磁黄铁矿是老柞山金矿的主要载金矿物 ,矿区大量产出的为早成矿期的六方磁黄铁矿 ,生成于弱还原、弱酸性的环境中 ,形成温度约 35 0℃± ,其Fe空位较大 ,晶胞参数与标准值相比较 ,a0 较大 ,c0 则较小 ,热电系数值较小 ,且数值稳定 ;晚成矿期产出的磁黄铁矿较少 ,为六方磁黄铁矿与单斜磁黄铁矿的混合物 ,形成温度小于 30 0℃ Pyrrhotite is the main gold-bearing mineral of Laozuoshan gold deposit. The large amount of output of the pyrite is the hexagonal pyrrhotite in the early ore-forming stage, which is formed in the environment of weak reduction and weak acidity, forming a temperature of about 350 ℃ ±, the Fe vacancies are larger, the unit cell parameters are compared with the standard values, a0 is larger, c0 is smaller, the value of pyroelectric coefficient is smaller and the value is stable; the late pyrite produces less pyrrhotite, For the hexagonal pyrrhotite and monoclinic pyrrhotite mixture, the formation temperature is less than 30 0 ℃