安徽亳县陨石不透明矿物研究

毫县陨石的不透明矿物有陨硫铁、铁纹石、镍纹石、镍黄铁矿、镁铁尖晶石、自然铜、石墨、方铁矿、铬铁矿、钛铁矿、磁铁矿、张衡矿及x矿物等。本文对它们进行了反光显微镜鉴定、X射线分析、反射率测定和电子探针分析。总结了不同化学群的球粒陨石中FeO和MgO的含量变化规律。

STUDIES OF OPAQUE MINERALS IN THE BOXIAN METEORITE FROM BOXIAN COUNTY,ANHUI PROVINCE

A number of opaque minerals were identified in the Boxian meteorite,inc-luding troilite, kamacite, taenite, pentlandite, magnoferrite, native copper, graph-ite, wustite, chromite, ilmenite, magnetite, zhanghengite (a new mineral), etc.These minerals were studied using reflecting microscope, X-ray analysis, electronmicroprobe, etc. The occurrence, morphology and composition of some mineralswere commented. The variation of FeO and MgO contents in ilmenite from ch-ondrites of different chemical groups is suggested to be one of the parametersfor classifying the chemical groups of ordinary chondrites. However, this par-ameter should be coupled with other parameters when used to classify the che-mical groups of ordinary meteorites. The morphologic features of metallic min-erals formed under different physicochemical conditions are different. In addition,the forming stages of opaque minerals in the Boxian meteorite are also discus-sed in this paper.