本文研究的10个原生造矿铬铁矿样品分别选自藏北超基性岩带的东、丁、依、哀区的矿石中。测谱是在室温下以等加速谱仪进行的。 全部样品的实验谱均为两个不对称的宽峰,低速宽峰的底部往往分裂为二,高速宽峰为较光滑的曲线。经拟合,有三种类型:(1)六个样品属两对四极双峰谱,分别为Fe_A~(2+)(I.S.=1.4～1.6mm/s,Q.S.为0.3mm/s左 The 10 primary ore-forming chromite samples studied in this paper are respectively selected from the ore of East, Ding, Yi and Sadong in the ultrabasic belt in northern Tibet. The spectrometry is carried out at room temperature with an isochronous spectrometer. The experimental spectra of all samples are two asymmetric broad peaks, the bottom of low-speed broad-spectrum peaks often split into two, and the high-speed broad peaks are smoother curves. After fitting, there are three types: (1) The six samples belong to two pairs of quadrupole bimodal spectrum, respectively Fe_A ~ (2 +) (I.S. = 1.4 ~ 1.6mm / s, Q.S.