本文選題：礦床地質(zhì)特征 + 礦物學(xué)特征　； 參考：《地質(zhì)通報》2017年06期

【摘要】：云南東川大笑鉛鋅礦床地處康滇地軸中段東沿的次一級隆起上,礦體賦存于白河廠背斜軸部南翼昆陽群望廠組的層間裂隙及羽狀裂隙中,呈脈狀、似層狀產(chǎn)出。礦石礦物主要為方鉛礦、銀和少量閃鋅礦、黃鐵礦,脈石礦物主要為石英、方解石。礦石結(jié)構(gòu)以自形-半自形-他形粒狀結(jié)構(gòu)、交代殘余結(jié)構(gòu)、變晶結(jié)構(gòu)為主。礦石構(gòu)造以浸染狀、塊狀、條帶狀、脈狀構(gòu)造為主。成礦作用劃分為熱液成礦期與表生氧化期,其中熱液成礦期劃分為3個成礦階段,第二成礦階段為鉛鋅的主要成礦階段,成礦溫度為140~220℃,成礦時代為印支晚期。工業(yè)礦體的形成是在印支運動強大的作用力驅(qū)動下,成礦元素活化-混合-遷移-聚集成礦,礦床成因類型為沉積-改造熱液礦床。
[Abstract]:The Dongchuan Kailai lead-zinc deposit in Yunnan is located on the secondary uplift along the east edge of the middle section of the Kangdian axis. The orebody occurs in the interlayer fissure and pinnatite fissure in the Wangchang formation of Kunyang Group in the south wing of the Baihe River back inclined axis. Ore minerals are mainly galena, silver and a small amount of sphalerite, pyrite, gangue minerals mainly quartz, calcite. The ore structure mainly consists of the granular structure, the metasomatic residual structure and the metamorphic structure. The ore structure is dominated by disseminated, massive, banded and veined structures. The metallogenic process is divided into hydrothermal metallogenic stage and supergenetic oxidation stage, in which the hydrothermal metallogenic stage is divided into three metallogenic stages, the second metallogenic stage is the main metallogenic stage of lead-zinc, the metallogenic temperature is 140 ~ 220 鈩，

本文編號：2007737