Results 211 to 220 of about 15,774 (268)
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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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Enrichment of manganese to spessartine saturation in granite-pegmatite systems
American Mineralogist, 2019The enrichment of manganese in peraluminous (S-type) granitic melts beginning with the anatexis of metapelitic rock and ending with the crystallization of highly evolved pegmatites is explained using experimentally derived mineral-melt partition ...
J. Iv, D. London, J. Icenhower
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Discovery of the Qongjiagang giant lithium pegmatite deposit in Himalaya, Tibet, China
Yanshi - xuebao : jikan, 2021Qin Kezhang +3 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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Economic Geology, 1950
Uranium and rare-earth minerals are common accessory minerals in pegmatite deposits. No domestic pegmatites have been found that are rich enough to support an economic mining operation for uranium alone; however, small quantities of uranium minerals may be recovered as by-products of feldspar or mica mining.
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Uranium and rare-earth minerals are common accessory minerals in pegmatite deposits. No domestic pegmatites have been found that are rich enough to support an economic mining operation for uranium alone; however, small quantities of uranium minerals may be recovered as by-products of feldspar or mica mining.
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