青海省乌兰县赛坝沟地区金成矿地质特征及找矿方向

Metallogenic geological characteristics and prospecting direction of the Saibagou area in Wulan county, Qinghai province

通过对青海省乌兰县赛坝沟地区金矿床勘查资料和野外工作的综合研究发现,赛坝沟地区金的成矿作用与志留纪岩浆活动有关,成矿物质来源于寒武-奥陶系滩间山群地层与岩浆热液。金矿体多位于北西-南东向破碎蚀变带派生的次级脆韧性断裂中,赋矿围岩为寒武-奥陶系滩间山群绿泥石片岩、斜长角闪片岩、加里东期英云闪长岩、斜长花岗岩。矿体规模小,矿石品位变化大。找矿标志为北西-南东向破碎蚀变带、褐铁矿化石英脉、黄铁绢英岩、化探异常等。该地区地质勘查工作程度低,具有一定的找金潜力。

A comprehensive study was conducted by collecting data on the exploration of gold deposits in the Saibagou area and integrating field investigations, and it was concluded that the gold mineralization in the Saibagou area was related to the Silurian magmatic activity, the ore-forming materials are derived from the Cambrian-Ordovician Tanjianshan Formation and magmatic hydrothermal fluids.The gold orebodies are mostly located in the secondary brittle-ductile fractures derived from the northwest-southeast fault-cracking alteration zone. The ore-bearing surrounding rocks axe chlorite schist, horn-angle horn schist, post-calendered diorite diorite and plagiogranite in Cambrian-Ordovician Tanjianshan Group. Ore body size is small, and ore grade changes greatly. The ore-prospecting sign is the northwest-southeast crushing alteration zone, limonite quartz veins, beresite, geochemical exploration anomalies. The low geological exploration work in this area and there will be great potential for gold exploration.