摘要
对邯邢地区典型夕卡岩型铁矿床白涧铁矿和西石门铁矿中不同产状的磁铁矿的成分、热电性、爆裂温度及O同位素进行了详细的成因矿物学研究。研究发现:层间矿体具有低Ti、∑REE、爆裂温度、δ18 O的特征,热电性系数较小但变化范围大;接触带矿体为高Ti、∑REE、爆裂温度、δ18 O的特征,热电性系数较大,变化范围小。白涧铁矿层间矿和西石门铁矿中磁铁矿的REE表现出Eu的正异常,而白涧铁矿接触带矿为负异常。白涧铁矿磁铁矿中单层矿体热电性系数具有中部小、顶底大的特征。综合磁铁矿的成因矿物学研究,以热电性的空间变化规律为基础,建立了该区夕卡岩型铁矿的成因和找矿模型。
By the genetic mineralogical study of compositions, thermoelectric properties, decrepitation tempera- ture, and O isotopes of magnetite in Baijian and Xishimen skarn iron deposit, it is found that the magnetite in the ore between carbonate layers shows low Ti, ~REE, decrepitation temperature, 8TM O, and thermoelectric coefficients ; that the magnetite in the ore of contacting belt shows an inverse characteristics. In the same time, REE in the ore between carbonate layers of Baijian and Xishimen iron deposit shows a positive abnormality, but that in the ore of contacting belt of BaijJan shows a negative abnormality. The thermoelectric coefficient of the magnetite in the middle of a single ore body o{ Baijian iron deposit is smaller than that in the top or bottom. Based on the study above, especially, on the thermoelectric properties, the genetic and exploration model of skarn iron deposits in this region was built.
出处
《地学前缘》
EI
CAS
CSCD
北大核心
2013年第3期76-87,共12页
Earth Science Frontiers
基金
国家自然科学基金重大研究计划重点支持项目(90914002)
国土资源部公益性行业科研专项经费项目(200811011)
关键词
邯邢地区
夕卡岩型铁矿
磁铁矿
成因矿物学
Handan-Xingtai area
skarn iron deposits
magnetite
genetic mineralogy
