摘要
通过对珊瑚矿田长营岭－龙门冲地区岩石地球化学测量，圈定了该区Ｗ、Ｓｎ、Ｃｕ、Ｚｎ、Ａｓ、Ｂ、Ｆ等元素异常，原生晕严格受ＮＥ和ＮＷ两组断裂控制。综合评价认为处于长营岭钨锡矿带南延带的南风井多元素组合异常是矿异常，该异常明显地受ＮＥ（Ｆ９）断裂和ＮＷ（Ｆ１０）断裂控制，浓集中心位于Ｆ９断裂下盘，与长营岭矿区矿体在ＮＷ断裂下盘富集的规律相同。测区内，异常形态与北区具连续性，异常强度弱于北区，组分分带显示以隐伏花岗岩为成矿中心，但沿矿带由ＮＥ到ＳＷ并无明显的组分分带和元素组合变化，矿田内不仅矿带南延并向ＳＷ方向倾伏，而且很有可能深部隐伏花岗岩体亦分枝向南延伸。
Through lithogeochemical surveying, the primary geochemical anomalies of elements W, Sn, Cu, Zn, As, B, F have been outlined in Shanhu W-Sn orefield, Changyingling-Longmenchong region. The primary halos are strictly controlled by two structural groups——NE and NW fractures. By comprehensive analyses, Nanfengjing multi-elements anomalies are regarded as ore anomalies, located in the southern extensive end of Changyingling W-Sn ore belt and obviously controlled by NE fracture(F9) and NW fracture ( F10) nearby their crossing point. The center of anomalous concentration is situated in the bottom wall of fracture F10, this is the same law as ore bodies enrich in the bottom wall of NW fracture in Changyingling deposit. In surveyed area, anomalous pattern has a continuity with the northern area (Changyingling), but its anomalous intensity is weaker than that of the northern area. The anomalous component zonality indicates that buried granite is the center of metallization, but there is not obvious component zonality and element association's variation along the ore belt from northeast to southwest, the ore belt of the W-Sn orefield not only extends and pitches towards southwest, but also it is very likely that the deep buried granite apophyses extend towards southwest.
出处
《广西地质》
1998年第1期51-58,共8页
Guangxi Geology
关键词
钨矿床
锡矿床
原生异常
找矿预测
primary geochemical anomaly, Shanhu W-Sn orefield, horizontal zonality
