摘要
袁复礼石是一种新的硼酸盐矿物,晶体化学式为 MgFe^(3+)[BO_3]O。在晶体结构的基础上,对该矿物进行了因子群和位置群分析。根据因子群的分析获得了各种振动模式的选择定则、对称种类和数目,袁复礼石的振动光谱可表示为:Γ=14A_g^R+14B_(1g)~R+7B_(2g)~R+7B_(3g)~R+7A_u+7B_(1u)^(IR)+14B_(2u)^(IR)+14B_(3u)^(IR)。内模式的位置群的分析揭示了光谱和 BO_3^(3-)对称之间的关系以及它们在正则频率中的分布。袁复礼石红外光谱的多重性是位置群和因子群分裂的结果。
Yuanfuliite is new borate mineral,it's formula is MgFe^(3+)[BO_3]O.Based on structure data,the factor-group and site-group analysis have been made.From these analyses the selection rule,symmetry and number of various modes are obtained. Vibration representation of yuanfuliite is given by factor-group analysis,it is:Γ= 14A_g^R+14B_(1g)~R+7B_(2g)~R+7B_(3g)~R+7A_u+7B_(1u)^(IR)+14B_(3u)^(IR).The site-group analysis of internal modes shows the correlation between the spectra and the symmetry of BO_3^(3-)ions,and their distribution in normal frequency.The infrared spectrum of yuanfuliite is interpreted well.
出处
《化工矿产地质》
CAS
1996年第1期1-4,共4页
Geology of Chemical Minerals
