一、前言磁性是矿物的重要物理性质之一。物质的磁性是原子的外层电子的自旋磁矩和轨道磁矩所引起的。在冶金地质部门,矿物磁性在岩矿鉴定、矿物分选和地质测量、找矿等方面都起着重要的作用。表征矿物磁性的物理量,主要是矿物的质量磁化率即比磁化率——K的值,其物理意义为单位质量的矿物在磁场强度为一奥斯特的磁场中产生的磁矩,它表示矿物受磁化的难易程度。大多数磁性较弱的矿物K值是一个定值,但少数强磁性矿物的K值则随矿粒形状、大小及磁场强度变化而变化。 I. Introduction Magnetism is one of the important physical properties of minerals. The material’s magnetism is caused by the spin magnetic moment and orbital moment of the outer electron of the atom. In the metallurgical geology department, the magnetism of minerals plays an important role in rock and mine identification, mineral separation and geological survey, prospecting and so on. The physical quantity that characterizes the magnetism of a mineral is mainly the mass susceptibility of the mineral, ie, the value of the specific magnetic susceptibility - K, which in its physical meaning is the magnetic moment produced by a unit mass of mineral in a magnetic field with a magnetic field strength of one oersted, The degree of susceptibility to magnetization. Most of the less magnetic minerals K value is a constant value, but a small number of ferromagnetic minerals K value with the mineral shape, size and magnetic field intensity changes.