| | Journal (article/letter/editorial) | as an essential element are found in granitic pegmatites and alkalic rocks or in hydrothermal deposits...geologic record: the oldest known is beryl in pegmatites associated with the Sinceni pluton, Swaziland...with highly fractionated rare-element granitic pegmatites and with skarns at LĂĄngban and similar deposits...Ma, which is largely attributable to granitic pegmatites (Appalachian Mountains, U.S.A., and Urals, Russia)...Mineral age, beryllium, mineral evolution, granitic pegmatites, peralkaline complexes, supercontinent cycle |
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Animikie Red Ace pegmatite, Pine River pegmatites, Fern, Florence County, Wisconsin, USA