白云鄂博矿物岩石研究的新进展

本文论述了近年来白云鄂博矿区在旷物学、岩石学、地球化学和矿床成因研究方面的进展。在矿物学研究方面,除以往研究过的一百多种矿物外,八十年代中期以后,又相继发现并研究了含铌锐钛矿、含铌钙钛矿、锶铁钛石、水磷钙钍石、白云鄂博矿、未命名氟碳酸盐新种矿物、珀硅钛铈铁矿、硅钡镁石、带云母等矿物;发现了矿物间的共生和交代关系。在岩石学研究方面,找到了霓长岩,发现了霓长岩化作用,确定了火成碳酸岩岩石的存在。在地球化学和矿床成因方面,提出了稀土稀有金属矿化与火成碳酸岩岩浆活动有成因联系的见解。

New Advances in the Mineralogical and Petrological Study of the Bayan Obo Ore Deposit

This paper deals with the new advances made in recent years in the study of mineralogy, petrology, geochemistry and metallogenesis of the Bayan Obo ore deposit. In mineralogy, besides the previously-studied more than one hundred minerals, a lot of other minerals have been found and studied in succession, which include niobanatase, niobian perovskite, crichtonite, brockite, beiyunoboite,unnamed new species of fluorocarbonate, perrierite, magbasite and taeniolite. New relations of minerals, mineral paragenesis and replacement have also been found. In petrology, fenite and fenitization have been identified,and the existence of igneous carbonatite has been confirmed. In geochemistry and ore deposit genesis, the idea is put forward that REE and RE mineralizations are genetically related to carbonatite magaa atic activity. This idea, however, remains to be verified through further thorough investigation and various means of exploration. The results of our recent work have deepened the study of mineralogy, petrology, geochemistry and metallogeny of the Bayan Obo deposit.