 | | Journal (article/letter/editorial) | | constitutes an important gangue mineral, and such occurrences have themselves been sources of fine specimens...crystals are severely flattened when included in muscovite. Almandine is one of fifteen minerals in the garnet... kyanite, andalusite, sillimanite, chlorite, muscovite, biotite, and the plagioclase, amphibole, and...about 9 cm across and occurred in groups and on a pegmatite matrix. Relative to this occurrence, Emerson (1895)...almandine-spessartine specimen from the Frank Steidler pegmatite, Valley Township, Chester County, Pennsylvania |  | | 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...Paleoproterozoic mica schists and metavolcanic rocks. Li pegmatite contains more than 10% spodumene as megacrysts |  | | 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) | | 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 (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) | | 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 |  | | Journal (article/letter/editorial) | | associated minerals are beryl, apatite, albite, muscovite, potassic feldspar, and quartz in the former,...its broad distribution, only those spessartine occurrences furnishing good specimens or important gem rough...also in Amelia County, and from the Herbb No. 2 pegmatite near Flat Rock, Powhatan County, Virginia (Dietrich...in good specimens from most, if not all, such occurrences. It is, however, locally associated with and...Ytrrian spessartine occurs in the Brown Derby pegmatite in the Ohio Creek district, Gunnison County. Roberts |  | | Report (issue) | | genesis and general economic potential of pegmatite occurrences in Greenland. Field observations, archive...presentation. The prospective areas for pegmatite-hosted mineral occurrences in Greenland are outlined, and examples...examples of prominent pegmatite minerals are demonstrated. Pink pegmatite related to the QĂŽrqut granite...unknown at present. In a broader sense, the term pegmatite is used for any coarse-grained vein of granitic...mica are used as industrial minerals. Several pegmatite mineral species may also be used as gemstones |  | | 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. |  | | 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 |  | 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) | | pegmatites with quartz, subsolvus feldspars, and muscovite as the major primary minerals. RI Finally, group...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 |  | | 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 |  | | 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 |  | | 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). |  | | Journal (article/letter/editorial) | | asymmetrical intermediate zone of coarse-grained muscovite, quartz, microcline and minor plagioclase, and...medium-grained microcline, quartz, plagioclase and muscovite. The zones contain abundant beryl and F-apatite...peraluminen, S-Typ Graniten in Verbindung. Die Pegmatite sind zoniert und besitzen einen inneren Quarzkern...fluid inclusion history and its implications for pegmatite emplacement and subsolidus history is given in...Olary Block of eastern South Australia comprises upper greenschist to amphibolite grade metamorphosed and |  | | 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) | | are also probably of that age. The Strickland pegmatite at Portland, Connecticut, the near-by Hale deposit...Mountain pegmatite at Woburn, Massachusetts,are Devonian in age.7The famous Bedford pegmatite in WestchesterCounty...occur on Mount Royal, Montreal. Intrusions of pegmatite accompanied Paleozoic ore deposition in widely...Paleozoic granites of western Spain.12Tin-bearing pegmatite dikes in eastern Victoria cut the Silurian metamorphic...la Reid, A. Mclntosh, The mining fields of Morina, Mt. Claude, and Lorinna: Tasmania Geol.Surt:ey,Bull |  | | Report (issue) | | France dâOutre-Mer CAMP Central Atlantic Magmatic Province CGIAR-CSI Consultative Group on International...Reserves Committee (Australasian) LIP Large Igneous Province LREE Light rare-earth element METI Ministry...documents and the National inventory of mineral occurrences suggests that resources of U, Th, Nb, Ta, Be...Richat carbonatite complex, but that all other occurrences of U, Th, REE, and associated elements are poorly....................................... 2 4.1.1 Pegmatite Veins of the Tasiast-Tijirit Terrane ........ | | | Report (issue) | | France dâOutre-Mer CAMP Central Atlantic Magmatic Province CGIAR-CSI Consultative Group on International...Reserves Committee (Australasian) LIP Large Igneous Province LREE Light rare-earth element METI Ministry...documents and the National inventory of mineral occurrences suggests that resources of U, Th, Nb, Ta, Be...Richat carbonatite complex, but that all other occurrences of U, Th, REE, and associated elements are poorly....................................... 2 4.1.1 Pegmatite Veins of the Tasiast-Tijirit Terrane ........ |  | | Journal (issue) | | labels for displays, and (5) those 1 Not all Dana occurrences have been verified in recent times. 2 Some localities...Phenakite, Quartz var. Smoky, Fluorite, Bertrandite, Muscovite, Orthoclase, Topaz, Albite, Columbite) Ruby Mountain...Park Area (Feldspar, Beryl, Tourmaline, Quartz, Muscovite, Biotite, Columbite) GILPIN COUNTY Bellman mine...mine Powerhorn, Cibolla District (Anatase) Scofield Pass Gothic (Orthoclase var. Sanadine) Vulcan mine Vulcan...Rhodochrosite, Quartz) JEFFERSON COUNTY Bigger Pegmatite mine Morrison (Bertrandite, Beryl, Bismuthinite |  | | 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...microcline and as fine-grained anhedral flakes with muscovite. Berthierine samples from all associations are...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 |  | | 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) | | previously been recorded only in granitic-pegmatite occurrences. Subidiomorphic monazite-(Ce) from leucosome...enrichment has generally been considered a feature of pegmatite-precipitated monazite, with the implication that...literature values from granitic and pegmatitic occurrences in Table 2. 737 Monazite-(Ce) cores in all...Average of 8 pegmatite monazites, Val Vigezzo, Italy (Demartin et al., 1991) 7 Average of 8 pegmatite monazites...monazites, Arvogno, Val Vigezzo, Italy (Mannuci et al., 1986) 8 U-rich monazite, Piona, Italy (Gramaccioli and |  | | Journal (article/letter/editorial) | | rare-metal potential is linkcd to Proterozoic pegmatite fields exccpt for the Jurassic tin-bearing ring...the Nigerian tin province in terms of economic rare-metal mineralization, occurrences of mineralized pegmatitic...according to the lithology of their host-rock. Pegmatite occurrences from southwest Nigeria. which are emplaced...rare-mctal hearing pegmatites and proximal granite occurrences was never obscrved. I t is suggested that reactivation...primary deposits. The typical pegmatoid rare-metal occurrences of the shield areas in western, central and southern |  | | 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 |
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