The crystal structure of tilleyite
The crystal structure of tilleyite
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DOI：
10.1107/s0365110x53000028
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发表时间：
1953
期刊：
影响因子：
--
通讯作者：
J. Smith
中科院分区：
文献类型：
--
作者：
J. Smith
The crystal structure of tilleyite has been determined. The crystals are monoclinic, space group P21/a, with four units of CasSi2OT(COa) 2 in a cell of dimensions a = 15.025 ±0.007, b---10.269 4-0-005, c= 7-628 ±0.007 A, fl---105 ° 50' 4-10'. The approximate atomic coordinates were found from bounded Patterson projections and systematic comparison of structure amplitudes. These coordinates were refined by two-dimensional Fo and (Fo--Fc) syntheses. The shapes of the Si207 and CO3 groups have been determined. The cleavages, twinning and optical properties have been explained in terms of the crystal structure.
