| | 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 | | | 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 | | | 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 (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 |
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