 | | 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...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal |  | | Journal (article/letter/editorial) | | Amethyst Mine RUSS HAGE 701 Lolo Street Missoula, Montana 59802 dukbstr@aol.com MICHAEL A. MENZIES Unit...Alberta Canada T3B 4T7 mmenzies@shaw.ca Jefferson County, Montana P erched high on the south-facing side...steep ridge just east of the continental divide in Montana is the Little Gem amethyst mine. It is an imposing...the southern boundary of the Boulder Batholith in southwestern Montana. Map prepared by William Besse...southern extremity of the well-mineralized Boulder Batholith where those prospectors were seeking mineable |  | | Journal (article/letter/editorial) | | Origins of Water in the Boulder Batholith and the Butte Ore Deposits,Montana* SIMONM. F. SI•EPP^m) Arm...Butte ore deposits,and the Late CretaceousBoulder batholith as well, appear to be Postbetholith rocks ,:::•QPrincipol...role of primary magmaticand meteoric hydrothermal Boulder betholith plutons ß Biotite fluids during the evolutionof...western FiG. 1. Generalizedgeologicalmap of the Boulder bathoMontana-Idaho-easternWashington region during...the major mines and prospects within the Boulder batholith shouldhavebeenisotopicallyheavierthan today |  | | 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 |  | | Journal (article/letter/editorial) | | an individual magmatic complex such as the Boulder batholith, and by at least one isotope ratio that is...area Santa Lucia Mountains Southern California batholith Salton Sea Locality Material and filament material*...Silver City Jcmcz Mountains Elkhorn Mountains Boulder batholiih Locality 30 29 28 27 26 25 24...18-348 17-960 16-917 17-899 17-960 17-436 Montana : Pbl08/Pb!01 3814 15-56 15-71 39-42 37-99...from 16-58 to 19-58, *9° 'Si 49° "5o. J K MONTANA /NORTH DAKOTA\ 1-33° FIG. 1. Sample location |  | | Journal (article/letter/editorial) | | McLarenDeposit, New World District,ParkCounty,Montana TODDW. JOHNSON ø ANDLAWRENCE D. MEINERT Department...rictnearCookeCity,ParkCounty,in south-central Montana. The depositishostedby gentlydippingmieriteanddolomitie...rocks.Earlyepidotealteration consists largelyof epidote(Ps9.4_33) andK feldsparwith lesseramounts of amphibole...Late epidotealterationconsists predominantly of epidote,amphibole,pyrite, magnetite,carbonate, and ehaleopyrite...Introduction New World districtin south-central Montana(Fig. 8 km north of TI-IEMcLaren depositis one |  | | 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 |  | | Report (issue) | | the Basin and Boulder Mining Districts, Boulder River Watershed, Jefferson County, Montana Professional...the Basin and Boulder Mining Districts, Boulder River Watershed, Jefferson County, Montana Edited by David...historical mining in the Boulder River watershed, Jefferson County, Montana............................Geological Survey The Boulder River watershed study, Jefferson County, Montana ........................Fey, and Tracy C. Sole D9. Hydrogeology of the Boulder River watershed study area and examination of the |  | | 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 |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted...Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's finest ilmenite specimens | | | 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...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache...Comnussion, Little Rock, AR; Richard W Hughes, Boulder, CO; Duane L. Johnson, Rocky Mountain Soapstone |  | | Book | | Geochemistry PUBLIC LIBRAHY Fort Wayne and Allen County, Indiana K STO 3 'S33 00148 .8060 N Digitized...isochron lines are a plot of equation (2-23) and pass through a point P, which represents the ratios of...AGES FOR THE BUTTE QUARTZ MONZONITE, BOULDER BATHOLITH, MONTANA Radiogenic K2O Sample Mineral locality...Station %) Biotite Hornblende Hornblende Homestake Pass (weight I., M. R. Klepper, and J. D. Obradovich...1968, time span of emplacement of the Boulder batholith, Montana, 671-689. Am. K-Ar J. Sci., v. ±2 |  | | Journal (issue) | | or two fluids or with quartz and apatite and/or epidote respectively; or those partly-healed fractures...a syringe needle) would strike the first mirror, pass through the concentric layers of nacre on a natural...Amazonite {see also feldspar) from Pike's Peak batholith, 184 Amber {see also organic gems), 639 —alluring...identification, 577 Engraving, gem, 121 Eosphorite, 8 Epidote, red (see clinozoisite) Euclase: 18 —an exceptional...MARTIN (R. F.), Amazonite from the Pike's Peak batholith, 184 Fossil ammonite (see ammonite) Fossil resins |
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