 | | Journal (article/letter/editorial) | | magmatic and hydrothermal fluids involved in pegmatite formation. Optical and back-scattered electron...preserved in the fiber interior, is a dark blue foitite; the blue-gray second generation varies from Fe-rich...Ca, and F during late crystallization of the pegmatite. The composition was reset to a Li-rich schorl...Keywords: fibrous tourmaline, tourmaline dissolution, foitite, elbaite, fluids, Cruzeiro mine, Minas Gerais,...elbaĂŻte rose foncĂ©, provenant de la mine Cruzeiro, province de Minas Gerais, au BrĂ©sil, permettent de reconstruire |  | | Journal (article/letter/editorial) | | compositional evolution of pegmatite-forming melts through magmatic crystallization and pegmatite melt â host-rock... At the former locality, tourmaline from the pegmatite units is essentially magmatic, whereas at the...involved the introduction of B, Li and Al from pegmatite-generated fluids to form metasomatic haloes. The...from tourmaline with a signature influenced by pegmatite â host-rock interaction. The behavior of Ca in...useful in recognizing late-stage Ca-enrichment in pegmatite-forming melts as a result of CaâF complexing, |  | Soares, D. R., Beurlen, H., Barreto, S. d. B., Da Silva, M. R. R., Ferreira, A. C. M. (2008) COMPOSITIONAL VARIATION OF TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL. The Canadian Mineralogist, 46 (5) 1097-1116 doi:10.3749/canmin.46.5.1097 | Journal (article/letter/editorial) | | TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL Dwight Rodrigues SOARES§...rare-element-class granitic pegmatites from the Borborema Pegmatite Province (BPP), northeastern Brazil. Tourmaline from...high Cu contents, up to 1.07 wt.% CuO. In other occurrences of the âParaĂba tourmalineâ in the BPP, up to...geochemical evolution trend of tourmalines among the pegmatite bodies investigated (vacancy at the X site, Fe...indicator of the degree of evolution of the hosting pegmatite. According to these data,âParaĂba tourmalineâ-producing |  | | Journal (article/letter/editorial) | | âŒ35 km subsequently followed by the ITD to the upper/middle crustal level (âŒ15 km depth). The PâT evolution...yielded a medium-pressureâmedium-temperature (MPâMT) metamorphic peak of 0.85â1.10 GPa at 720â780 °C...ROSSI, MONTE SPAGNOLO, AND THE 2002/03 LAVA FLOW, MT. ETNA: EVIDENCE FOR MAGMA MIXING Bauer, M.1, Ntaflos...University of Ferrara, Via Savonarola, 9, 44121 Ferrara, Italy 3 Department of Biol., Env. and Geol. Sciences,...95124 Catania, Italy e-mail: moritz.bauer96@gmail.com 2 Mt. Etna, located in Sicily, Italy, is Europeâs |  | | Journal (article/letter/editorial) | | âPOCKETâ BERTHIERINE FROM THE PULSIFER GRANITIC PEGMATITE, POLAND, MAINE, USA M I C H AE L A. W IS E Department...berthierine has been found in the Pulsifer granitic pegmatite, near Auburn, Maine. Berthierine was found in...cordierite-group minerals. Key WordsâBerthierine, Granitic Pegmatite, Miarolitic Cavity, Hydrothermal Fluids, Pulsifer...ironstones (Bhattacharyya, 1983). Non-marine occurrences of berthierine include desert and lateritic soils...triphylite-calcian beusite intergrowths. In the Hagendorf-Sud pegmatite, berthierine occurs as thin, dark green idiomorphic |  | | Journal (article/letter/editorial) | | formation of Fe-rich tourmalines (schörl, foitite) in this pegmatite was in a final stage and therefore in...quartz from miarolitic pegmatites of Kulam (Langham Province, NE Afghanistan). He concluded that the pocket...Methods Tourmaline deposits in Afghanistan The pegmatite belt of the Hindu Kush Mts. is one of the largest...mineralization occurs in the numerous miarolitic pegmatite areas in several provinces in northeastern part...(2002) reported some of tourmaline-bearing pegmatite occurrences in which the tourmaline crystals were associated |  | | Journal (issue) | | 28 million Troy ounces or about 900 metric tons (mt) of silver (Weed, 1912). The silver panic of 1892â93...same year would see the Anaconda produce about 7,300 mt of oxidized silver ore, grading 930 gm per ton in... 1957) Between 1882 and 1884 Daly shipped 34,000 mt of ore to Wales. It averaged an incredible 45% copper...smelter was completed. This facility, known as the âUpper Works,â was capable of treating 910 mtpd. A brief...fed directly to the roasting furnaces. After the Upper Works were destroyed by fire in 1889 (an all too |  | Duncan, R.J., Buick, I.S., Kobayashi, K., Wilde, A.R. (2014) Chemical and stable isotopic characteristics of syn-tectonic tourmaline from the Western fold belt, Mount Isa inlier, Queensland, Australia. Chemical Geology, 381. 131-143 doi:10.1016/j.chemgeo.2014.05.002 | Journal (article/letter/editorial) | | boron isotopes; Mount Isa; metamorphism; orogeny; pegmatite Understanding hydrothermal fluid flow events...stratabound Pb-Zn-Ag (150 Mt at 6% Pb and 7% Zn) and the breccia-hosted Cu (255 Mt at 3.3% Cu) deposits at...zone (MIFZ) peak metamorphic conditions reached upper greenschist facies at ~300 to 350 C AC (Hannan...SC similar to Pb-Pb SHRIMP zircon dates for a pegmatite hosted by the high grade metamorphic rocks west...from NU a later (syn-D3a) tourmaline-bearing pegmatite (see below; 1565 ± 5 Ma; Connors and Page, 1995) |  | | Thesis/Dissertation | | Idefjorden âTerraneâ, respectively. The Lindvikskollen pegmatite area was the focus of field work and sampling...in the area. In the case of the Lindvikskollen pegmatite, which intruded a metagabbro body and its albitized...tourmaline and bulk rock chemistry indicates that the pegmatite was probably formed by mixed partial melting of...albitite host rocks. In addition, the nearby Tangen pegmatite intrudes the same metagabbro, and its overlapping...host rock tourmaline-bearing gneiss to be the pegmatite melt source. This thesis concludes that the source |  | Keller, Paul, Roda Robles, EncarnaciĂłn, Pesquera PĂ©rez, Alfonso, Fontan, François (1999) Chemistry, paragenesis and significance of tourmaline in pegmatites of the Southern Tin Belt, central Namibia. Chemical Geology, 158 (3) 203-225 doi:10.1016/s0009-2541(99)00045-5 | Journal (article/letter/editorial) | | accepted 25 February 1999 Abstract Numerous pegmatite bodies occur in several distinct belts within...in composition depending on pegmatite type and location within the pegmatite. Electron microprobe analyses...tourmalines suggest a low oxidation state of the pegmatite-forming fluids. As the precipitation of cassiterite...distribution of tourmaline and cassiterite in different pegmatite zones. Field relations, distribution, petrographic...separated by the magneti- The numerous occurrences of pegmatite in the Damara orogen can be grouped in |  | | Journal (article/letter/editorial) | | columbiteâtantalite in the berylâcolumbite Ć ejby granitic pegmatite, Czech Republic: role of crystal-structural constraints...cz Corresponding author The simply zoned Ć ejby pegmatite of berylâcolumbite subtype is enclosed in migmatitized...trends, NbâTa and FeâMn fractionation, granitic pegmatite Received: 22 February, 2018; accepted: 27 August...is long overdue. Simply zoned berylâcolumbite pegmatite from Ć ejby near NovĂ© Hrady, southern Bohemia,...Ć ejby berylâcolumbite-subtype pegmatite. 2. Regional geology and pegmatite characterization Leucogranites |  | | Book | | William J. Brunet set out to trace three ilmenite occurrences mentioned in late 19th-century literature. One...2013). MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series...of Amsteg, subordinate drainages running south to Val Caverdiras; ilmenite rose-bearing clefts are found...Administered Tribal Areas and North West Frontier Province. Ilmenite crystal clusters to 12 cm across have...Mountain, Warsak district, North West Frontier Province. Surface diggings worked by local people on Zagi |  | | Journal (article/letter/editorial) | | associated mineral zones in the hybrid ultramafic-pegmatite association of the neoproterozoic hafafit core...associated mineral zones in the hybrid ultramafic-pegmatite association of the Neoproterozoic Hafafit core...mineral zones are well developed when the granitic pegmatite veins cross-cut through ultramafic rocks at the...whereas the second group related to the pegmatite veins (pegmatite-related zones) comprises hercynite- and...zones. Tourmaline-rich zone only occurs when the pegmatite veins come in contact between ultramafic rocks |  | Novak, M., Skoda, R., Gadas, P., Krmicek, L., Cerny, P. (2012) Contrasting Origins of the Mixed (NYF + LCT) Signature in Granitic Pegmatites, with Examples from the Moldanubian Zone, Czech Republic. The Canadian Mineralogist, 50 (4) 1077-1094 doi:10.3749/canmin.50.4.1077 | Journal (article/letter/editorial) | | Li-bearing (lithium micas + elbaite) Kracovice pegmatite, with âamazoniteâ, samarskite and fergusonite...is the product of the strong fractionation of pegmatite-forming melt derived from the orogenic I-type...graniteâ pegmatite system of the TĆebĂÄ pluton and the mainly Li-bearing Kracovice pegmatite are typical...petrogenetic family. The contaminated elbaite-subtype pegmatite BliĆŸnĂĄ I, ÄeskĂœ Krumlov Unit, with lithium tourmalines...contamination with Ca, Mg and REE of an evolved (LCT) pegmatite-forming melt by distal carbonatite-like marbles |  | ÄopjakovĂĄ, R., Ć koda, R., VaĆĄinovĂĄ GaliovĂĄ, M., NovĂĄk, M. (2013) Distributions of Y + REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the TĆebĂÄ Pluton, Moldanubian Zone, Czech Republic. Journal of GEOsciences, 58 (2) 113-131 | Journal (article/letter/editorial) | | contents of Sc compared to the analyzed host pegmatite units (less than 1 ppm Sc). The contents of Sc...P2O5) and Ca contents (< 0.8 wt. % CaO) in host pegmatite unit preventing precipitation of Y + REE phosphates...(evolved euxenite-type and mixed (NYF + LCT) pegmatite) show a depletion in REE and Sc with progressive...concentrations of Y + REE and REE patterns in relation to pegmatite family (LCT or NYF), degree of fractionation,...PozÄĂĄtky â Kracovice NYF pegmatites NYF + LCT mixed pegmatite Fig. 1 Schematic map of the TĆebĂÄ Pluton. Open |  | | Book | | Helvetica Printedand bound by L.E.G.OSpA, Vicenza, Italy CONTENTS Preface ...............................MB/ are a series of maps to give the mineral occurrences both a spatial and geological context, and some..."British" species. A further 11 British first occurrences have since been recorded from specimens held...species to his increasing list of British first occurrences. What went unnoticed at the time was that the... so that the context of many of the mineral occurrences can be better understood. The accompanying figures |  | | Conference Proceedings (Volume) | | & Nigel J. Cook The Nihe iron deposit, Anhui Province, eastern China: skarn, IOCG or porphyritic iron...the ages of Baiyanghe Be-U deposit in Xinjiang province, northwest China ..............................modelling of the Nb-Ta-Sn mineralised Gatumba pegmatite field (Rwanda) .................................J.C.Ă. Andersen & R.K. Shail The carbonatites of Mt. Vulture as a (re)source of rare earth elements ...Hartmut Beurlen & Karel Breiter Contributions to pegmatite exploration within granitic plutons in central |  | | Book (volume) | | from the pale rectangular step cut amethyst (left, upper group) which measures about 25 mm (1 in.) across...Press Publishing Company P.O. Box 2399, Missoula, MT 59806 1-800-234-5308 + IDE DS AED 3) June Culp...various places, especially in regard to diamond occurrences which promise to make the North American continent... Patricia Gray, Graystone Enterprises, Missoula, MT; William D. Gregorio, Fayetteville, PA; Jeanne Gurski...Duane L. Johnson, Rocky Mountain Soapstone, Butte, MT; Chris I. Johnston, Royal, AR; Robert W. Jones, Scottsdale |  | | Journal (volume) | | (Romania) (Slovakia) (China) (Germany) (Poland) (Italy) (Czech Republic) (Romania/USA) (Germany) (Hungary)...extra-terrestrial nanodiamonds: Recent progress in the occurrences, structures and uses...797 13. THERMODYNAMICS...lateral eruption started March 20 at the FimmvörĂ°uhĂĄls pass. Relatively primitive olivine and plagioclase bearing...a vast range of geologic environments from the upper mantle through to the near surface environment....with NC pyrrhotite. For single phase pyrrhotite occurrences in this study, 4C pyrrhotite was more Ni-rich |  | | Book (volume) | | .......... 315 Duane L. Leavitt The Bennett Pegmatite, Oxford County, Maine . ........................and New England geological and mineralogical occurrences, as well as on ornithological and botanical topics...first visit to the tourmaline-bearing granite pegmatite at Mount Mica in 1952 and Gene eventually completed...thesis on the famous tourmalinebearing Himalaya pegmatite at Mesa Grande, San Diego County, California....where, through a translator, he was advising pegmatite miners about recovering useful minerals and began |  | | Book | | Sciences Harald G. Dill The HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen...com/series/7377 Harald G. Dill The Hagendorf-Pleystein Province: the Center of Pegmatites in an Ensialic Orogen...quartz at the core of the pegmatite is concerned. In comparison with other pegmatite deposits in the area...area, however, the Hagendorf-Pleystein Pegmatite Province (HPPP) is not only the largest concentration of...everything has been told about this prominent pegmatite. Professor Strunz was a generous and open-minded |  | | Book | | Geological Outlook Genetic Types of Mineral Occurrences References 15 20 28 Mineralogical Regions Czech...mineral species, and their prime or significant occurrences, are given for each of the 1.000 mineral species...Budapest), for critical comments about mineral occurrences. TĂmea SzabĂł (Herman OttĂł Mu seum), for compilation...Galli. (iiovanna Vezzalini (University of Modena. Italy). Prof. Mykola Shcherbak (Institute of Mineralogy...epigenetic overprints. The most significant mineral occurrences in the West Carpathians include: iron sul phides | | | Book | | mineral species. and their prime or significant occurrences. are given for each of 1he 1.000 mineral species...Budapest). for critical comments about mineral occurrences. Timea Szab6 (Herman Ott6 Mueum). for compilation...Galli. Giovanna Vezzalini (University of Modena. Italy). Prof. Mykola Shcherbak (lnsti1u1e of Mineralogy...host different types of mineral deposits, or occurrences, as a function of their relationship to the primary...Mississippi Valley-type depo its are noted in the Rodna Mt . (e.g. Blazna Valley). The Lower Cambrian ore belt |  | | Conference Proceedings (Volume) | | ore-bearing intrusions in the Emeishan large igneous province ......................................... 975...superdomain: a new metallotect within the Superior Province ................................................two orebodies in the Jinchuan intrusion, Gansu province, NW China . . ....................... 1032 ... Strontium isotope disequilibrium of plagioclase in the upper critical zone of the Bushveld complex: evidence...boron isotope composition of tourmaline from the Val-dâOr orogenic gold deposits, QuĂ©bec, Canada .... |  | | Journal (issue) | | are field trips to the world-famous Pala gem pegmatite district in San Diego County. These excursions...19.90 ct dropshape tourmaline is from Nigeria (upper right, courtesy of Frank Circelli, Bellagem, Duluth...AGTA-Gemological Testing Center (U.S.), CISGEM (Italy), GAAJ Laboratory (Japan), GIA Laboratory (USA)...Gemstone Association (ICA) Congress, Abano Therme, Italy, May 16â19. BrandstĂ€tter F., Niedermayr G. (1994)...Diamond: Fire Pyrope from the Dora Maira Massif, Italy Jeremejevite: A Gemological Update Winter 2001 An |
|
