 | | 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...[chevkinite-(Ce)]. Strontiochevkinite from Pegmatite Peak is compositionally similar to the type material...bastnaesite-anatase intermediate zone and an ancylite rim. Fluorapatite is rare, and has very high St, Na and REE contents...corresponds to the solid solution series between fluorapatite and belovite-(Ce). At this stage, hollandite-group |  | | 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 |  | Chakhmouradian, A. R., Hughes, J. M., Rakovan, J. (2005) FLUORCAPHITE, A SECOND OCCURRENCE AND DETAILED STRUCTURAL ANALYSIS: SIMULTANEOUS ACCOMMODATION OF Ca, Sr, Na, AND LREE IN THE APATITE ATOMIC ARRANGEMENT. The Canadian Mineralogist, 43 (2) 735-746 doi:10.2113/gscanmin.43.2.735 | Journal (article/letter/editorial) | | intermediate members of a solid solution between fluorapatite and belovite-(Ce), with the belovite content...apatite-group phases are evaluated with the Durango fluorapatite, which has a well-established P63/m symmetry...formation of intimately intergrown domains of fluorapatite and belovite. Keywords: fluorcaphite, apatite...membres intermédiaires d’une solution solide entre fluorapatite et bélovite-(Ce), la proportion en bélovite...phases ordonnées du groupe de l’apatite avec la fluorapatite de Durango, qui possède une symétrie P63/m bien |  | | Journal (article/letter/editorial) | | thin reaction-induced rims on early strontian fluorapatite in nepheline syenite pegmatites. The apatite-group...association with strontian fluorapatite in a eudialyte-bearing nepheline syenite pegmatite. The overall compositional...bordures de réaction sur des cristaux précoces de fluorapatite strontifère dans des pegmatites de composition...association intime avec une fluorapatite strontifère dans une pegmatite de composition de syénite néphélinique...analytical lines were used: CaK␣, PK␣ and FK␣ (fluorapatite, NHM #1926.665), SrL␣ (synthetic SrTiO3), NaK␣ |  | | 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) | | primary aluminosilicates, rinkite, eudialyte and fluorapatite. The composition of apatite group minerals formed...sequence: orthomagmatic fluorapatite; strontian britholite-(Ce); strontian fluorapatite; Sr-apatite; REE-rich...form a near-complete solid solution between fluorapatite and a fluorine analogue of Sr apatite with limited...incompatible and volatile elements in late-magmatic, pegmatite and postmagmatic mineral parageneses. These substitutions...poikilitic eudialyte-I, rinkite, and astrophyllite. Fluorapatite in sodalite-rich white foyaite commonly shows |  | 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) | | Henrymeyerite is associated with dolomite, fluorapatite, tetra-ferriphlogopite, rimkorolgite, catapleiite...nm. La henrymeyerite est associée à dolomite, fluorapatite, tétra-ferriphlogopite, rimkorolgite, catapléiite...phoscoritic rock composed of forsterite, clinohumite, fluorapatite, magnetite, phlogopite and calcite. The carbonatite...body. The mineral is associated with dolomite, fluorapatite, niobian anatase (?), tetra-ferriphlogopite...henrymeyerite intergrown with stubby hexagonal prisms of fluorapatite and dolomite rhombohedra. Width of field of |  | 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 |  | 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) | | series, Cc: calcite, Cpx: clinopyroxene, FAp: fluorapatite, GA: andradite, GS: schorlomite, Me: strontian...rock are K-feldspar, titanite, calcite, pyrite, fluorapatite, barian biotite, Ba-bearing K-feldspar, ilmenite...accessory phases present are sodalite, cancrinite, fluorapatite (1.2–1.8 wt.% SrO), barytolamprophyllite, manganoan...inclusions of analcime together with slawsonite, fluorapatite, and calcite. In a few cases, minute relics...(UK), and Tony Nikischer (Excalibur Mineral Corp., USA) for providing stronalsite and banalsite samples |  | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | 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...contact with astrophyllite. IP Amphibole in the pegmatite sample MEPB37C is arfvedsonite of similar composition |  | | 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 |  | 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...medium-grained texture with biotite-rich lenses. Pegmatite pods and microgranites occur in the Little Hohonu...5). The QAF syenite, cross-cutting veins, and pegmatite have the lowest ƩREE. Mafic dikes are generally...zircon and apatite has occurred. Apatite and fluorapatite in the mafic-rich granite (GR03) contain F and |  | 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...nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineral Petrol 67: 85–110 Deer...Strontium in the apatite structure: strontian fluorapatite and belovite – (Ce). Can Mineral 38: 839–845...Semail Ophiolite in the Dibba Zone, Northern Oman Mountains. In: Peters TJ, Nicolas A, Coleman RG (eds) Ophiolite |  | | Journal (article/letter/editorial) | | (Ba), corundum (Al), manganoan fayalite (Mn), fluorapatite (P), ilmenite (Fe and Ti), jadeite (Na), loparite-(Ce)...Petrographic and chemical characteristics of the Panda Hill carbonatite complex, Tanzania. J. Afr. Earth Sci...nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineral. Petrol. 67, 85-110. GILBERT...alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic...(1958): Cerite from Mountain Pass, San Bernardino County, California. Am. Mineral. 43, 460-475. H EAMAN |  | | 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 |
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