河南栾川县松树台钼钨矿床及其控矿岩体地质地球化学特征  

The geological and geochemical characteristics of Molybdenum Deposit and its ore-controlling rocks in Songshutai Luanchuan County Henan Province

作　　者：刘勤安[1] 陈涛[2,3] 庞绪成[2] 周亚丽 周亚涛 

机构地区：[1]河南省地质矿产勘查开发局第五地质勘查院,郑州450001 [2]河南理工大学资源环境学院,河南焦作454003 [3]河南省永城市安全生产监督管理局 [4]河南省有色金属地质矿产局,郑州450016

出　　处：《长春工程学院学报（自然科学版）》2014年第4期89-95,共7页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：国土资源部整装勘查项目(2011年第10号)

摘　　要：松树台隐伏钼钨矿位于著名的南泥湖钼矿田黄背岭钼成矿带内，区内小型酸性侵入体广泛分布，断裂构造发育，成矿背景好。矿体产于三川组大理岩与花岗斑岩的接触带，矿石类型包括大理岩型钼矿石、矽卡岩型钼矿石和花岗斑岩型钼矿石。钼、钨资源储量达到中型规模，矿石品位较高，钼平均品位0．12％，伴生钨平均品位0．08％。黄背岭似斑状花岗岩与成矿关系最密切，该岩体为高硅—富钾的钙碱性岩石，SiO2平均含量73．83％，Na2 O＋K2 O平均含量8．97％，σ＝2．01～3．28＜3．3；轻稀土元素相对富集，Ce、Eu负异常明显，δEu平均0．40，δCe为0．56～0．78；Sr、Ba亏损较大，大离子亲石元素相对富集。这些特征与南泥湖及上房岩体相似。综合认为松树台钼钨矿床与南泥湖及上房钼矿类型一样为斑岩—矽卡岩型钼矿床。矿体深部未封底，有较大的找矿增储潜力。The Songshutai hidden Molybdenum‐Tungsten deposit lies in Huangbeiling metallogenic belt of the famous Nannihu molybdenum ore field .The area shows a good prospecting potential according to the widely distribution of Minor intrusions and well‐developed faults .Orebodies occur in the contact zone of marble and granite porphyry of Sanchuan formation ,with molybdenum ore types of marble ,skarn and gran‐ite porphyry .The deposit resource of MO and W can reach medium‐scale with a high grade .The respective‐ly average grades of Mo and associated W are of 0 .12% and 0 .08% .Huangbeiling Porphyritic granite relat‐ed closely to the mineralization ,is a kind of caic‐alkaline rock with high grade of silicon and K .The rock show s some features as follow s ：the average contents of SiO2 ,Na2 O ＋ K2 O are respectively of 73 .83% and 8 .97% ,σ=2 .01‐3 .28＆lt;3 .3 ;And LREE shows relative enrichment .The elements of Ce and Eu show nega‐tive anomaly with the respectively average value of δEu andδCe of 0 .40 and 0 .56‐0 .78 .The rock is much poorer in Sr and Ba but richer in the large ion lithophile elements .T hese features are similar to those of Nannihu and Shangfang granite .It can conclude that Songshutai molybdenum deposit can be classified as porphyry‐skarn type ,being the same type with Nannihu and Shangfang molybdenum deposit .The ore bodies may extend to the endless depth and with greater prospecting potential .

关 键 词：松树台 钼矿床 地质地球化学特征 南泥湖 栾川 河南 

分 类 号：P618.41[天文地球—矿床学]