针对Utah州Twin Peaks流纹英安岩和流纹岩中的普通辉石、紫苏辉石、透辉石、斜长石、石英、黑云母、钛磁铁矿和钛铁矿,进行了29种痕量元素(包括REE)分配系数的计算,计算结果介于前报导的英安岩和高硅流纹岩之间,在Twin Peaks区较低硅的岩浆中,斑晶和熔体间的分配主要受晶体结构的克配。而在较高硅质体系中,熔体构造和挥发份含量变成主要控制痕量元素分配的条件. For the pyroxene, peridotite, diopside, plagioclase, quartz, biotite, titanomagnetite and ilmenite in the Twin Peaks rhyolite and rhyolite from Utah, 29 The calculation of the distribution coefficients of trace elements (including REE) is calculated between the previously reported dacite and high-silica rhyolite. In the magma of lower silicon in the Twin Peaks region, Distribution is mainly affected by the crystal structure of the match. In the higher siliceous systems, the melt structure and the volatile content become the main conditions controlling the distribution of trace elements.