 | | Journal (article/letter/editorial) | | the known rare earth elements (REE), Ti and Li occurrences and exploration potential in Finland, based on...LamujĂ€rvi, and Iivaara), rapakivi granite and pegmatite (Kovela), and kaolin-bearing weathering crusts...vanadium mine. For several years, Rare Element (RE)-pegmatite of the Kaustinen and SomeroâTammela areas has...Geological Survey of Finland (GTK). At Kaustinen, Li-pegmatite occurs as subparallel dyke swarms in an area of...metavolcanic rocks. Li pegmatite contains more than 10% spodumene as megacrysts (1â10 cm), albite, quartz, K-feldspar |  | | 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...numerous crystal pockets, associated with small albite crystals; the platy, flattened-rhombohedral ilmenite...Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially stilbite), whereas...of Amsteg, subordinate drainages running south to Val Caverdiras; ilmenite rose-bearing clefts are found |  | | Report (issue) | | garnet, spinel and topaz are known from scattered occurrences, but their potential has never been tested. The...Greenland geological environment, not least the pegmatite occurrence, is definite justification for more...pinkish diamonds from Garnet Lake. 2 Diamond occurrences in southern West Greenland . 53°W 52°W 51°W...well-known from the 600 Ma old North Atlantic province of carbonatites and ultramafic alkaline magmatism...of a reasonable potential for diamonds in the province. In the Sarfartoq area the 2006 results illustrate |  | | Journal (article/letter/editorial) | | commonly associated minerals are beryl, apatite, albite, muscovite, potassic feldspar, and quartz in the...its broad distribution, only those spessartine occurrences furnishing good specimens or important gem rough...spessartine masses to 2 cm across occur in blocky albite in the Keith quarry at Auburn, Maine. Analyses...also in Amelia County, and from the Herbb No. 2 pegmatite near Flat Rock, Powhatan County, Virginia (Dietrich...(center). Another fine Little 3 mine spessartine on albite. The 3.8-cm-wide specimen is in the Mike Keim collection |  | | Journal (article/letter/editorial) | | statistical analysis applied to rare-element LCT-type pegmatite fields: an original approach to constrain faultsâ...emplacement of LCT-type (LithiumâCesiumâTantalum) pegmatite fields and their relationships with host rocks...both i) the spatial distribution of the pegmatite occurrences, including their grouping/ scattering and...trending faults family; with 50 % of the pegmatite occurrences located less than 500 m away from one of...out a lack of spatial link between each of the pegmatite subtypes and several potential granitic sources |  | SĂĄnchez-Muñoz, Luis, MĂŒller, Axel, AndrĂ©s, Sol LĂłpez, Martin, Robert F., Modreski, Peter J., de Moura, Odulio J.M. (2017) The PâFe diagram for K-feldspars: A preliminary approach in the discrimination of pegmatites. Lithos, 272. 116-127 doi:10.1016/j.lithos.2016.10.030 | Journal (article/letter/editorial) | | orogens, such as in the Eastern Brazilian Pegmatite Province as the result of the collision of cratons...significant departures from the bulk composition of the pegmatite-forming magma. Yet there is a pressing need to...representative alkali feldspar from 31 carefully evaluated pegmatite localities covering a wide range of mineralogy...MANUSCRIPT geologist mapping uncharted territory in a pegmatite district. Our aim in this research is to test...be used as a measurable criterion for RI PT pegmatite discrimination, and to suggest elements that are |  | | Journal (article/letter/editorial) | | Tools and Workflows for Grassroots LiâCsâTa (LCT) Pegmatite Exploration Benedikt M. Steiner Camborne School... This paper reviews the main controls of LCT pegmatite genesis relevant to mineral exploration programs...as industrial mineral deposits. Keywords: LCT; pegmatite; lithium; exploration; targeting 1. Introduction...decades research into rare metal LiâCsâTa (LCT) pegmatite mineralisation has predominantly focused on the...mineral exploration techniques applied to LCT pegmatite mineralisation have been published, covering (i) |  | | Journal (article/letter/editorial) | | the Brunswick pegmatite field and the Central Maine Synclinorium of the Oxford pegmatite field, in Maine...characteristics (e.g., Topsham area of the Brunswick pegmatite field). Significant chemical-compositional and...Brunswick and Oxford pegmatite fields. Columbite-group minerals from the Brunswick pegmatite field mainly consist...The structural state of CGM from the Brunswick pegmatite field ranges from highly cation-disordered to...predominantly highly ordered CGM in the Oxford pegmatite field. Limited concurrent fractionation of Mn |  | | Journal (issue) | | labels for displays, and (5) those 1 Not all Dana occurrences have been verified in recent times. 2 Some localities...Fluorite, Bertrandite, Muscovite, Orthoclase, Topaz, Albite, Columbite) Ruby Mountain Nathrop (Spessartine...(Quartz var. Smoky, Topaz, Microcline var. Amazonite, Albite, Cassiterite, Ellsworthite, Columbite) Longhollow...Bastnaesite, Fluorcerite, Columbite, Fluorite, Albite) Eureka Tunnel Colorado Springs, St. Peters Dome...Prosopite, Arfedsonite, Mircocline, Quartz var. Smoky, Albite, Loellingite) Stove Mountain (Cookstove Mountain) |  | | Journal (article/letter/editorial) | | Pilbara pegmatite province in the Archean North Pilbara Craton contains at least 120 pegmatite deposits...deposits in over 27 pegmatite groups and fields, including the giant Mount Cassiterite tantalum orebody in...in the Wodgina pegmatite district. Generally, rare metal pegmatites in the province are hosted by mafic-ultramafic...that have given rise to different petrogenetic pegmatite suites can be identified in processed radiometric...character that permitted formation of significant pegmatite mineralization. They represent the culmination |  | | Book | | synthe- including gems, the and on natural occurrences, collectorâs specimens, John scholarly monograph...Fertil78 ity, Fevers and 131 France, 77 127 130 Italy, Poisons and Venomous Bites, Pregnancy, 127 ... Mexico, 480 Mongolian 507 Sudan, 508 456 Italy, 456 Kenya, (Namibia), 501 507 Spain, 445 ...AZ; Allan Caplan, CA; Giorgio Graziani, Rome, Italy; Harry Winston, Inc., New York, NY; Hoover, have...Van Pelt, Murphy, Los New Pagano, Monfalcone, Italy; Sanchez, E. Fallbrook, Scripps, Vienna, Angeles |  | | Book | | affects its present characteristics as a minera1 province, because of the exposure of the various depth...H H O H Ctf c/3 O H DEEP LEVEL aplite, pegmatite foliated, gneissic, migmatitic granite Ï pc...70-100% contribution from melts derived from the upper mantle above subduction zones" (Brown, 1979). To...leucocratic equivalents, polymineralic (e.g. aplite, pegmatite) or monomineralic (vein quartz); and (3) lamprophyres...by stoping or cauldron subsidence into a passive upper crust comprising (1) marine "eugeoclinal" volcanic-sedimentary |  | | Journal (article/letter/editorial) | | jahnsiteâwhiteite groups from the Mount Wills pegmatite ïŹeld, Victoria, Australia WILLIAM D. BIRCH* Geosciences...Knocker dykes are the most fractionated in the pegmatite ïŹeld derived from late-stage melts of the Late...jahnsiteâwhiteite; FeâMn phosphates; granite pegmatite; Mount Wills; Victoria. 40 km north of Omeo,...operations (Fig. S1 and Fig. 2). However, the pegmatite dyke ïŹeld extends for nearly 60 km, between Glen...as more than 200 small leases over individual pegmatite dykes were taken up (Cochrane & Bowen, 1971). |  | | Book | | another oxide, "yttria", from minerals found in the pegmatite at Ytterby, Sweden. Both supposed oxides were...Swedish ehernist Ekeberg in the eourse of analyzing pegmatite minerals from Ytterby, Sweden and Kimito, Finland...minerals from the same loeality, the farnaus pegmatite at Ytterby, Swcden. This faet stresses the geoehemieal...(with 3 Figures) . . 189 Characteristics of Pegmatite Deposits of Tantalum. P. Cerny (with 18 Figures).... 266 Exploration Strategy and Methods for Pegmatite Deposits of Tantalum. P. Cerny (with 15 Figures) |  | | Journal (article/letter/editorial) | | Mineralogische und geochemische Untersuchung einiger Pegmatite aus der Gegend yon Mashad, Nordost-Iran In einer...Minerale Beryll und Cotumbit wurden beobachtet. Die Pegmatite dieser Gegend k6nnten sich folglich als potentielle...Introduction There are only a few k n o w n pegmatite occurrences in Iran and there is practically no i n...much restricted. More than a hundred samples of pegmatite from different localities of the Mashad area have...internal standards. Geological Setting The pegmatite occurrences in the Mashad area are part of a granite |  | Schaltegger, U., Ulianov, A., Muntener, O., Ovtcharova, M., Peytcheva, I., Vonlanthen, P., Vennemann, T., Antognini, M., Girlanda, F. (2015) Megacrystic zircon with planar fractures in miaskite-type nepheline pegmatites formed at high pressures in the lower crust (Ivrea Zone, southern Alps, Switzerland) American Mineralogist, 100 (1) 83-94 doi:10.2138/am-2015-4773 | Journal (article/letter/editorial) | | enriched, lithospheric mantle. Keywords: Miaskitic pegmatite, zircon megacrysts, U-Pb, planar fractures, southern... Andersen et al. 2010) and the Gardar rifting province of Greenland (Upton and Emeleus 1987). Zircon...zircon-bearing miaskitic, alkaline pegmatite, while known occurrences linked to nepheline-syenite intrusions...result from sudden volatile release in the host pegmatite and discuss whether they may have acted as diffusion...(Centovalli area, southern Switzerland/northern Italy; Fig. 1). This complex is included in the high-grade |  | | 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...(âpocketsâ) as aggregates of radial platy crystals with albite, as fracture-fillings in microcline and as fine-grained...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 |  | | Journal (volume) | | . . . . . . . . . . . . . . . . . 14 PEGMATITE OCCURRENCES . .. .. . ...............................18 THE PEGMATITE OCCURRENCE OF LUOLAMĂKI . . . . . . . . . . . . . . . . . . . 19 PEGMATITE OCCURENCES...to occur in connection with synorogenie rocks. Pegmatite dikes and lumps containing beryl are found mostly...coarse-grained varieties of granite, i.e., pegmatite occurrences. It was in 1956 that the Geological Survey...Finland undertook to investigate and map out pegmatite occurrences as part of its systematic work program. |  | | Book | | affects its present characteristics as a mineral province, because of the exposure of the various depth...monzonlte, d i o r i t e O 3 DEEP LEVEL aplite, pegmatite foliated, gneissic, migmatitic granite Pi Q...70-100% contribution from melts derived from the upper mantle above subduction zones" (Brown, 1979). To...leucocratic equivalents, polymineralic (e.g. aplite, pegmatite) or monomineralic (vein quartz); and (3) lamprophyres...by stoping or cauldron subsidence into a passive upper crust comprising (1) marine "eugeoclinal" volcanic-sedimentary |  | | Journal (issue) | | .............191 by R. P. Richards Amethyst occurrences of the eastern United S ta tes.................Ontario: an occurrence of large nepheline, biotite and albite-antiperthite crystals in calcite-cored vein-dikes...plants and animals, and A. E. Fersman pioneered in pegmatite geochemistry, subjects which later were to elicit...alpine mineral assemblage, which typically includes albite, adularia, calcite, chlorite minerals and anatase...which more typical quartz may be common, such as pegmatite veins or cavities in sedimentary rock. The localities |  | Dâyachkov, Boris A., Bissatova, Ainel Y., Mizernaya, Marina A., Khromykh, Sergey V., Oitseva, Tatiana A., Kuzmina, Oxana N., Zimanovskaya, Natalya A., Aitbayeva, Saltanat S. (2021) Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan. Minerals, 11 (3) 253 doi:10.3390/min11030253 | Journal (article/letter/editorial) | | gravity and flotation methods. Multistage raremetal pegmatite mineralization can be predicted from the presence...such elements as Ta, Nb, Be, Li, Cs, and Sn. Pegmatite veins bear diverse Ta minerals (columbite, tantalite-columbite...rare metals late during the evolution of the pegmatite magmatic system. The discovered mineralogical...Numbers 1 to 11 are gold (1â9) and pegmatite (10,11) deposits and occurrences (see legend). The Great Altai...Altai metallogenic province comprises four parallel NW ore zones with their main mineralization types that |  | | Report (issue) | | of Use. Content: This Content is offered by the Province of Ontarioâs Ministry of Northern Development...DĂ©veloppement du Nord et des Mines (MDNM) de la province de l'Ontario. Les recommandations et les opinions................. 27 PEGMATITES OF THE GRENVILLE PROVINCE.................... 28 TERMINOLOGY..............Level........................... Past/Potential Pegmatite Commodities..................... Potassium Feldspar...Pegmatites.... Pegmatite Generation Processes............. "Ideal" Pegmatite Zoning.. Current Pegmatite Classifications |  | | Journal (article/letter/editorial) | | belt. Another characteristic. lithiumbearing pegmatite procince is lound in the basement rocks o f Zimbabwe...Cassiterite 1. Introduction Although the major granite pegmatite regions of Africa have been known for a long time...demand. The present study reviews the principal pegmatite regions in Africa, where extensive mining of minerals...paid t o the mineralogy and geochemistry of the pegmatite deposits, and in particular t o tin and tantalum...the senior author has investigated numerous occurrences in the course of some thirty years. Mineralized |  | | Journal (article/letter/editorial) | | University] at 13:51 05 January 2015 Abstract Pegmatite deposits commonly occur in the 1500 km long, N-S-trending...migmatite, granitoid gneiss, gneiss, and schist. The pegmatite veins and dikes are mostly 2 to 5 meters wide...pegmatites are composed of quartz, orthoclase, albite, microcline microperthite, and muscovite, with...The zoning pattern is rather distinct in the pegmatite body, where tourmaline is present. The light-colored...230° to 410°C. Salinities of fluid inclusions in pegmatite minerals yielded from 1.0 to 10.8 NaCl equiv. |  | KĂŒster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, OberthĂŒr, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, UâPb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 | Journal (article/letter/editorial) | | 1007/s00126-009-0240-8 ARTICLE The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, UâPb age...Springer-Verlag 2009 Abstract The Kenticha rare-element pegmatite, a globally important tantalite source in the...corresponds to the spodumene subtype of the rareelement pegmatite class and belongs to the lithiumâcesiumâ tantalum...tantalum petrogenetic family. The Kenticha pegmatite is asymmetrically zoned from bottom to top into granitic...spodumene-bearing upper zone. A monomineralic quartz unit is discontinuously developed within the upper zone. Whole-rock |
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