中文摘要：

对锆石晶体四方柱{100}面和{110}面、四方双锥{101}面、以及介于上述晶面之间的切面进行了腐蚀像的观察研究,建立了锆石晶体腐蚀像在三维空间分布的立体模型。锆石晶体上属于同种单形的晶面（切面）其腐蚀坑形态相同,不同单形的晶面（切面）腐蚀坑形态则不同;腐蚀坑形态体现了晶体的对称性。锆石晶体各晶面（切面）的腐蚀坑形态在三维空间分布的立体模型和投影图可用来进行锆石晶体的定向,揭示锆石不同晶面的溶蚀现象,并可为锆石的裂变径迹测年研究提供晶体定向理论依据。

英文摘要：

The etching figures on tetragonal prism {100} face and {110} face,tetragonal bipyramid {101} face and sections between any of the two crystal faces have been studied by using differential interference contrast microscopy（DIC）,the three-dimensional model of etching figure of zircon was established.It is shown that the etching pit on the same simple form has the same shape,different simple forms have different shapes of etching pits.The morphology of etch pits reflect the symmetry of zircon crystal.The three-dimensional model of etching figure of zircon and the projection of the there-dimensional distribution of etch pits on zircon can be used for the orientation analysis of zircon crystal and revealing the dissolution of different crystal faces of zircon.