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Classification of Granitic Pegmatites and Pegmatite-Bearing Granitic Systems
Geology of Ore Deposits, 2018The paper discusses the concepts of pegmatitic rocks, pegmatite and pegmatoid bodies, and classification of granitic pegmatites and their relationships with various types of granite. Six types of pegmatitebearing granitic systems (PGS) are proposed: (I–PGS) granitic series with normal alkalinity in the form of central-type plutons with crystal-bearing ...
S. M. Beskin, Yu. B. Marin
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Elements, 2012
Virtually every conceivable model to explain the internal evolution of granitic pegmatites had been proposed by the 1920s. Two of these hypotheses have prevailed: (1) the fractional crystallization of flux-bearing granitic melt inward from the margins of the pegmatite body to the center, and (2) the buoyant separation of an aqueous fluid from the ...
D. London, G. B. Morgan
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Virtually every conceivable model to explain the internal evolution of granitic pegmatites had been proposed by the 1920s. Two of these hypotheses have prevailed: (1) the fractional crystallization of flux-bearing granitic melt inward from the margins of the pegmatite body to the center, and (2) the buoyant separation of an aqueous fluid from the ...
D. London, G. B. Morgan
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Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 1996
ABSTRACT:The primary focus of this review is onP-Tconditions, mineralogical indicators of melt or fluid composition and textural evolution; lesser treatment is given to pegmatite sources or to pegmatite-wallrock interactions. Investigations of stable and radiogenic isotopes have revealed that the source materials for pegmatites are likely to be more ...
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ABSTRACT:The primary focus of this review is onP-Tconditions, mineralogical indicators of melt or fluid composition and textural evolution; lesser treatment is given to pegmatite sources or to pegmatite-wallrock interactions. Investigations of stable and radiogenic isotopes have revealed that the source materials for pegmatites are likely to be more ...
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Economic Geology, 1957
Concludes that structural features and zonal distribution of such minerals as mica, magnetite, columbite, and beryl in a zoned pegmatite dike in gneiss of the Odara area, Travancore, India, can be attributed to progressive crystallization of a pegmatitic magma, and that there is no evidence of hydrothermal replacement.
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Concludes that structural features and zonal distribution of such minerals as mica, magnetite, columbite, and beryl in a zoned pegmatite dike in gneiss of the Odara area, Travancore, India, can be attributed to progressive crystallization of a pegmatitic magma, and that there is no evidence of hydrothermal replacement.
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