云南白秧坪矿化集中区矿石矿物特征及银、钴赋存状态的初步研究  

PRELIMINARY STUDY ON THE CHARACTERISTICS OF ORE MINERRALS AND THE OCCURRENCE STATES OF SILVER AND COBALT IN THE BAIYANGPING ORE-CONCENTRATED FIELD ,YUNNAN PROVINCE

作　　者：陈开旭[1] 何龙清[2] 魏君奇[2] 杨爱平 杨伟光 黄惠兰[2] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]宜昌地质矿产研究所,湖北宜昌443003 [3]云南地勘局第三地质大队,云南大理671000

出　　处：《矿物学报》2004年第1期61-67,共7页Acta Mineralogica Sinica

基　　金：地质矿产部定向基金项目(地科定98 12);中国地质调查局大地调项目(编号K3 1 7)

摘　　要：云南白秧坪地区是以银、钴多金属矿化为特色的矿集区,成矿作用与兰坪盆地两侧的推覆构造系统密切相关,发育一套复杂的中低温热液矿物组合,出现了铜、钴、镍、铋等亲地幔元素的硫化物(硫钴镍矿、硫铋铜矿),显示地幔深源物质可能参与了成矿作用。银、钴赋存状态的初步研究表明载银矿物主要为汞银矿、辉银矿、银黝铜矿、方铅矿、黝铜矿及砷、锑、铅硫盐矿物等,载钴矿物主要为硫钴镍矿、辉砷钴矿、含钴毒砂等硫化物。The Baiyangping ore-concentrated field is located in the northern segment of the Lanping-Simao Basin, silver- and cobalt-multimetallogenic mineralization is intimately related to the nappe tectonic system on both sides of the Lanpng Basin. The ores are made up of some complex medium-low temperature hydrothermal minerals, and contain a lot of elements related to the mantle, for example, copper, cobalt, nickel and bismuth. The occurrence of some sulfides (siegenit and wittichenit) shows mineralization is probably related to mantle-derived material. The occurrence states of silver and cobalt revealed by means of microscope and scanning electron microprobe indicate that silver occurs mainly or is scattered in schachnerite, argentite, freibergite, galena, tetrahadrite, and arsenic-, antimony-, lead-sulfosalts, and cobalt is present as cobaltite, siegenit and danait.

关 键 词：多金属矿 硫钴镍矿 中低温热液矿物 铅锑砷铜硫盐矿物 成矿作用 地质构造 云南 

分 类 号：P618.5[天文地球—矿床学] P579[天文地球—地质学]