摘要
阿希金矿床赋存在火山—次火山岩中，受火山机构控制。主要矿石建造可分为四种构造共生类型：①石英脉及网脉；②石英脉角砾胶结型；③石英脉角砾—蚀变安山玢岩角砾—安山质熔岩角砾胶结型；④蚀变岩型．主要金属矿物为自然金、银金矿，其次有黄铁矿、白铁矿、毒砂、硒银矿、硫锑银矿、硒铅矿等。主要非金属矿物为石英、玉髓、其次是方解石、铁白云石、伊利水云母及其它粘土矿物。矿石主要化学成份是ＳｉＯ２，其次为ＣａＯ，Ａｌ２Ｏ３，Ｋ２Ｏ，微量Ｃｒ，Ｎｉ，ＣＯ，Ｓ，Ａｓ，Ｓｂ，Ｓｅ，Ｓｕ，Ｐｂ，Ｚｎ等元素。矿石典型元素组合为Ａｕ，Ａｇ，Ａｓ，Ｓｂ，Ｓｅ。矿石建造成因是火山—次火山深部热液自断裂带多次上升活动与充填交代的结果，最后生成矿化角砾岩型矿床，成因上属于火山—次火山低温热液矿床。
The Axi gold deposits are located in volcanic-subvolcanic roks and controlled by volcanic mechanism. The formation of primary ore fall roughly into four tectonic-paragenetic mineral type: ① guartz vein and reticulated vein, ② brecciated quartz ore, ③ brecciated quartz-altered andesit-altered andesite love cementing ore, and ④ altered rock. The major metallic minerals of ore are gold, electrum and the others: pyrit, marcasite, arsenopyrit, naumannite, pyrargyrite,clansthalite.The major nonmetallic minerals are quartz,chansthealite,and miner ores are calcite,ankerite. illite hydromica and other clay minerals.The major chemical composition of ore are SiO2. the secondly are CaO, Al2O3, K2O,microelement are Cr, Ni, Co,S, As .Sb, Se and Cu,Pb, Zn. The typical element association of mineral deposits are An, Ag,As,Sb,Se.The genesis of ore formation belong to volcanic-subvolcanic thermal fluid the deep hydrothermal fluid uplift form polyreactived circulsr faults and form mineraliszed breccia pipa deposits. In the genesis are volcanic-subvolcanic hydrothermal deposits.
出处
《矿物岩石》
CAS
CSCD
1996年第1期68-73,共6页
Mineralogy and Petrology
