 | | 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...with its representation of mining tools clearly proclaim Montana’s mining origins. Montana’s production...published describing the occurrence, collecting, mining, and cutting of the two state gemstones. Figure...2. Granville Stuart established Montana’s first mining camp at Gold Creek in 1860. Geologic Provinces |  | | Report (volume) | | BULLETIN 527 ORE DEPOSITS OF THE HELENA MINING REGION MONTANA BY ADOLPH KNOPF WASHINGTON GOVERNMENT............................ Historical sketch of mining.................................................................................... Marysville district..................................................................................... Elliston district.................................................................................... Twin. City Mining & Milling Co.'s mine.......................... |  | | Report (issue) | | ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA Edited by R.G. Tysdal 1 , Steve Ludington2 , and...ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 96-683-A...in west-central Montana. It lies in the vicinity of Helena, the capitol city of Montana, and includes Federal...lands within parts of five counties: Broadwater, Jefferson, Meagher, Powell, and Lewis and Clark. * Gold...was discovered in the region in Powell County in 1852. Mining began in the 1860's, and since then the |  | | Report (issue) | | Geology of the Southern Elkhorn Mountains Jefferson and Broadwater Counties, Montana By M. R. KLEPPER, R...Maywood and Red Lion formations Devonian system Jefferson dolomite Devonian and Mississippian systems Three...unit_ Upper black shale unit Slim Sam formation Elkhorn Mountains volcanics____ General features Distribution...related rocks Younger intrusive rocks Stocks near Elkhorn Black Butte stock Cemetery Ridge stock Stock of...Evolution of land forms Metallic mineral deposits Elkhorn district Geology Types of deposits Replacement deposits |  | | Report (issue) | | SURVEY Mineral Resources of the Elkhorn Wilderness Study Area, Montana A cooperative study by the U.S...rocks Igneous rocks Elkhorn Mountains Volcanics Intrusive rocks related to Elkhorn Mountains T7.-% T /...Silver-lead-zinc replacement deposit':?.. Elkhorn-Tizer Basin zone Elkhorn district -»_»_.,H"1 -? r7Q f i-L^ifciL... __ -- . __««.»____.____ ,_«.___._ .~.__ -« Jefferson City zone Base- and precious metal-bearing quartz...geology Important occurrences Mining districts (lodes) Beaver Creek district C O O /-\ t£ +L fU -t-L Y-* |  | | Report (volume) | | Resources of the Elkhorn Wilderness Study Area, Broadwater and jefferson Counties, Montana U.S. GEOLOGICAL...1805 MONTANA Mineral Resources of the Elkhorn Wilderness Study Area, Broadwater and Jefferson Counties...Counties, Montana By WILLIAM R. GREENWOOD, STEVE LUDINGTON, WILLIAM R. Ml LLER, and WILLIAM F. HANNA With...resources of the Elkhorn Wilderness Study Area, Broadwater and Jefferson Counties, Montana. (Studies related...1. Mines and mineral resources-Montana-Elkhorn Wilderness. 2. Elkhorn Wilderness (Mont.) I. Greenwood |  | | Report (issue) | | Petrology of the Northern Elkhorn Mountains I I Jefferson and Broadwater Counties, Montana GEOLOGICAt ' SURVEY...Northern Ell(horn Mountains Jefferson. and Broadwater CountieS, Montana By HARRY w. SMEDES GEOLOGICAL...Interpretation of the relation between facies ___ _ Elkhorn Mountains Volcanics Lower unit ________________________________...and petrology __________________ _ Alteration of Elkhorn ~ountains Volcanics and intrusive rocks _________________...of the northern Elkhorn Mountains. 2. Fence diagram of part of the northern Elkhorn Mountains. 3. lRange |  | | Report (volume) | | DIRECTOR BuiiIiETIN 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS BY ALEXANDER................................................. Mining districts...................................................................................... Mining development. ...................... .. - - ' -..................................... 18 Placer mining....... ~................................................................ 20 Present status of mining .....:........................................ |  | | Journal (article/letter/editorial) | | labradorite. Here fall four specimens from the Elkhorn district, Montana, on the border of the Butte batholith..."Microscopical Petrography of the Elkhorn Mining District, Jefferson County, Montana," U.S. Geol. Surv., Ann....(labradorite to anorthite) together with augite and diopside. Hornblendeand biotite are not abundant in the...215; also "Geology of the National Mining District, Nevada," Mining and Scientific Press, CV (1912), 657...AssociatedGraniticRocksin the Vicinity of Salem, Essex County, Massachusetts," Bull. Essex Inst., XXIII (1891) |  | | Journal (issue) | | WASHINGTON November 3, 2007 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...of Eugene, Oregon near the town of Trent in Lane County, Oregon, just southeast of Springfield/Eugene (Staples...Trent, Lane County, Oregon Fig. 5 Yellow orpiment needles in chalcedony, Trent, Lane County, Oregon Fig...realgar needles, Royal Reward mine, Green River, King County, Washington Fig. 6 Yellow orpiment coating red...covered with colorless chalcedony. Trent, Lane County, Oregon. Fig. 7 Hollow needles, formerly realgar |  | | Report (issue) | | Porphyry and Other Molybdenum Deposits of Idaho and Montana Joseph E. Worthington Idaho Geological Survey.................................... 3 Rocky Bar District—43 .............................................Hecla District—41 ...................................................................... 9 Elkhorn Mine—17...18 Table 1. Molybdenum Deposits of Idaho and Montana ............................ 2 Figure 1. Porphyry...Idaho and Montana ............. 4 Figure 2. Porphyry molybdenum deposits of Idaho and Montana, showing |  | | Journal (article/letter/editorial) | | Herkimer Diamond Mines, Inc., New port, Herkimer County, New York. Jeffrey B. Fast specimen and photo....cleavelandite, 49er Pocket, Oceanview mine, Pala district, San Diego County, California. Bill Larson specimen, Jeff...September/October: Gold, Mockingbird mine, Mariposa County, California. Collector’s Edge Minerals, Inc., specimen...Treasure Chest Pocket, Jacksons Crossroads, Wilkes County, Georgia. Lisa Bennett specimen, Jeff Scovil photo...119; Connecticut, 158 Anglesite, Colorado, 442; Montana, 27; Utah, 57 Vo l u m e 8 3 Anhydrite, Connecticut |  | | Journal (article/letter/editorial) | | granodiorite of the Boulder bathylith south of Helena, Montana. It occurs also at other places in the contact...fine material was found in the famous old mining camp of Elkhorn, on the east border of the bathylith, and...probably the dominant mineral. Subordinately occur diopside, calcic plagioclase, scapoiite, pale blue tourmaline...the aplite by the metasomatic introduction of diopside, epidote, and sphene' Hence the alteration of...grossularite. The grossularite and possibly the diopside are the oldest minerals in the deposit. They were |  | | Journal (article/letter/editorial) | | BODY AT ELKHORN, MONTANA. 1 ADOLPH KNOPF. INTRODUCTION. Elkhorn is situatedin the Elkhorn mountains...oœButte, Montana. The areal geologyof the environsof Elkhorn and the economicgeology of the Elkhorn mine...mine, the largestproducerin the district, are describedin the report on the Elkhornminingdistrictby Walter...described in this paperwas not known. Geologically,Elkhorn lies on the easternmarginof the great quartz monzonite...JeffersonCounty,Montana,with an Appendixon the Microscopical Petrographyof the District by JosephBartell |  | | Journal (article/letter/editorial) | | Caldwell Stone Company quarry, Danville, Boyle County. Terry Huizing specimen and photo. K entucky...Commonwealth is Black Mountain in the Appalachians (Harlan County) at 4,139 feet. The lowest point is the floor of...of the Reed quarry near Grand Rivers (Livingston County) in western Kentucky, at 100 feet below sea level...small, nondiamondiferous kimberlite in Elliott County in eastern Kentucky and alnöite intrusions in Crittenden...described in Anderson (1994). The most widespread mining in Kentucky is coal. More than 7.4 billion tons |  | | Journal (article/letter/editorial) | | Elbaite in quartz, 6 × 9 cm, Chesterfield, Hampshire County, Massachusetts. Holmes collection. Specimen received...nineteenth-century mineral collecting in North America. Mining was very much in its infancy in Canada, and Holmes’...John G. Miller (1841–1885) was active in phosphate mining in Quebec and later in Puerto Rico (Hogarth 1983)...He is known to have supplied specimens from his mining properties to the mineral dealer A. E. Foote. His...graduate and resident of Elkhorn, Montana, donated a collection of minerals from Montana and Idaho to the museum |  | | Report (volume) | | Director Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER UNITED...______________________-__-_________--_------___-_ Ophir district.________________________________________________...__________---__--_-___ Austin district._.____..._..._._.____._____.____.___-.___._____ Marysville district.___________...___________________________________________ Gould district._______________________________________________ Stemple...._ Heddleston district.___________________________________________ Wolf Creek district.._..........__ |  | | Report (volume) | | Geology of the Canyon Ferry Quadrangle, Montana By JOHN B. MERTIE, JR., RICHARD P. FISCHER, and S....system_ _____________________________________ Jefferson limestone ______________________ ~__________ Three...bentonite deposits northeast of Winston, Broadwater County, Mont ____________________________ In pocket FIGURE...and parallels 46°30' and 46°45' in west-central Montana. As a new dam on the Missouri River is to be built...irrigate large tracts of land in the valleys of Jefferson, Madison and Gallatin Rivers, the headwaters of |  | | Report (volume) | | on the West Edge of the Crazy Mountains Basin, Montana GEOLOGICAL SURVEY BULLETIN s Ci p- 142 2-B...on the West Edge of the Crazy Mountains Basin, Montana By BETTY SKIPP and L. W. McGREW CONTRIBUTIONS...on the west edge of the Crazy Mountains Basin, Montana. (Contributions to stratigraphy) (Geological Survey...2. Volcanic ash, tuff, etc.-Montana-Crazy Mountains. 3. Geology-Montana-Crazy Mountains. I. McGrew, Laura................................... Relations to Elkhorn Mountains Volcanics .......................... |  | VALLEY, J. W., PEACOR, D. R., BOWMAN, J. R., ESSENE, E. J., ALLARD, M. J. (1985) Crystal chemistry of a Mg-vesuvianite and implications of phase equilibria in the system CaO-MgO-Al2O3-SiO2-H2O-CO2. Journal of Metamorphic Geology, 3 (2) 137-153 doi:10.1111/j.1525-1314.1985.tb00311.x | Journal (article/letter/editorial) | | Geophysics, University of Wisconsin, Madison, W153706, USA D. R. PEACOR, Department of Geological Sciences,...Univcrsity of Michigan, Ann Arbor, M I 48109-1063, USA J. R . B O W M A N , Department of Geology & Geophysics...University of Utah, Salt Lake City, U T 84412-1183, USA E. J. ESSENE & M . J . A L L A R D , Deparrment of...University of Michigan, Ann Arbor, M I 48109-1063, USA Abstract. Chemical analysis (including H,, F,, FeO...O,) of a Mg-vesuvianite from Georgetown, Calif., USA, yields a formula, absence of quartz and require |  | | Journal (article/letter/editorial) | | Mineralogy and Petrology of a Tactite near Helena, Montana* by ROBERT J. SHEDLOCKt AND ERIC J. ESSENE The...north-east margin twelve miles east of Helena, Montana. First described by Knopf & Lee (1957), the bodies...clintonite. Less common minerals include pargasite, diopside, wollastonite, sphene, perovskite, anorthite,...evidence for a solvus gap between fassaite and diopside as proposed by Ginzburg (1969). The most aluminous...assemblages (wollastonite, calcite—forsterite—diopside) that Turner lists as characteristic of the pyroxene-hornfels |  | | Report (volume) | | In recent years, a significant proportion of the mining industry's interest has been centered on discovery...include garnet (andradite-grossular), pyroxene (diopside-hedenbergite), wollastonite, chlorite, epidote... INTRODUCTION Gold exploration efforts of the mining industry in the last few years have centered on...Company; Edward I. Bloomstein of Santa Fe Pacific Mining, Inc.; Gail M. Jones of Western Geologic Resources...San Rafael, Calif.; Bruce A. Kuyper of Echo Bay Mining Co.; JeffS. Loen and John Childs of Lupine Minerals; |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...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; |  | | Report (issue) | | A closer look at the Bald Mountain batholith, Elkhorn Mountains, and some comparisons with the Wallowa...have nearliquidus or "magmatic" compositions. Di, diopside; En, enstatite; Fs, ferrosilite; Hd, hedenbergite...Geologic map of the Mount Vernon quadrangle, Grant County, Oregon: U.S. Geological Survey Geologic Quadrangle...deposits of the Mineral-Iron Mountain District, Washington County, Idaho, and of a metallized zone in western...Strawberry Mountain Wilderness and adjacent areas, Grant County, Oregon: U.S. Geological Survey Bulletin 1498, |  | | Report (issue) | | Geology of the Three Forks Quadrangle Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER 370 Geology of...of the Three Forks Quadrangle Montana By G. D. ROBINSON With sections on Petrography of Igneous Rocks...Vall, 1918Geology of the Three Forks quadrangle, Montana. With sections on petrography of igneous rocks...Bibliography: p.135-140. 1. Geology-Montana-Three Forks quadra.ngle. 2. Petrology-Montana-Three Forks quadrangle.... 1921. II. Title: The Three Forks quadrangle, Montana. (Series) For sale by the Superintendent of Documents |
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