| | Journal (article/letter/editorial) | from the A-type El Portezuelo Granite and related pegmatites, Catamarca (NW Argentina) Fernando COLOMBO1...DORAIS3 1 2 3 * CONICET-Museo de MineralogĂa “Dr Stelzner” – Facultad de Ciencias Exactas, FĂsicas y Naturales...Universidad Nacional de CĂłrdoba, VĂ©lez Sarsfield 299 (5000) CĂłrdoba, Argentina; fosfatos@yahoo.com.ar...ar Current address: Cátedra de GeologĂa General, Facultad de Ciencias Exactas, FĂsicas y Naturales, Universidad...Universidad Nacional de CĂłrdoba, VĂ©lez Sarsfield 1611 (X5016GCA) CĂłrdoba, Argentina Department of Geological | | | Journal (article/letter/editorial) | figures and 12 tables Abstract: Granitic beryl-columbite-phosphate subtype aplite-pegmatite veins and sills...intruded a biotite > muscovite granite which is related to another two-mica granite. Variation diagrams of major...muscovite granite and aplite-pegmatite veins and sills are derived from the earlier two-mica granite magma...polylithionite and rare lepidolite), cassiterite, columbite-tantalite, fluorapatite and triplite. In aplite-pegmatites...micas replace lithian muscovite. Complexely zoned columbite crystals are chemically characterized and attributed |
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