中国南岭风化壳型稀土资源分布特征

DISTRIBUTION CHARACTERISTICS OF THE WEATHERINGCRUST-TYPE RARE-EARTH RESOURCES IN NANLING, CHINA

本文从南岭风化壳型稀土资源的元素、储量、时代、构造和地理等5个方面的分布特征研究入手,分析结果得出中国南岭风化壳型稀土资源以花岗岩风化壳型稀土资源为主,表现出元素丰度高、储量大、时代新、构造条件简单和地理分布面积广的特点,其次是火山岩和碱性花岗岩,碱性岩与千枚岩的风化壳也都有稀土矿产出,从而打破了南岭风化壳型稀土矿都是由花岗岩风化后形成的传统概念,扩大了稀土资源的找矿方向与远景储量。

Based on the research on the distribution characteristics of the weathering-c rust-type rare-earth resources in Nanling in term of their elements, reserves, age, structure and geography, the author comes to the conclusion that the granite weathering-crust-type rare-earth resources predominate the weathering-crust-type rare-earth resources in the region and their Characteristics are high in element abundance, big in reserves, new in age, simple in tectonic conditions and wide in geographical distribution. Besides, there is. also occurrence of rare-earth minerals in the weathering crusts of volcanic rock and phyllite, thus negating the traditional concept that all the weathering-crust-type rare-earth minerals in Nanling are formed after the weathering of granites and broadening the ore-finding scope and the prospective reserves of rare-earth resources.