收稿日期: 2015-12-01
修回日期: 2016-01-04
网络出版日期: 2016-05-30
The New Insights and Prospecting Significance of Overall Structural Features of Hatu Gold Belt
Received date: 2015-12-01
Revised date: 2016-01-04
Online published: 2016-05-30
哈图金矿带是新疆最大的金矿集带,但其总体构造特征、成矿规律和找矿方向尚不明晰。为查明该矿带的总体构造特征,确定今后的找矿方向,从区分成矿期构造和成矿后构造的思路出发,对区内各主要断裂进行了详细的研究和分析。原认为属于所谓“成矿或控矿”断裂的哈图、安齐和达尔布特大断层均应属于成矿后断层,并截切、错移了相对早期形成的哈图金矿带,从而使其复杂化。而真正的“成矿构造”乃系一个走向NEE、倾向NNW,总体上呈上宽下窄的大楔状体。该楔状体被哈图、安齐大断层截断和错移,形成了一个走向NEE、倾向NNW的叠瓦状构造。在此基础上,提出今后的找矿方向:中部以齐Ⅰ矿区为中心,处于楔状体的中心部位,矿体厚度大品位高,找矿和采矿前景最好;南部达尔布特矿带(东部地区)处于楔状体最上部,矿脉呈分散的中小型,但数量较多,应以寻找中小型矿为主;北部哈图矿带处于楔状体的最下部,矿脉少、薄且贫,找矿前景最差。
纪广俭 , 张永霖 , 纪燕祥 , 马国朋 , 帅邦林 . 哈图金矿带总体构造特征新见解及找矿意义[J]. 黄金科学技术, 2016 , 24(2) : 29 -36 . DOI: 10.11872/j.issn.1005-2518.2016.02.029
Located in Western Junggar area,Hatu gold mine is the largest gold mine in Xinjiang Autonomous Region,China.In the past years,a large number of geological data were gathered and stored.In the relevant material,the three large faults,Hatu,Anqi and Daerbute are called minerogenetic structure,ore controlling structure,or conducting structure in almost all the relevant geological data.However,the author affirms that actually there is no gold mineralization,alteration phenomenon and occurrence of gold orebody in those faults.The breccia,crushed rock,schistose and other materials in the fault zone has experienced strong compression.The gold in the fault zone was not mineralized or altered and the existence of the gold ore is merely the result of mineralization of fault tectonic.The previous researchers have made these mistakes,including mis-clipping or displacing the Hatu gold belt,which has made things more complicated.Based on the occurrence and offsetting conditions of those three mineralization faults’ structure,the gold belt’s original state was restored,which proved that the Hatu gold belt’s original state is a large wedge ore body that trends NEE,NNW direction,extending about 70 km SN and more than 100 km EW.In the late period it was truncated and offset by the large faults Hatu,and Anqi belts.These interactions have made Hatu gold belt form the imbricated structure and NEE,NNW direction.According to this general structural pattern,the author can scientifically guide and predict the direction and scheme of mineralization,the prospecting of each gold deposit and ore spots of the Hatu gold belt.To be more specific,the author found out that the center of wedge ore body,with Hatu gold deposit(or a little inclined to east) which belongs to Western Gold Group as its center,has maximum single layer thickness and higher grade,with the best prospecting and mining prospects,lying in the center of the original large wedge-shape ore;the author also found out that the south Daerbute ore belt especially the eastern area which is on the topside of the wedge ore body,has the gold veins in small and medium size and with a larger number,there fore more small and medium-sized mines should be prospected;the author found out that the northern Hatu belt locates on the lowermost portion of the wedge ore body,and the veins are fewer and poor,therefore the prospecting potential and hope is little.
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