Crystal Chemistry of Pyroaurite from the Kovdor Pluton, Kola Peninsula, Russia, and the Langban Fe-Mn deposit, Varmland, Sweden

被引：9
|
作者：
Zhitova, E. S. [1 ,3 ]
Ivanyuk, G. Yu. [2 ]
Krivovichev, S. V. [1 ,2 ]
Yakovenchuk, V. N. [2 ]
Pakhomovsky, Ya. A. [2 ]
Mikhailova, Yu. A. [2 ]
机构：
[1] St Petersburg State Univ, Inst Earth Sci, Univ Skaya Nab 7-9, St Petersburg 199034, Russia
[2] Russian Acad Sci, Kola Sci Ctr, Ul Fersmana 14, Apatity 184209, Murmansk Oblast, Russia
[3] Russian Acad Sci, Inst Volcanol & Seismol, Far East Branch, Bul Piipa 9, Petropavlovsk Kamchatski 683006, Russia
来源：
GEOLOGY OF ORE DEPOSITS | 2017年 / 59卷 / 07期
基金：
俄罗斯基础研究基金会;
关键词：
pyroaurite; Kovdor; Langban; LAYERED DOUBLE HYDROXIDES; HYDROTALCITE-LIKE COMPOUNDS; ANION-EXCHANGE REACTIONS; CO2; CAPTURE; POLYTYPE; CUALSTIBITE; SJOGRENITE; SHIGAITE; LDHS; MG;
D O I：
10.1134/S1075701517070121
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Pyroaurite [Mg6Fe2 (3+) (OH)(16)][(CO3)(H2O)] from the Kovdor Pluton on the Kola Peninsula, Russia, and the Langban deposit in Filipstad, Varmland, Sweden were studied with single crystal and powder X-ray diffraction, an electron microprobe, and Raman spectroscopy. Both samples are rhombohedral, space group R3I...m, a = 3.126(3), c = 23.52(2) (Kovdor), and a = 3.1007(9), c = 23.34(1) (Langban). The powder XRD revealed only the 3R polytype. The ratio of di- and trivalent cations M (2+): M (3+) was determined as similar to 3.1-3.2 (Kovdor) and similar to 3.0 (Langban). The Raman spectroscopy of the Kovdor sample verified hydroxyl groups and/or water molecules in the mineral (absorption bands in the region of 3600-3500 cm(-1)) and carbonate groups (absorption bands in the region of 1346-1058 cm(-1)). Based on the data obtained, the studied samples should be identified as pyroaurite-3R (hydrotalcite group).
引用
收藏
页码：652 / 661
页数：10
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