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Two-mica and biotite granites in the Weitra-Nové Hrady area, Austria - Czech Republic
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The South Bohemian Pluton consists, in traditional view, of three major granite suites - the Weinsberg, Eisgarn, and Freistadt suites. In reality, the composition of the pluton is even more complicated than this subdivision would suggest. For instance, in the area among towns of Weitra, Freistadt and Nové Hrady, besides the clearly defined Weinsberg granite, four additional granite types have been distinguished on the basis of their field relations, petrology, whole-rock and isotope geochemistry: (1) medium-grained, locally porphyritic peraluminous two-mica Zofin granite, 324 ± 14 Ma old ...
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Primary lithological variation in the kaolinized St Austell Granite, Cornwall, England
; ...element chemical data suggest that the biotite granite-lithium-mica granitetourmaline granite...being products of differentiation of biotite granite magma, the topaz granite melts may...located in granite varieties other than biotite granite. The geochemical parameters used to...
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Cryptic trace-element variation as an indicator f reverse zoning in a granitic pluton: The Ricany granite, Czech Republic
; ...northeastern part of the Hercynian Central Bohemian Pluton to be a reversely zoned, high-level...of emplacement. Keywords: Central Bohemian Pluton, emplacement, geochemistry, granites...northernmost part of the Hercynian Central Bohemian Pluton, and demonstrate that despite its...
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Abstracts of new mineral descriptions.
; ...N, Long. 61[degrees]03' E). Occurrence: In cavities of a granite pegmatite of muscovite-albitemicrocline type which cuts biotite granite-gneisses and porphyry granites. Associated minerals are: muscovite, quartz, elbaite, topaz, milarite, calcite, chabazite...
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Forsys Announces Joly Zone Trenching Results
; ...feasibility study is underway. The results confirm uranium mineralization in Valencia-type alaskite variably intruded by biotite granite. This assemblage has been identified over a 1.5 km strike length and remains open in all directions. Results have been received...
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Emplacement of the Fogo Island Batholith, Newfoundland.
; ...cleavage, probably served as feeders. The upper 3-4 km of the sill comprise homogeneous to slightly zoned, coarse, hastingsite-biotite granite. Ignimbrite sheets of similar composition above the sill suggest that the granite was emplaced beneath cover rocks no more...
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Volatile phase fluxed anatexis of metasediments during late Caledonian ophiolite obduction: Evidence from the Sogneskollen Granitic Complex, West Norway
; ...The main part of the Sogneskollen Granitic Complex is a white composite granodiorite which is intruded by a suite of grey biotite-granite dykes. It is suggested that this, and other similar granitic sheets in the area, most probably formed by melting of sediments...
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The dyke swarm of fractionated tourmaline-bearing leucogranite and its link to the Vydra Pluton (Moldanubian Batholith), Sumava Mts., Czech Republic
; ...from the Vydra Pluton - two-mica granite (19, 45, 46) and biotite granite (51) were analyzed for bulk chemistry (Tables 1, 2). Five...the mapped area (11 leucogranite, 8 two-mica granite, 17 biotite granite) along with additional measurements in other, mostly metamorphic...
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Supergene minerals in the Horní Slavkov uranium ore district, Czech Republic/Supergenní minerály uranového rudního revíru Horní Slavkov, Ceská republika
; ...contact with orthogneiss. The Variscan granite pluton below the roof pendant includes two main granite types: the older biotite granite of the "Horsk" type (Older intrusive complex - OIC) and younger autometamorphic granite of the "Krusnohorsk" type (Younger...
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Geological Structure of the Czech Republic Depicted by the New Gravity and Magnetic Field Images
; ...anomaly is caused by the Ricany (adamelite) granite body situated 30 km ESE of Prague in the northern margin of the Central Bohemian Pluton. The most remarkable positive residual anomalies are produced by basic bodies such as the central part of the Doupov Mts...
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Pb - Zn - Cu mineralization in the historical Broumov - Tri Sekery mining district (Western Bohemia)
; ...batches (Siebel et al. 1997): 340-325 Ma (redwitzite and quartz diorite of the Bor and Leuchtenberg massifs); 325-315 Ma (biotite granite, monzogranite and leucogranite in the vicinity of Falkenberg, Flossenbrg and Rozvadov); and 325-305 Ma (syenogranite and...
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