磷钙钍矿CaTh(PO_4)_2发现于我国新疆—稀有金属花岗伟晶岩中,主要与铪锆石、锂辉石、铌钽锰矿、钠长石等矿物共生。它是独居石类的一种新矿物,在化学成份上富ca、Th,而只含极少量的TR,在结构上和人工合成的钙钍磷酸盐CaTh(PO_4)_2,基本一致。1953年,S.Bowie等报道过印度花岗伟晶岩所产的富钍独居石,但其中仍含有27.56％的TR_2O_3,仅为独居石—磷 Phosphate calcium thorium mine CaTh (PO_4) _2 found in China Xinjiang - rare metal granitic pegmatite, and hafnium zircon, spodumene, niobium tantalum manganese ore, albite and other minerals symbiotic. It is a new mineral of monazite, which is chemically rich in Ca, Th and contains only a very small amount of TR, and is structurally identical to artificially synthesized calcium-thorium phosphate CaTh (PO 4) 2. In 1953, S.Bowie et al. Reported the rich thorium monazite produced from the Indian granitic pegmatite, but still contains 27.56% TR 2 O 3, which is only monazite-phosphorus