 | | Report (volume) | | ............................................. Montana ....-.-.--.......................................___..__._....._..._______..__._.____..._.____.' Montana .............................................................................................. Montana ...............................................................-....--......... ..----........ Montana .........'... ................................... II. Outcrop of peridotite at Buck Creek, Clay County, N. C........ III. A, Corundum in chlorite at Corundum |  | | Report (volume) | | sapphires^......... ..........._............. ...... Montana sapphires ........ ..............................sapphires ...... _........................... Yogo Gulch sapphires ............................. ............................. ................. Macon County .........._. ...........,..-...........-.............. .......... .1...................... Clay County.. ...............................................tracts...................... ......... Jackson County ................ ............................. |  | | Journal (article/letter/editorial) | | impossible to distinguish different varieties, such as pleonaste and hercynite, under the microscope they will...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...cordierite, andalusite, sillimanite, telspar, biotite, pleonaste, corundum, rutile, quartz, garnet, zircon, and |  | | 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 |  | | 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 | | 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 |  | 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) | | frequently feldspar (sanidine) and Fe-bearing spinel (pleonaste). Primary melt inclusions are rare in the Naryn-Gol...forsterite with Mg # 90.27 (Figure 9c); spinel by pleonaste low in chromium (0.57 wt. %) and in titanium (0...[18] determined the lava age of the Dzhida River basin using the 40 Ar-39 Ar method. The results indicate...on the reserve balance sheet, are known in the basin of the Darkhintuy River, into which the Naryn-Gol...scheelite widely distributed in the Dzhida ore district. The source of uraninite may be the granites. |  | | Journal (issue) | | Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA © 2019 Gemological Institute of America All rights...and sapphire in lamprophyre and syenite as in Montana (United States) and Garba Tula (Kenya), respectively...Cretaceous black shales of the Eastern Cordillera Basin. These are related to the circulation of hydrothermal...primary ruby and sapphire deposits in the gemstone belt of East Africa, Madagascar, India, and Sri Lanka...that were active in the ruby-bearing metamorphic belt from Afghanistan to Vietnam. The fourth period of |  | | 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 |  | | Journal (issue) | | sapphire plays in the world gem market, surprisingly little has been written about this indigenous gem. This...contains xenocrysts of such minerals as ilmenite, pleonaste, amphiboles, feldspar, zircon, corundum, and pyrope...proportions and include (in order of abundance) pleonaste (spinel), zircon, ilmenite, magnetite, olivine...described by Jobbins and Berrangd (1981). The pleonaste is usually much more abundant than the sapphire...at various localities in situ in solid basalt, pleonaste quite commonly and sapphire and zircon very rarely |  | | Journal (issue) | | areas) and drainages, Pailin district, Figure 2: Distribution district, continuous lines, with with gem-barren...ground) are are the jungle-clad Tadeth Tadeth Mountains Mountains Photograph by E.A. Jobbins. Jobbins. rocks)...collect and market the gem material from the volcanic belt of eastern Australia (Pain, 1983; miners. Photograph...pyrope-almandine garnet Phnum Ko Ngoap material is and little zircon. Phnurn dominated by pale pink to red, light-blue...crystals from sapphirine (blue-green) and and pleonaste pleonastespinel spinel both sapphirine (blue-green) |  | | Journal (issue) | | Bu THE GEM SHOP COi ma soc tirr Wolf Creek, Montana Box R37 ! 2 of t.hE arc and MINERALS Edited...mouth. These are angular particles showing but little wear. As the river Tiber is a comparatively short...standpoint this is fortunate for there would be but little intellectual incentive to m erely collect and display...-J. Etlmuncl Estes. Located at the junction of County Street and Eastern Avenue in the easterly section...On November 26th, last, the Rolling Rock and the little park that encloses it were formally dedicated and |  | Giuliani, Gaston, Groat, Lee, Fallick, Anthony, Pignatelli, Isabella, Pardieu, Vincent (2020) Ruby Deposits: A Review and Geological Classification. Minerals, 10 (7) 597 doi:10.3390/min10070597 | Journal (article/letter/editorial) | | Creek); (24) Montana (23) North Carolina (Corundum Hill; Cowee Valley; Buck Creek); (24) Montana (Rock Creek)...(Fiskenæsset district(25) Revelstoke. Greenland: (26) South of Nuuk region (Fiskenæsset district-Aappaluttoq);...Andhra (Salem district). Sri (44) Karnakata (Mysore); (45) Andhra Pradesh (Salem district). Sri Lanka:...Russia: Polar (67) Urals (Hit Island); (69) Ural mountains Melbourne fields;(67) (65) Westland Harts range;... (70) Karelia. Urals (Hit Island); (69) Ural mountains (Kuchin-Chuksin-Kootchinskoye); (70) Karelia. |  | | Journal (article/letter/editorial) | | the rock is lighter in colour; the base contains little glass, its place being taken by a feathery felspathic...addition to acid plagioclase) some orthoclase and a little free quartz. The analysis of a felsite closely...speaking, the tholeiitic intrusions have produced little thermal alteration of the rocks into which they...with the Tertiary dykes of the Oban and Dalmally district. 1 The sillimanite-buchites, of which many examples...closest analogue in the tabular crystals of Yogo Gulch (Montana). 1 1 F o r detailed accounts of the occurrence |  | | Report (volume) | | See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby...Shelby County, near Whiting Station and Calera; Talladega County, in several places. Bauxite. Cherokee |  | | Book (volume) | | Though well endowed with fossils, Illinois has little to offer gem and mineral collectors, even though...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip |  | | Book (volume) | | Though well endowed with fossils, Illinois has little to offer gem and mineral collectors, even though...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip |  | | Report (volume) | | ....................................... 102 District of Columbia ......................................... 139 144 146 153 158 163 169 . 172 174 Montana..................................................Compendium of the mineral resources of Arkansas, Little Rock Board of Trade Bulletin, 1912. Eakle, A. S...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |  | | Book (edition) | | Corporate Drive, Suite 400, Burlington MA 01803, USA First published 1962 Second edition 1970 Third edition...of the revisions over the years have added very little to the 1962 text! Chapters in this category have...affection in which Webster’s great work is held, I had little difficulty in finding willing contributors. As...Canada, Germany, Thailand, Vietnam, the UK and the USA, making this a truly international collaboration...extensive fields in the prophetically named Kimberley district of Western Australia promise to be of world importance |  | | Report (issue) | | qualification of a precious stone, rarity, calls for little comment, for evide111tly no common thing can be...and in consequenoe sapphire and ruby display but little '' fire." Corundum is strongly dichroic, especially...as sapphire-spinel and even the black spinal, pleonaste, is also occasionally used in jeV\~ellery. Being...carbonate with some magnesium car~ bonate and a little orgamc matter. The kind used in jewellery is that...b-een obtained from the g·ranite of the Mourne Mountains in Co. Down, espe-0ially from the N.W. side of |  | | Book | | Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico...been discovered on the flanks of the Caucasus Mountains in the land of Colchis (now Soviet Georgia). The...literally sweep over a collecting locality, missing little along the way. Thus, field trips today, except...listed by county and community, range and distance. Whenever the collector crosses a county line, he will...of the county he is entering posted alongside the highway. By looking up the state and county, the user |  | | Book (edition) | | is better quality lapis lazuli from Badakshan district, of Afghanistan, or 2 DICTIONARY OF GEMS...substitutes such as rock, glass, and pearl with little nacre, Al. Abbr. for the element aluminum, “Alabandine...GEMS fine-quality flat rough rubies. apyrite. A little- used name for peach-bloom colored tourmaline....angle. stone. smithsonite; stone. Avicula. A little used synonym zircon. See sunstone. Same (CaFe)7Alg...colors. R.I. 1.54-1.70 SE of Faisabad, Badakshan district, Afghanistan. Deep violetish blue; also green |  | | Journal (issue) | | synthetic diamonds " came along it was greeted with little interest and with a shrug of disbelieving shoulders...in M o n t a n a from Yogo Gulch in the J u d i t h Basin, and from Sapphire Gulch near Philipsburg, plus...gravels of the R a t n a p u r a district of Ceylon; the Bo Pie district in Batambang, Siam; Mogok mines...examination under the microscope u p to 900 x added little as the inclusions were so fine. T h e Becke method...remaining at the bottom of the test-tube for some little time and re-heating, the SbBr 3 coating melted |  | | Book (edition) | | was soon realized that dimension and size are of little importance in crystals, because their form remains...gypsum and asbestos. Minerals that reflect only a little are those with a waxy luster (chalcedony) and,...a mineral was discovered (benitoite, San Benito County, California), or dedicated to a scholar (dolomite...from the Keweenaw measuring Peninsula (Lake USA) where masses weighing up to 400 metric tons and...Arizona (USA) and in the manganese skarns of Langban (Sweden) and Franklin, New Jersey (USA). Dendrites |
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