 | | 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... the Rocky Mountains, and furthest to the northwest, the belt basin. The Rocky Mountains contain sedimentary |  | | Journal (article/letter/editorial) | | nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana A. R. Chakhmouradian and R. H. Mitchell...1999 Summary The pegmatites at Pegmatite Peak (Bearpaw Mts., Montana) crystallized from an evolved fraction...includes Mg-Fe mica, rutile, zircon, titaniferous magnetite and thorite. Precipitation of these phases was...[chevkinite-(Ce)]. Strontiochevkinite from Pegmatite Peak is compositionally similar to the type material...yon Pegmatite Peak, Bearpaw Mrs., Montana Die Pegmatite yon Pegmatite Peak (Bearpaw Mts., Montana) sind |  | | Journal (article/letter/editorial) | | Survey, 956 National Center, Reston, Virginia 20192, USA ABSTR ACT The composition of chevkinite and perrierite...Society from nepheline syenite pegmatites in Montana (Chakhmouradian and Mitchell, 1999), polyakovite...polyakovite, found in a dolomite vein in the Ilmen Mountains in the Urals, Russia (Popov et al., 2001), a Mg-Al-rich...fugacity varying from lower than the fayalite+magnetite+ quartz (FMQ) buffer to above the nickel+nickel...analyses of chevkinite-group minerals from the western USA, Virginia, Russia, Malawi, Mali and Madagascar are |  | | Conference Paper/Abstract | | associated alkaline rocks from Gordon Butte, Crazy Mountains (Montana) Roger H. Mitchell (Lakehead University)...Alkaline igneous rocks of central and western Montana (U.S.A.) exhibit a great petrographic diversity...Alkaline parageneses of different provenance from Montana have been shown to contain a variety of rare minerals...Mitchell 1999). Igneous lithologies of the Crazy Mountains area include a subalkaline series (gabbro-diorite-granite)...assemblages from the Gordon Butte area, northern Crazy Mountains. At Gordon Butte, four major intrusive series |  | | Journal (article/letter/editorial) | | alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic...Springer-Verlag 2002 Abstract At Gordon Butte (Crazy Mountains, Montana), agpaitic nepheline±syenite pegmatites intrude...malignites and nepheline microsyenites). All pegmatite veins are composed predominantly of potassium...Alkaline igneous rocks of central and western Montana (USA) exhibit great petrographic diversity, and are...Alkaline parageneses of dierent provenance from Montana have been shown to contain a variety of rare minerals |  | | | | Geological Survey, 956 National Center, Reston, VA 20192, USA 4 Camborne School of Mines, School of Geography,...presented of chevkinite-group minerals from Canada, USA, Guatemala, Norway, Scotland, Italy and India. The...IMA-approved) include perrierite-(La) found in a syenitic pegmatite from Bjørkedalen, Oslofjord, Norway (Segalstad...perrierite-(Ca) perrierite-(Ca) 7 8 Pegmatitic Bearpaw Mts, Montana Burley Farm, Virginia Bjørkedalen, Norway...East Antarctica nepheline syenite granitoid pegmatite syenite cutting gneisses strontio-chevkinite |  | Macdonald, Ray, Bagiński, Bogusław, Belkin, Harvey E., Stachowicz, Marcin (2019) Composition, paragenesis, and alteration of the chevkinite group of minerals. American Mineralogist, 104 (3) 348-369 doi:10.2138/am-2019-6772 | Journal (article/letter/editorial) | | site of an Fe-rich chevkinite-(Ce) from Mianning County, Sichuan, China, was given 2+ 2+ by Yang et al...inter alia, of perrierite-(Ce) from the Bearpaw Mountains, Montana, U.S.A. (0.35–1.18 apfu; Chakhmouradian...may be an artifact arising from Ti uncorrected for peak interference. Figure 9. La vs.Y plot to show that...described, from a fenitised granite in the Ilmen Mountains, southern Urals, Russia, a phase that they named...cross-cutting a phlogopite-olivine rock in the Ilmen Mountains (Popov et al. 2001). It is an unusual member of |  | Macdonald, R., Bagiński, B., Kartashov, P., Zozulya, D., Dzierżanowski, P. (2012) Chevkinite-group minerals from Russia and Mongolia: new compositional data from metasomatites and ore deposits. Mineralogical Magazine, 76 (3) 535-549 doi:10.1180/minmag.2012.076.3.06 | Journal (article/letter/editorial) | | from the apical parts of granitic bodies) and a pegmatite (sample 5745b). Sample K3 is from borehole DH#...Cr-rich CGM polyakovite-(Ce) is in the Ilmen mountains, southern Urals. It was found in a dolomite veinlet...CGM (sample K4) from a syenite pegmatite in vein 35, Vishnevye mountains, Chelyabinsk Oblast’, which is...probe current was 20 nA. Counting times were 20 s on peak and 10 s on each of two background positions. The...chevkinite-(Ce) Mineral metasomatite dolomite vein pegmatite pegmatite apatite ore ores associated ores associated |  | | Journal (article/letter/editorial) | | 4. (a) Zoned spinel with Cr-rich core and Ti-magnetite mantle set in groundmass composed of fresh-to...spinels, and are spinel-chromite-ulvöspinel-magnetite solid solutions. Other spinels consist of euhedral...pinel-magnetite-cores overgrown by strongly continuously-zoned qandiliteulvöspinel-magnetite solid solutions...crystals also consist of qandiliteulvöspinel-magnetite solid solutions. Spinel-II included within phlogopite...Representative compositions (wt.%) of spinels in pegmatite mica. TiO2 Al2O3 Cr2O3 FeO* MnO MgO Total Recalculated |  | | Book | | Firefly Books Ltd. Buffalo, New York Richmond Hill, Ontario Published in the United States by PO....139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia * 5 x 6 x 3 cm Page 251: Calcite, Irai...Serbia ¢ 11x8x7cm LEFT: Fluorite, Taihang Shan Mountains, Hebei, China * 19x13x1cm 10 | MINERALS: PRODUCTS...considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 cm. Biominerals Crystals formed...a fracture, producing such forms as aegirine pegmatite. As well, hot hydrothermal fluids often carry | | | Book | | Buffalo, New York 14205 66 Leek Crescent Richmond Hill, Ontario L4B 1H1 Design and Layout: Joseph Gisini/PageWave...139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia * 5 x 6 x 3 cm Page 251: Calcite, Irai...Serbia ¢ tixex7 cm LEFT: Fluorite, Taihang Shan Mountains, Hebei, China * (Sexes selem 10 | MINERALS:...considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A...a fracture, producing such forms as aegirine pegmatite. As well, hot hydrothermal fluids often carry |  | Liferovich, R. P., Mitchell, R. H., Zozulya, D. R., Shpachenko, A. K. (2006) Paragenesis and composition of banalsite, stronalsite, and their solid solution in nepheline syenite and ultramafic alkaline rocks. The Canadian Mineralogist, 44 (4) 929-942 doi:10.2113/gscanmin.44.4.929 | Journal (article/letter/editorial) | | Accessories present include zircon, titanian magnetite, pyrochlore, fluorite, meliphanite, Y-rich britholite...biotite, Ba-bearing K-feldspar, ilmenite and magnetite. Nepheline is impregnated with abundant microlites...barytolamprophyllite, manganoan ilmenite, titanian magnetite, natrolite, gonnardite(?), pectolite, calcite...are hosted by a late dyke of porphyroclastic magnetite-rich calciocarbonatite. Stronalsite is coeval...5 and unity, and oxygen fugacities above the magnetite–hematite buffer. These conditions are applicable |  | | Journal (article/letter/editorial) | | contain minor fluorite and apatite. Pyrrhotite and magnetite are uncommon accessories found only in some of...boundary zone of a pegmatite vein and MA MEPB37C from the core of the same pegmatite. The most abundant...designated Amph2 (Fig. 2a, b, c, d). In CE P the pegmatite, minor amounts of amphibole similar to Amph2 in...mineral) were used. Counting time was 10 to 30 s on peak (and half-time on each of the 2 background positions)...were used. Counting times varied from 13 seconds on peak and 6.5 seconds on the two background positions |  | Filina, Maria I., Aksenov, Sergey M., Sorokhtina, Natalia V., Chukanov, Nikita V., Kononkova, Natalia N., Belakovskiy, Dmitriy I., Britvin, Sergey N., Kogarko, Lia N., Chervonnyi, Alexandr D., Rastsvetaeva, Ramiza K. (2019) The new mineral fluorbarytolamprophyllite, (Ba,Sr,K)2[(Na,Fe2+)3TiF2][Ti2(Si2O7)2O2] and chemical evolution of lamprophyllite-group minerals in agpaitic syenites of the Kola Peninsula. Mineralogy and Petrology, 113 (4) 533-553 doi:10.1007/s00710-019-00664-0 | Journal (article/letter/editorial) | | University of Notre Dame, Notre Dame, IN 46556, USA 4 Institute of Problems of Chemical Physics, Russian...Saint-Hilaire in Canada (Wight and Chao 1995), Bearpaw Mountains and Gordon Butte in the United States (Chakhmouradian...major or minor components of hydrothermal and pegmatite associations. The first petrological and mineralogical...al. 2012). Alkaline magmatic activity reached its peak in the Devonian. The largest alkaline complexes...1994), Pilanesberg (Zaitsev and Kogarko 2002), Bearpaw (Chakhmouradian and Mitchell 1999), Ol Doinyo Lengai |  | Mitchell, R. H., Yakovenchuk, V. N., Chakhmouradian, A. R., Burns, P. C., Pakhomovsky, Y. A. (2000) Henrymeyerite, a new hollandite-type Ba-Fe titanate from the Kovdor Complex, Russia. The Canadian Mineralogist, 38 (3) 617-626 doi:10.2113/gscanmin.38.3.617 | Journal (article/letter/editorial) | | composed of forsterite, clinohumite, fluorapatite, magnetite, phlogopite and calcite. The carbonatite vein...described in a “Ba–Ti hollandite” from the Tian Shan Mountains (Dmitriyeva et al. 1992) and the synthetic compound...minerals from some localities, e.g., Murun and Pegmatite Peak (Mitchell & Vladykin 1993, Chakhmouradian &...nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineral. Petrol. 67, 85-110. CHEARY |  | | Journal (article/letter/editorial) | | diopside, amphibole, calcite, titanite, perovskite, magnetite and chlorite. Apart from xenocrysts derived from...yellow perovskite (Fig. 1a) and titaniferous magnetite. In terms of chemical composition, the pale green...xenocrystic perovskite (dark brown, center), magnetite (opaque), calcite (colorless) and magnesiohastingsite...minor amounts, and invariably in association with magnetite. This phlogopite shows normal absorption (Z >... Phlogopite also occurs as a “corona” around magnetite crystals in the wallrock clinopyroxenites; however |  | | Journal (article/letter/editorial) | | respectively. Fe-T| oxides Fe-Ti oxides (Ti-magnetite and ilmenite) are ubiquitous, both as discrete...syenite pegmatites from Gordon Butte, Crazy Mountains (Montana, USA). They suggested that leaching of Na from...nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineralogy and Petrology, 67, 85...Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic agpaitic pegmatite s. Contributi...Marshall, A.S., Dawson, J.B., Hinton, R.W. and Hill, P.G. (2002) Chevkinite-gro up minerals from salic |  | | Journal (article/letter/editorial) | | Microscope (Thermo Fisher Scientific, Waltham, MA, USA) coupled with an INCA Energy 250 EDS microanalysis...microprobe (JEOL USA, Peabody, MA, USA) with five wavelength dispersive spectrometers (JEOL USA, Peabody, MA...MA, USA), also located at the Scientific and Technological Centres of the University of Barcelona. Operating...counting time was 10 s peak and 10 s background except for Ce, La, Ba (20 s peak and 20 s background),... and Na and F (30 s peak and 30 s background). The acquisition method used was two background measurements |  | | Journal (article/letter/editorial) | | Ca-REE phosphate, zircon, rutile, titaniferous magnetite, quartz and diverse sulphides. The accessory minerals...are very small (< 5 mm) grains of titaniferous magnetite, galena, pyrite, chalcopyrite, barite, and zirconium...chromite, apatite, or Ca±Zr-silicate. Titaniferous magnetite occurs rarely as very small (< 5 mm) inclusions...Strontium-bearing apatite from common syenitic rocks in Montana and Russia (Chang et al., 1996) plots near the...nepheline-syenite pegmatites at pegmatite Peak, Bearpaw Mts, Montana. Mineral Petrol 67: 85±110 Chakmouradian |  | | Journal (article/letter/editorial) | | mantling, primary Ti minerals (perovskite, ilmenite, magnetite, and garnets). The microcrysts commonly exhibit...and calcite, with lesser amounts of perovskite, magnetite, titanite, richterite, chlorite, and ilmenite...the primary Ti minerals (perovskite, ilmenite, magnetite, and titanian garnets). In all cases, the microcrystic...Al2O3). (2) Fracture fillings in titaniferous magnetite and pseudomorphs after exsolution lamellae of...Fe-rich titanite 2 replacing ilmenite lamellae in magnetite. * Total Fe expressed as Fe2O3; n.d = not detected |  | Morgenstern, Regine, Turnbull, Rose E., Ashwell, Paul A., Horton, Travis W., Oze, Christopher (2019) Petrological and geochemical characteristics of REE mineralization in the A-type French Creek Granite, New Zealand. Mineralium Deposita, 54 (7) 935-958 doi:10.1007/s00126-018-0854-9 | Journal (article/letter/editorial) | | College, 1600 Campus Road, Los Angeles, CA 90041, USA Rare earth elements (REE) are a fundamental component...was used for 10 bastnäsite spot analyses. Raw mass peak count rates were background subtracted, corrected...(Waight 1995). Accessory minerals include apatite, magnetite, zircon, ilmenite, rutile, leucoxene, and titanite...amphibole (5–10 modal %). Accessory minerals include magnetite, ilmenite, zircon, carbonates, apatite, and rare...c an altered mafic cluster, likely originally magnetite and biotite or hornblende (PPL); d an example |  | | Report (issue) | | ..................... 24 Regional rare-metal pegmatite zoning and lithogeochemical anomalies ................................................... 25 Pegmatite dimensions and structure .............................................................. 33 Bald Hill ........................................................................................ 99 Beryl Hill ....................................................................................... 104 Camel Hill ............................................... |  | Ahijado, A., Casillas, R., Nagy, G., Fernández, C. (2005) Sr-rich minerals in a carbonatite skarn, Fuerteventura, Canary Islands (Spain) Mineralogy and Petrology, 84 (1) 107-127 doi:10.1007/s00710-005-0074-8 | Journal (article/letter/editorial) | | differential discriminator was used to avoid the PK III peak. The following standards were used: glasses from...augite, biotite=phlogopite, feldspar, apatite, magnetite, titanite and zircon. The crystallization temperatures...nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineral Petrol 67: 85–110 Deer...Semail Ophiolite in the Dibba Zone, Northern Oman Mountains. In: Peters TJ, Nicolas A, Coleman RG (eds) Ophiolite |  | | Book | | ians Mr. Atkins and Mrs. Brunton; Dr. or Morgan Hill, William Larson, CA; R. Fallbrook, W. Dr....always is Theophrastus Theophrastus. gazing John Hill by and J. F. Caley make it doubtful whether...gold links National Museum of Naples. McGraw Hill Book Co., After emerald The and and necklace...and for it is However, territory coincides Mountains, prehistoric turquoise,” gemstones, region...Baptiste V. J.-B. Ball 1676. 2nd ed. don: Oxford Hill, Caley, E. R., ence, on Press. 238 ed. in |  | | Journal (volume) | | Geology of Santa Rosa Mountain Area, Riverside County, California, by Lawrence B. Wright Geology and...Diego 15 County, California, by S. C. Creasey Tin Deposits of the Gorman District, Kern County, California...Mountain area, T. 7 S., R. 5 E., S.B., Riverside County, California A, View northwest from near west center... Geologic map, Julian-Cuyamaca area, San Diego County, California 16 Geologic and topographic map, Friday...Kern County, California 38 Geologic map and sections of Upper Butler tin prospect, Kern County, California |
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