南格陵兰Ilímaussaq杂岩过碱性花岗岩中的钡铁钛酸盐

IF 1.1 4区地球科学 Q3 GEOLOGY

Acta Geologica Polonica Pub Date : 2023-07-20 DOI:10.24425/agp.2021.137709

Małgorzata Cegiełka, B. Bagiński, R. Macdonald, Beata Marciniak-Maliszewska, M. Stachowicz

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引用次数: 0

摘要

: Cegiełka, M.， Bagiński, B.， Macdonald, R.， Marciniak-Maliszewska, B.和Stachowicz, M. 2022。南格陵兰岛Ilímaussaq杂岩的过碱性花岗岩中的Ba-Fe钛矿。地质学报，72(1)，1−8。南格陵兰岛Ilímaussaq杂岩的过碱性花岗岩含有稀有矿物henrymeye rite [(Ba 0.92 Na 0.05 Ca 0.03) 1.0 (Ti 6.87 Fe 2+1.04 Nb 0.03) 7.9 O 16]、低铁Ba钛酸盐[(Ba 0.74 Ca 0.02 Na 0.05) 0.8 (Ti 4.90 Fe 2+0.15 Nb 0.04) 5.1 O 11]和未识别的Ba钛硅酸盐。两种钛酸盐均表现为2Na + + si4 +→ba2 + + ti4 +的偶联取代。这些矿物以微小晶体的形式存在于闪洞晶体中钛铁矿包裹体的边缘，被认为是在花岗岩演化的热液阶段形成的。

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Ba-Fe titanates in peralkaline granite of the Ilímaussaq Complex, South Greenland

: Cegiełka, M., Bagiński, B., Macdonald, R., Marciniak-Maliszewska, B. and Stachowicz, M. 2022. Ba-Fe tita - nates in peralkaline granite of the Ilímaussaq Complex, South Greenland. Acta Geologica Polonica , 72 (1), 1−8. A peralkaline granite of the Ilímaussaq Complex, South Greenland, contains the rare mineral henrymeye rite [(Ba 0.92 Na 0.05 Ca 0.03 ) 1.0 (Ti 6.87 Fe 2+1.04 Nb 0.03 ) 7.9 O 16 ], a low-Fe Ba titanate [(Ba 0.74 Ca 0.02 Na 0.05 ) 0.8 (Ti 4.9o Fe 2+0.15 Nb 0.04 ) 5.1 O 11 ], and an unidentified Ba titanosilicate. Both titanates show the coupled substitution 2Na + + Si 4+ → Ba 2+ + Ti 4+ . The minerals are present as tiny crystals fringing ilmenite inclusions in an amphibole crystal and are thought to have formed during the hydrothermal stage of the granite’s evolution.

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来源期刊

Acta Geologica Polonica 地学-地质学

CiteScore

1.70

自引率

18.20%

发文量

审稿时长

>12 weeks

期刊介绍： Acta Geologica Polonica publishes original and review papers on all aspects of basic geology, with particular focus on sedimentology, stratigraphy, palaeontology, regional geology, structural geology, and regional petrography. All papers are published in English.