岩矿石稀土特征线性关系的新发现及其应用

NEW DISCOVERY IN CHARACTERISTIC LINEAR RELATIONSHIP OF RARE EARTH IN ROCK AND ORE AND ITS APPLICATION

对多个地区的岩矿石中稀土成分利用交汇图进行研究,确定在地球的不同地点,不同的岩矿石中,有个普遍存在的总稀土量与轻稀土总量的线性关系式ΣREE=-7.92702+1.25569ΣLREE存在,利用这一关系,可以在只测定了岩矿石轻稀土的情况下,预测出岩矿石稀土的总含量。实际预测了几个矿物和岩石样品,其中对矿物的预测准确度平均值为84.78%,对岩石的预测准确度平均值为88.70%,预测准确度较高。但该线性关系只能用到经过了地质作用而产生出的岩矿石中,不能用在尚未经历地质作用的代表地球早期特征的各类陨石中。

Study of rare earth elements in ores and rocks in many localities using crossplotting indicated that there exists a universal linear relation between total amount of rare earth and light rare earth,ΣREE=7.92702+1.25569ΣLREE,for different rocks and ores in different places of the earth.Based on this formula,only measurement of light rare earth in a rock or ore can tell the total content of rare earth in it.A test was made on a few rocks and ores giving average accuracy of 84.78%for ores and 88.70%for rocks.However,the linear relationship is only applicable to rocks and ores that have been subjected to geological processes,and not to chondrites that have not yet experienced geological processes and that represent early features of the earth.