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Rapakivi granite - Wikipedia, the free encyclopedia
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A wild rapakivi/anti-rapakivi feldspar. Core of K-spar shows plagioclase overgrowth (rapakivi) followed by partial K-spar overgrowth (anti-rapakivi). Polished sample from the Granite Mountain Batholith near Marble Falls.
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The formation of rapakivi texture, in this the type area, was examined using a variety of techniques including isotopic analyses of mineral separates from specific textural sites. ... Redistribution of the exsolved plagioclase from the alkali feldspar phenocrysts is linked to high fluorine contents of rapakivi-type magmas,
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rapakivi texture, in this the type area, was examined using a variety of ... The term 'rapakivi texture' has also been used to describe plagioclase-mantled ...
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The rapakivi texture (plagioclase-mantled K-feldspar ovoids, rounded quartz megacrysts and euhedral plagioclase megacrysts in a more fine-grained granitic ...
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KEY WORDS Rapakivi texture Alkali feldspar Magma mixing Mafic enclave ... The famous rapakivi texture-typically ovoid megacrysts of K-feldspar with a ...
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Rapakivi texture, the occurrence of oligoclase mantles on potassium feldspar grains, ... istics of rapakivi texture and the principal theories ...
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cepted igneous theory of rapakivi texture for- ... may not exhibit rapakivi texture. In this paper, the term rapakivi is used in the textural sense. ...
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Nature 224, 904 - 905 (29 November 1969); doi:10.1038/224904a ... Geology Department, California State College, Long Beach, California 90801. ... RAPAKIVI texture has rarely been reported in volcanic rocks1.
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Easter Island, Span. Isla de Pascua, Polynesian Rapa Nui, remote island (1992 pop. 2,770), 66 sq mi (171 sq km), in the South Pacific, c.2,200 mi (3,540 km) W of Chile, to which it belongs. ..... Click the link ... Rapa Nui; rapacious; Rapacki; rapakivi; rapakivi texture; Rapallo; Rapallo, Treaty; Rapallo, Treaty of;
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