大兴安岭虎拉林金矿地质地球化学特征及找矿方向

Geological-Geochemical Features of the Hulalin Gold Deposit,Daxing,anling

虎拉林金矿位于额尔古纳成矿带北段,是与斑岩体有关的隐爆角砾岩型金矿,矿化具有一体多型的分布模式,矿体受隐爆角砾岩和断裂联合控制。Bi、As、Au、Sb、Ag、Pb明显富集,并且具有变异系数大、分布不均匀等特点。δ^34 S值（CDT）变化范围在-0.2‰-0.8‰之间,具有深源岩浆S的特征,成矿物质来自地壳深部或地幔,成矿流体以深部岩浆热液为主,成矿年龄为135.5M a,矿床属中低温热液型矿床,矿区外围找矿前景较好。

The Hulalin gold deposit is located in the north of Erguna ore - forming belt, belongs to the cryptoexplosion breccia type gold deposit related to the porphyry body. The mineralization distribution is featured by the model of onebody withmuhi - type. The orebodies are controlled by cryptoexplosion breccia and faults , Bi,As,Au,Sb,Ag,Pb are obviously enriched and have characteristics of big variation coefficient, uneven distribution. δ^34S rangers from - 0.2‰ - 0.8‰ and shows S features of plutonic magmas. The ore - forming materials derive from deep crust or mantle, and the ore - forming fluids derive from the deep magmatic hydrothermal solution. The ore - forming age was 135.5Ma. The genetic type belongs to the meso - epithermal altered hydrothermal. It will is good prospecting exploration direction for the outside orebodies.