内蒙古阿拉善左旗萨格勒日—浩恩丹地区地质-地球化学特征及找矿方向  

Geological-geochemical characteristics and prospecting index in Sageleri-Haoendan area,Alxa Zuoqi,Inner Mongolia

作　　者：葛治勋 

机构地区：[1]中国冶金地质总局三局山西冶金岩土工程勘察总公司,太原030002

出　　处：《地质找矿论丛》2016年第3期440-448,共9页Contributions to Geology and Mineral Resources Research

摘　　要：在大型岩株（岩基）中找矿，采用常规地质方法和物探磁、电方法往往效果不很理想，而辅以化探方法多能收到较好的找矿效果。在内蒙古阿拉善左旗巴彦诺日公苏木萨格勒日一浩恩丹地区的1：5万土壤及水系沉积物测量中发现有较好的W，Mo异常；在此基础上选区进行1：1万土壤地球化学测量，在萨格勒日等地发现了16处综合异常区。对萨格勒日异常进行检查，地表拣块样w元素2个高值w（W）=0．022％和0．0103％，w（Ag）=8．78×10；对浩恩丹一带异常进行槽探工程揭露，查明2条辉钼矿脉，钼品位w（Mo）=0．034％～0．14％，地表矿脉延伸600～800m。研究认为，钼矿化受构造和岩浆岩的控制，提出了2个找矿远景区，预测在巴彦诺日公花岗岩体中寻找钼矿、钨矿的工作有望取得成效。Only geophysical survey （magnetic or electric method） for ore prospecting in large stocks and hatholithes is often not ideal but geological survey together with geochemical survey are ideal. Soil and river sediment survey at scale 1 ： 50000 in Sageleri-Haoendan area show evident W, Mo anomlies and 16 integrated anomlies are located by further soil survey at scale 1 ： 10000 at Sageleri. Samples are picked from Sageleri anomly of which two are high in element W （0. 022%,0. 010 3%） and Ag （8.78× 10-6）. Trenching at Haoendan reveals two molybdenite veins with grade of w（Mo） =0. 034%-0.14% and surfa- cial extension of 600-800 m. The molybdenite mineralization is controlled by both structure and magmat- ic rock. Accordingly the Sageleri and the Haoendan are located as the two potential prospects and prospec- ting breakthrough of Mo and W in Bayan Nuru granite body is predicted.

关 键 词：萨格勒日-浩恩丹地区 地质-地球化学综合找矿 化探异常 构造-岩浆岩控矿 阿拉善左旗 内蒙古自治区 

分 类 号：P632[天文地球—地质矿产勘探] P596[天文地球—地质学]