAABSTRACTGem corundum |  | | Journal (issue) | | WASHINGTONMay 2, 20099:00 am to 5:00 pmClarkCounty P. U. D. Building1200 Fort Vancouver WayVancouver...Howard 3Some Zeolite Locations inMontanaPart 4 - EasternMontana - SouthLarry B. FrenchHC 46 Box...Box 7204Miles City, MT 59301In southeasternMontana, zeolites occur in three different geologic settings:...bentonite deposits, lignite deposits, and Tertiarybasin-filling sedimentary rocks. 2) As primary and secondary...specimens in theMontanaMineral Museum (MTMM) atMontana Tech.AnalcimeCarbonCounty: Sedimentary rocks |  | | Report (issue) | | Corundum DepositsofMontanaBy STEPHEN E. CLABAUGH^GEOLOGICALSURVEYBULLETIN983*.^A description...and associated placer deposits___.______. ______Yogo sapphire deposit. _________________________________________...occurrences. _-_--_--__--____--____-_-____-__-___QuartzGulch _____________________________________________Pole..._______-_--_______________-_-___-_____-ChouteauCounty, _________________ _____________-________Origin...____.__Origin of the deposits in southwesternMontana.__-.-_---_-_...Hypothesis of igneous origin. ___ |  | | Journal (article/letter/editorial) | | Melt inclusions in alluvial sapphires fromMontana,USA: Formation ofsapphires as a restitic component... Meltinclusions in alluvial sapphires fromMontana,USA: Formation of sapphires as a restiticcomponent...MANUSCRIPTMelt inclusions in alluvial sapphires fromMontana,USA:PTFormation of sapphires as a restitic component...Drive, Carlsbad, CA 92008,USA2Montana Bureau of Mines and Geology,Montana Tech, 1300 West Park Street...Street, Butte, MT 59701,USAMA*aaron.palke@qm.qld.gov.au†Present address:DQueensland Museum, Brisbane |  | Palke, Aaron C., Wong, Jacqueline, Verdel, Charles, Ávila, Janaína N. (2018) A common origin for Thai/Cambodian rubies and blue and violet sapphires from Yogo Gulch, Montana, U.S.A.?.American Mineralogist, 103 (3) 469-479doi:10.2138/am-2018-6164 | Journal (article/letter/editorial) | | rubies and blue and violet sapphires fromYogoGulch,Montana, U.S.A.?Aaron C. Palke1,2,3,*, Jacqueline...in blue to reddish-violet sapphires fromYogo Gulch,Montana, U.S.A., with rubies from the Chantaburi-Trat...The similarities between Thai/Cambodian rubies andYogo sapphires suggest a commonorigin for gem corundum...used with caution.Keywords: Sapphire, ruby,Yogo Gulch, melt inclusions, corundum, gemologyIntroduction... 470PALKE ET AL.: THAI/CAMBODIAN RUBIES ANDYOGO GULCH, MT SAPPHIRESbetween the two countries. The |  | | Journal (issue) | | area, SanAmerica’s Royal Gems –Montana andYogo SapphiresBenitoCounty, California; the group of sapGems...Mountain Mine, GranTantalizing Turquoiseite Country,Montana. Photos of gemstonesOregon Sunstone – A Rare and...Daniel Bronfen, BrazilEvan Caplan,USARocco Gay, ItalySushil Goyal,USAShahina Hatta, Hong KongDwarka...ThailandImmediate Past PresidentBenjamin Hackman,USAChief Executive OfficerGary RoskinICA General Manager...31 W. 47th Street, Suite 1103New York, NY 10036USAica@gemstone.orgT: 1.212.620.0900F: 1.212.352.9054 |  | | Journal (issue) | | Black Diamonds from ZimbabweCharacterization ofYogo SapphiresSynthetic Diamonds Chart 2018 GIA SYMPOSIUM...pg. 113111Summer Reading: Diamond Research,Yogo Sapphire, and Byzantine GarnetDuncan PayFEATURE...Gemological Characterization of Sapphires fromYogo Gulch,MontanaNathan D. Renfro, Aaron C. Palke, and Richard...E. KaneJames E. ShigleyLondon, UKHelena,MontanaCarlsbad, CaliforniaJohn L. EmmettStefanos...the CoverFor more than 120 years,Yogo Gulch in centralMontana has been one of the world’s most illustrious |  | | Journal (article/letter/editorial) | | Montana Mineral Locality IndexDownloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015...2015KNOWNAS THETREASURE STATE,Montana is rich in mineral and gemstone localities. Thestate motto...The middle third of the state is known as theMontana alkali province where the sediments haveMICHAEL...Indian Queen mine ca. 1905 at Farlin, BeaverheadCounty.208ROCKS & MINERALS Downloaded by [University... the RockyMountains, and furthest to the northwest, thebeltbasin. The RockyMountains contain sedimentary |  | | Journal (issue) | | Heinz-Jiirgen Bernhardt,a n d Fred M o u a w a d28TheYogo Sapphire DepositKeith A. ~ ~ c h a l u kNOTES...occurrence of sapphircs and zircons of the Jemaadistrict, in central Nigeria. We coinpared theJenlaa alkali...ruby froin Sri Lanltaand a blue sapphire fromMontana (Beran, 1991),and in untreated blue Australian...in tliespectra of flux-grown synthetic rubies (Belt, 1967;Volynets et al., 1972; Peretti and Smith...Vemeuil- and hydrothermally grown synthetic ruby, seeBelt (1967),Beran (1991),and Perettiand Smith (1993 |  | | Report (issue) | | Majumder, MBMG.Montana Mining and Mineral Symposium 2021September 9–September 11, 2021Montana Bureau of...Publication 123,Montana Mining and Mineral Symposium 2021UUNO SAHINEN MEDALLION AWARDTheMontana Bureau of...of Mines and Geology atMontana Tech has named John F. Childs the recipient ofthe 2021 Uuno Sahinen Silver...of energy, mineral, or groundwater resources inMontana” andis awarded each year.Childs earned a BSc...Town, Elkhorn, MT. Photo by Chris Gammons.ii Montana Bureau of Mines and GeologyTABLE OF CONTENTS |  | | Report (issue) | | SymposiumMay 8–10, 2015Montana Bureau of Mines and GeologyButte,Montana TABLE OF CONTENTSForeword...Cretaceous ElkhornMountains Volcanics of Southwestern MTKaleb C. Scarberry,Montana Bureau of Mines and.................................. 8Minerals ofMontana, A Journey Across the Treasure StateMichael J...AuriferousGravels Derived from the ButteDistrict,Montana—A Consequence of Regional Tectonicsand Early................... 25Boron Minerals of WesternMontana—Occurrences and Ore Deposit ModelsBruce E. Cox |  | | Journal (issue) | | minerais contained in eluvial placers are not orLittle transported and the mother-rocks of the gemstones...several types of deposits are mixed in a singlebasin. The study of the gemmological characteristics,...formés : - dans des roches ignées intrusives (Yogo Gulch,Montana, Etats-Unis) ou extrusives (basaltes alcalins)...PLUMASITES Ourals polaires INTRUSIONS MAFlQUESYogo Gulcb ANATEXITES \1oro 'll l Ratnapun GRANITOÏDES...intrusives mafiques ' Le gisement de saphirs deYogo Gulch,Montana (Etats-Unis ; figure 2), tout comme celui |  | | Book | | }OB 28:18RWH PUBLISHING ~ BOULDER, CO LORADOUSA ~1997 © 1997 by Richard W. HughesAll rights reserved...Publishing4946 Clubhouse CircleBoulder, CO 80301-3725,USATel: 303-530-7975; Fax: 303-530-7975Publisher's...States of America (USA) 454382Idaho 454Bibliography-Idaho 454Montana 454Yogo G ulch 454Other Moncana...localities 460Characteristics ofMontana coru.ndwns 465Bibliography-Montana 469North Caroli na 472Bibl...473History 474Luc Yen 474Quy Chau (Bu KhangDistrict) 475Other Vietnam corundu.n1 localities 478Mining |  | | Book (volume) | | brownishyellow octagonal calcite (21.30 ct),Montana; light yellow orthoclase feldspar (25.03 ct), Idaho;...Colorado; colorless scheelite (19.66 ct), KernCounty, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San BenitoCounty, California, consisting of 52 benitoites and 75...oligoclase feldspar (5.04 ct), Oregon; and threeMontana sapphires, violetish blue(2.52 ct), yellow (4...large-scale mining of sapphire-bearing gravels inMontana is beginning andis expected to produce large quantities |  | | Book (edition) | | from the TourmalineQ ueen .1ine, Pala, San DiegoCounty, 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...Corundum Hill, North Carolina7. Eldorado Bar,Montana8. W. D. Baltzley9. Ellis mine pocket, Hiddenite...California19. Sequist Ranch topaz area, Texas20.Little Three mine, Ramona, California21. Gem-bearing...of tourmaline crystal forms38. Map of San DiegoCounty, California gem sources3 9. Stewart Lithia· and |  | | Journal (article/letter/editorial) | | andState University, Blacksburg, Virginia 24061,USA 128Cs. Szab6 et al./ihnlich. Der Karbonatitgang...cleavage planes. Inthe groundmass, feldspar andanalcime can be easily recognized, as well as opaqueminerals... dolomite), radial,acicular micas, sanidine,analcime, and a few grains of opaque minerals (Fig. 2E).......ii0.4...i0 0/....0~Yogo lamprophyre~.D,. •0.3"~ 0.2...-°" •...located between the 1Ti: 2AI(IV) line and the field ofYogo lamprophyre (Meyer and Mitchell, 1988), whereas |  | | Journal (issue) | | FEDERATIONOF MINERAL SOCIETIESFEATURESMontana'• FamedYogo Gulch by Beatrice J. Johnson ................Texas 78204Mlcrocry•tal Collectlng In KeweenawCounty, Michiganby 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 MateoCounty. H.B.Murnan, P.O. Box 53, NAS Mollett Field, CA...Mineralogy Society. Annual Show.Benton-FranklinCounty Fairgrounds. Kennewick, WA.10-10 and 10-6. Donald |  | | Report (issue) | | Butte–DeerLodge Area,MontanaRichard B. BergSapphires in the Butte–Deer Lodge Area,MontanaRichard B. Berg...Berg, 2007MontanaBureau ofMines andGeologyBulletin 1342007 Cover photo:Sapphire from the South...SAPPHIRES IN THE BUTTE–DEER LODGE AREA,MONTANARichard B. BergMontana Bureau of Mines and Geology2007... . . . . . . . . . . . . . . . . 1Summary ofMontana Sapphire Deposits. . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 26BrownsGulch and Vicinity . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | chemical composition.370Alluvial Sapphires fromMontana: Inclusions, Geochemistry, andIndications of a...Robert E. KaneGuanghai ShiLondon, UKHelena,MontanaBeijing, ChinaJohn L. EmmettStefanos Karampelas...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008USA© 2015 Gemological Institute of AmericaAll rights...conditions.Alluvial sapphires from the U.S. state ofMontana have long been celebrated for their kaleidoscope...rugged fringes of Australia’s arid Great ArtesianBasin:Lightning Ridge, Koroit, Yowah, and Quilpie. Their |  | | Book | | in. ) high from Tourmaline Queen Mine, San DiegoCounty, Pala, California.Back Cover: Azurite and Malachite...Na)Ali(Al,Si) 3Oi,s •(CO3,SO,,CI) 216Zeohte groupAnalcime NaAISi 2O6 • H2O 217Chabazite CaAl1Si,O, 2 •...~29 Native Gold Sheet on QuartzEl DoradoCounty; California305 cm (2 In.) high Native Gold...across Native Copper in CalciteHancock, HoughtonCounty, Michigan12 cm (4% in.) across37 38Native...(1 ,n.) across FluoriteDenton M ine, HardinCounty, Illinois8.3 cm (3 ¼ in.) high67 Fluorite |  | | Report (article/chapter) | | two subtypes of lamproites were character- OmanMountains, Arabia (Searle 1984), atized by the following...of lamproitesindividual lamproite suites withlittle regard toand Wagner & Velde (1986a) discussed...referenceCross 1897•xxxxxxxFitzroyBasin, W. Australia Wade & Prider 1940•xxx )~...rare).3 Alteration or secondary phases compriseanalcime, chlorite, quartz, TiO 2 polymorphs, Downloaded...1.5 x 103 to 2.5 •103 Ma.Enoree Vermiculitedistrict, S Carolina ( E V D )(34 ~ 30' N, 82 ~ W)Geochemical | | | Book (volume) | | Vivid blue matched benitoite gems from Sai, BenitoCounty, California, consisting of 52 benitoites and 75...oligoclase feldspar (5.04 et), Oregon; and threeMontana sapphires, violetish blue (2 .52 et), yellow (4...large-scale mining of sapphire-bearing gravels inMontana is beginning and is expected to produce large quantities...c1ystals, many of facet-grade, found in the Wah WahMountains of Utah are to be mined by conventional open-pit...discovery and production in the continent, there islittle doubt that many regions remain unexplored because |  | | Journal (issue) | | Robert E. KaneGuanghai ShiLondon, UKHelena,MontanaBeijing, ChinaJohn L. EmmettStefanos Karampelas...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008USA© 2017 Gemological Institute of AmericaAll rights...etching, in quartzcrystals from India’s JalgaonDistrict.NOTES AND NEW TECHNIQUES82Characteristics...Moroccan amethyst • Emerald dealing in Afghanistan •Montanasapphire production • Magnesio-axinite from Tanzania...crewmembers deserted to go to the diamond miningarea:Alittle time before the arrival of Roggewein, the Portuguese |  | | Journal (issue) | | 4894 Briar Ridge Court, Boulder, CO 80301-3980,USA** No. 724, 1st Floor, Merchant St., Yangon, Myanmar...surface. This area nowappears to be exhausted, andlittle mining iscarried on there today except for peridots...Before 1882Shepard CollectionAmherst College,USAKunz, 1892UnnamedOver 101b (4.5kg); sapphire...Gem Trade Laboratory, Santa Monica, California,USAAbstractThis article describes the gemmological...concurrent gem and mineral showsin Tucson, Arizona,USA, the authorsencountered a considerable amount of |  | | Journal (issue) | | Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008USA© 2019 Gemological Institute of AmericaAll rights...andsapphire in lamprophyre and syenite as inMontana(United States) and Garba Tula (Kenya), respectively...Cretaceous black shales ofthe Eastern CordilleraBasin. These are related to thecirculation of hydrothermal...primary ruby and sapphire deposits in the gemstonebelt of East Africa, Madagascar, India, and Sri Lanka...that were active in the ruby-bearingmetamorphicbelt from Afghanistan to Vietnam.The fourth period of |
|