山东罗山金矿床主要金属矿物的标型特征

罗山金矿床含金黄铁矿的化学成分、晶胞参数、热电系数等标型特征随黄铁矿粒度和晶形不同而有规律的变化,表明黄铁矿上述标型特征除受黄铁矿形成时物化条件控制外,还与黄铁矿的粒度和晶形有关。不同条件下形成的自然金从早到晚、从高温到低温金成色逐渐降低,自然金成色这种规律性变化对划分成矿阶段,确定矿床形成深度和成因具有重要意义。

THE TYPOMORPHIC PECULIARITIES OF PYRITE AND NATIVE GOLD FROM LUOSHAN GOLD DEPOSIT IN SHANDONG

This paper studies mainly the typomorphic peculiarities of gold-bearing pyrite and native gold in Luoshan gold deposit by using various kinds of measurement methods. The regular changes in the chemical composition, unit cell dimension and coefficient of thermoelectricity of the gold-bearing pyrite with difference between their crystal morphology and grain size show that the typomorphic peculiarities of pyrite are not only controlled by the physical and chemical condition but also related to their crystal morphology and grain size. From the earlier to the later, from the higher temperature to the lower temperature, the fineness of the native gold formed under different environments decreases gradually, the change regularities of the chemical composition of native gold will help to divide mineralization stages and to determine the ore-formation depth and the gene-sis of gold deposits.