甘肃省肃北县红柳峡晶质石墨矿矿体特征、矿床成因及找矿远景浅析

Gansu Province Subei County Gongliu Orebody Characteristics, Ore Graphite Crystal Gorge and Prospecting, Ore Genesis of Ore Prospecting

红柳峡晶质石墨矿区地处祁连造山带与塔里木陆块区交接部位的敦煌陆块、阿尔金大断裂北侧梧桐沟-红柳峡古元古代敦煌岩群基底岩系铅锌、铁、石墨成矿带上。晶质石墨矿体呈层状、似层状产出,产状与围岩一致,围岩和夹石与含矿岩石基本一致,围岩以二云石英片岩为主,次为大理岩,局部见斜长角闪片岩构成矿体的围岩。成因上,红柳峡晶质石墨矿属沉积变质矿床。空间上,红柳峡晶质石墨矿区处在堆若格特次级向形构造的南翼及其东部转折端部位。矿石类型有片岩型晶质石墨矿石和大理岩型晶质石墨矿石两种。本文通过对红柳峡晶质石墨矿矿区地质概况进行综合研究,旨在阐述晶质石墨矿矿体特征,简单探讨矿床成因及找矿标志;结合区域地质特征,提出勘查区及邻区找矿远景。

Philippine gorge crystalline graphite mining area is located in the qilian orogenic belt and the tarim block lu area transition part of the dunhuang landmass, north of the altun fault wutong groove-Philippine gorge paleoproterozoic dunhuang rocks basement rock series lead and zinc, iron, graphite metallogenic belt.Crystalline graphite ore body is layered and layered output, occurrence is in line with surrounding rock and surrounding rock and stone and ore rock, rock mass is given priority to with marble the schist, time for marble, local see long oblique Angle of flash schist constitute the surrounding rock of the ore bodies. The genesis of the deposit is a sedimentary metamorphic deposit. In space, the hongyanxia crystal graphite mining area is located in the south wing of the reactor and the eastern turning point of the subsection.The ore types have schist-type crystalline graphite ore and marble-type crystalline graphite ore. According to the field observations, the graphite mineral-rich rock formations are controlled by the second rock section of the dunhuang rockgroup. The lithological combination of the lithology is the Dali marble. In the whole exploration area, the distribution of graphite mineralization is strictly controlled by strata.In this paper, the geological situation of the crystal graphite ore deposits in hongliuxia is studied in this paper. The characteristics of the mineral deposits are discussed. Based on the regional geological characteristics, the exploration area and the adjacent area are proposed.