海南岛东南部近岸表层沉积物锆、钛地球化学特征对浅海砂矿的指示  

Geochemical characteristics of Zr and Ti in surface sediments indicate the shallow sea placers at southeast off-shore of Hainan island

作　　者：付标 薛玉龙[1,2] 曾维特 王雪木[1,2] FU Biao;XUE Yulong;ZENG Weite;WANG Xuemu(Hainan Key Laboratory of Marine Geological Resources and Environment,Haikou 570206,China;Marine Geological Survey Institute of Hainan Province,Haikou 570206,China)

机构地区：[1]海南省海洋地质资源与环境重点实验室,海南海口570206 [2]海南省海洋地质调查研究院,海南海口570206

出　　处：《中国矿业》2021年第S01期208-216,共9页China Mining Magazine

基　　金：2019年海南省基础与应用基础研究计划(自然科学领域)高层次人才项目资助(编号:2019RC350);海南省科协青年科技英才创新计划项目资助(编号:QCXM202008);海南省海洋地质资源与环境重点实验室自主课题资助(编号:ZZ[2020]2019256-01)。

摘　　要：通过对海南岛东南部近岸海域245个表层沉积物样品的锆、钛地球化学测试数据进行处理和分析,对研究区内锆钛砂矿资源的分布规律进行了讨论。研究结果表明海南东南部近岸海域表层沉积物中锆钛砂矿主要以锆英石、金红石、钛铁矿为主,并伴有白钛矿的富集。研究区内大部分区域表层沉积物地球化学折算锆英石和金红石含量均能达到边界品位,折算矿物含量达到工业品位的区域则与ZrO_2和TiO_2含量的高值区范围一致,主要集中在海南东南部保定海、坡头港和土福湾一带近岸浅水海域。Through the analysis of 245 surface sediment samples’geochemistry data about Zr and Ti,which are sampled from the southeast off-shore of Hainan island.The results show that the minerals of the Zr-Ti placers are zirconite,rutile and ilmenite,accompanied by enrichment of titanomorphite at southeast off-shore of Hainan island.The geochemical conversion of zirconite and rutile content of the surface sediments in most areas of the study area can reach the boundary grade,and the area where the converted mineral content reaches the industrial grade is consistent with the high value area of ZrO2 and TiO2 content,mainly concentrated in the southeast of Hainan island,such as Baoding Sea,Potou Port and Tufu bay.

关 键 词：海南岛东南部 地球化学特征 锆钛砂矿 富集规律 

分 类 号：P744.3[天文地球—海洋科学]