赛马矿(saimaite)为一含U、Th、Sr及稀土的锆钛硅酸盐新矿物,最初由中国科学院地质研究所发现,本文系为新近研究的部分成果。一、矿物一般特征该矿物产于中朝地块大地构造单元内某碱性岩型铀钍及稀土元素矿床中。手标本中矿物颗粒极少,色深黑,易误认为氧化铁类。镜下具透明、高折光率、贝壳状断口并呈现强油脂光泽 The saimaite is a new zirconium-titanium silicate mineral containing U, Th, Sr and rare earths. Originally discovered by the Institute of Geology, Chinese Academy of Sciences, this article is part of a recent study. First, the general characteristics of minerals The mineral was produced in the geotectonic unit of the North Korea block alkaline rock type uranium thorium and rare earth elements in the deposit. Hand specimens of very few mineral particles, dark color, easily mistaken for iron oxides. Mirror with a transparent, high refractive index, shellfish-shaped fracture and showing a strong grease shine