Jinshanjiangite and bafertisite from the Gremyakha-Vyrmes Alkaline Complex, Kola Peninsula

被引：0
作者：
I. S. Lykova
I. V. Pekov
N. N. Kononkova
A. K. Shpachenko
机构：
[1] Moscow State University,Faculty of Geology
[2] Russian Academy of Sciences,Institute of Geochemistry and Analytical Chemistry
[3] Russian Academy of Sciences,Geological Institute, Kola Scientific Center
来源：
Geology of Ore Deposits | 2010年 / 52卷
关键词：
Kola Peninsula; Alkali Granite; Lamellar Crystal; Alkaline Complex; Monoclinic Unit Cell;
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摘要：
Jinshanjiangite (acicular crystals up to 2 mm in length) and bafertisite (lamellar crystals up to 3 × 4 mm in size) have been found in alkali granite pegmatite of the Gremyakha-Vyrmes Complex, Kola Peninsula. Albite, microcline, quartz, arfvedsonite, zircon, and apatite are associated minerals. The dimensions of a monoclinic unit cell of jinshanjiangite and bafertisite are: a = 10.72(2), b=13.80(2), c = 20.94(6) Å, β = 97.0(5)° and a = 10.654(6), b = 13.724(6), c = 10.863(8) Å, β = 94.47(8)°, respectively. The typical compositions (electron microprobe data) of jinshanjiangite and bafertisite are: (Na0.57Ca0.44)Σ1.01(Ba0.57K0.44)Σ1.01 (Fe3.53Mn0.30Mg0.04Zn0.01)Σ3.88(Ti1.97Nb0.06Zr0.01)Σ2.04(Si3.97Al0.03O14)O2.00(OH2.25F0.73O0.02)Σ3.00 and (Ba1.98Na0.04K0.03)Σ2.05(Fe3.43Mn0.37Mg0.03)Σ3.83(Ti2.02Nb0.03)Σ2.05 (Si3.92Al0.08O14)(O1.84OH0.16)Σ2.00(OH2.39F1.61)Σ3.00, respectively. The minerals studied are the Fe-richest members of the bafertisite structural family.
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页码：837 / 842
页数：5
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