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peralkaline

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peralkaline
peralkaline, a. Petrol. (pɜːrˈælkəlaɪn) [f. per-1 4 + alkaline a.] Of a rock: containing a high proportion of soda and potash; now spec. (see quot. 1931).1913 A. N. Winchell in Jrnl. Geol. XXI. 210 Along this co-ordinate igneous rocks are classified as normal or alkali-calcic.., alkaline, and peralk... Oxford English Dictionary
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Peralkaline rock
Another example is the peralkaline granite that forms the islet of Rockall in the North Atlantic Ocean. Peralkaline rocks are indicative of continental rift-related volcanicity (e.g. the peralkaline rhyolites of the East African Rift in central Kenya) as wikipedia.org
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peraluminous
peraluminous, a. Petrol. (pɜːrəˈl(j)uːmɪnəs) [f. per-1 4 + aluminous a.] Of a rock: (see quots. 19741 (and 1931), 1972).1927, 1931 [see peralkaline a.]. 1964 Mineral. Abstr. XVI. 488/2 A peraluminous granite stock and related pegmatites..have been emplaced in pelitic and quartzo⁓feldspathic schists.... Oxford English Dictionary
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Banalsite
Siberia, Russia; the Prairie Lake complex of alkaline rocks and carbonatites, Superior Alkaline Province, northwestern Ontario, Canada; the Pilansberg peralkaline complex, South Africa; the Sakharjok alkaline complex in the Kola Alkaline Province, Kola Peninsula of northwestern Russia (the Gremyakha–Vyrmes peralkaline wikipedia.org
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Peraluminous rock
This contrasts with peralkaline in which the alkalis are higher, metaluminous where aluminium oxide concentration is lower than the combination, but above wikipedia.org
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Pantellerite
Pantellerite is a type of volcanic rock, specifically a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite. Quartz is found only in the most strongly peralkaline rocks. wikipedia.org
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Mogovidite
Occurrence and association As golyshevite, mogovidite was discovered in calcium-bearing peralkaline pegmatites of the Kovdor massif, Kola Peninsula, Russia wikipedia.org
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Rhyolite
Peralkaline rhyolites (rhyolites unusually rich in alkali metals) include comendite and pantellerite. Peralkaline rhyolites erupt at relatively high temperatures of more than . They comprise bimodal shield volcanoes at hotspots and rifts (e.g. wikipedia.org
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钠钡长石
俄罗斯西伯利亚东萨彦岭 Zhidoy 地块的霞石正长岩中； 加拿大安大略省西北部 Superior Alkaline Province 的碱性岩石和碳酸盐岩的 Prairie Lake 复合体； Pilansberg peralkaline complex，南非； 俄罗斯西北部科拉半岛科拉碱性省的 Sakharjok wikipedia.org
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Arfvedsonite
It is a rather rare mineral occurring in nepheline syenite intrusions and agpaitic (peralkaline) pegmatites and granites as the Golden Horn batholith in wikipedia.org
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Aqualite
Occurrence and association Aqualite was discovered among peralkaline pegmatites of the Inagli massif, Sakha-Yakutia, Russia. wikipedia.org
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Alkaline magma series
They are distinct from the rare peralkaline magmas, which have excess alkali oxides relative to alumina (Na2O + K2O > Al2O3). Peralkaline rhyolites (comendite or pantellerite) may be generated by fractionation of alkali basalt magma. wikipedia.org
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Kudaru
Geography The Kudaru ring complex was discovered to contain mildly alkaline fayalite granite porphyry, peralkaline arfvedsonite granite and metaluminous wikipedia.org
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Lomonosovite
Origin Accessory mineral of peralkaline agpaitic nepheline syenites (like Khibina and Lovozero massif, Russia, Ilimaussaq intrusion, Greenland) important mineral of agpaitic pegmatites and peralkaline fenites. wikipedia.org
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Agpaitic rock
An agpaitic rock is a peralkaline igneous rock, typically nepheline syenite or phonolite. wikipedia.org
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