摘要
白云鄂博铁稀土矿床的形成年龄一直是个有争论的问题，采自该矿床东采场的辉钼矿样，通过镜下对矿物结构构造的研究，认为辉钼矿是矿区晚期矿脉形成阶段的矿物，它的铼－锇同位素年龄为（４３９±８）×１０＾６ａ。此结果从另一侧面说明该矿床在加里东期有一期成矿作用。
The Bayan Obo deposit is one of the famous REE ore deposits in the world,and its forma- tion age has long been a topic of controversy.Iron and REE orebodies occur in the dolomite bed of 8th lithologic member of Bayao Obo Group.The molybdenite sample from the eastern orebody is regarded as a product associated with late mineralization,and its Re-Os isotopic age is(439± 8)×10~6 a.This result proves from another aspect that there existed an ore-forming process in Caledonian period.
出处
《矿床地质》
CAS
CSCD
北大核心
1996年第2期188-191,共4页
Mineral Deposits
关键词
辉钼矿
铼
锇
稀土矿床
同位素年龄
Re-Os method
molybdenite
(187)~Re/(187)~Os
Bayan Obo
