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解决镍矿成矿母岩形成的时代,对研究镍矿的成矿规律及成矿预测均有重大意义。然而以往对镍矿成矿时代的研究,仅限于对基性、超基性岩中的暗色矿物进行K—Ar年龄的测定。虽然已有大量的年龄数据,但都不准确可靠。因为基性、超基性岩中的绝大部份暗色矿物,容易变质和蚀变。所以选择暗色矿物作为K—Ar年龄测定对象,势必导致测定结果往往偏低,它即不能代表母岩形成的时代,又不完全代表变质和蚀变的时代。这给研究镍矿成
It is of great significance to study the metallogenic regularity and metallogenic prognosis of nickel ore to solve the age of nickel ore metallogenic rock formation. However, the previous studies on the ore-forming age of nickel ore are limited to the determination of the K-Ar age of dark-colored minerals in basic and ultrabasic rocks. Although a large number of age data, but are not accurate and reliable. Because of the basic, most of the dark-colored minerals in ultrabasic rocks are easily metamorphosed and altered. Therefore, the choice of dark-colored minerals as K-Ar determination of age will inevitably lead to the measurement results tend to be low, it can not represent the formation of rock age, but also does not completely represent the era of metamorphism and alteration. This gives research into nickel ore