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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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International Geology Review, 1968
Pegmatites of several areas are described. It is contended that their properties and relationships support Fersman's idea that pegmatites are magmatic rather than hydrothermal or metasomatic. The principal arguments are as follows: 1) contacts of the pegmatite material are sharp where it occurs in the original bides or in xenolithic fragments; 2) later
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Pegmatites of several areas are described. It is contended that their properties and relationships support Fersman's idea that pegmatites are magmatic rather than hydrothermal or metasomatic. The principal arguments are as follows: 1) contacts of the pegmatite material are sharp where it occurs in the original bides or in xenolithic fragments; 2) later
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Economic Geology, 1949
Montana pegmatites are of three main age groups: pre-Beltian, both metamorphosed and unmetamorphosed types; Laramide, associated with the Boulder batholith; and Tertiary, related to scattered alkalic stocks and small intrusives. Deposits of sillimanite, kyanite, corundum, mica, fergusonite, and chromite occur with pre-Beltian pegmatites.
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Montana pegmatites are of three main age groups: pre-Beltian, both metamorphosed and unmetamorphosed types; Laramide, associated with the Boulder batholith; and Tertiary, related to scattered alkalic stocks and small intrusives. Deposits of sillimanite, kyanite, corundum, mica, fergusonite, and chromite occur with pre-Beltian pegmatites.
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