新疆阿希地区大哈拉军山组火山岩金元素地球化学特征及其成矿关系  

GOLD GEOCHEMISTRY AND MINERALIZATION OF THE VOLCANICS OF DAKARAJONSHAN FORMATIONIN AXI

作　　者：漆树基 李长河 

机构地区：[1]新疆维吾尔自治区地质矿产局第一区调大队

出　　处：《新疆地质》1994年第2期139-145,共7页Xinjiang Geology

摘　　要：阿希地区下石炭统大哈拉军山组４个岩性段均由中酸性火山岩组成。各岩性段火山岩的金元素岩石－地球化学特征有着显著差异，与金矿成矿关系不尽相同。其中的酸性凝灰岩段金元素平均值１１０．６×１０－９，最高值１８０００×１０－９，浓集克拉克值２８，标准离差２２８，变异系数２．０６。该岩性段是阿希地区各种类型金矿的重要矿源层。The four lithologic sections of Dakarajonshan Fm. of lower Carboniferous are all composed of intermediate-acidic volcanics. The litho-geochemistry of gold of each section shows obvious difference,and shares no similarity in the relation with gold mineralization. The acidic tuff section owns gold element with average content of 110. 6× 10-9,the highest of 18 000 ×10-9,concentrated Clarke value of 28,standard dispersion of 228,varistion coefficient of 2. 06,regarded as the main ore source bed of all kinds of gold deposits in the Axi area.

关 键 词：阿希 下石炭统 大哈拉军山组 金元素 岩石-地球化学特征 酸性凝灰岩段 矿源层 

分 类 号：P588.1[天文地球—岩石学]