摘要
禾尚田钨矿为新发现并完成了普查评价的钨矿床,分为三个矿段,初步估算资源量达到了超大型规模,矿床类型为"产于碳酸盐岩中的石英脉带型黑钨矿白钨矿矿床"。钨矿体由密集的含钨细脉、网脉、少量薄脉、个别大脉与大理岩化碳酸盐岩组成,矿体与围岩需用化学样品分析结果划分。矿脉由浅往深未明显收敛合并,与典型的石英脉型钨矿所具有的"五层楼"分带模式存在明显差异。矿体赋存于向斜两翼,容矿构造为向斜翼部控制的层间裂隙带、次为节理。工业矿体众多达到171条,密集近平行分布,倾角较陡;矿体倾向延深≥走向延伸长度,钻孔控制钨矿体最深达到1500m,仍未见底。基于勘查规范和矿体特征,选取资源量1000t以上的51条主要矿体,统计出它们的五个地质因素及其类型变量系数,初步将禾尚田钨矿床划分为第Ⅱ勘查类型,同时将详查工程间距调整为100m×100m。
The Heshangtian tungsten deposit is newly discovered tungsten deposit with completed general survey and evaluation. It is divided into three ore sections,of which the preliminary estimate of resources reaches a super large scale. Its deposit type belongs to the quartz veinlet belt in carbonate host rocks,as scheelite deposit with wolframite. The tungsten ore is composed of dense tungsten veinlets and stockworks,with a small amount of thin veins,individual major veins and carbonate rocks of marblization. The ore and rock samples require chemical analysis division. From shallow to deep veins do not obviously converge and merge,notably different from a typical quartz vein type tungsten mine which has a ＂ five-storey＂ zonation pattern. Ore bodies occur in the syncline wings,and host structures are inter-layer crack zones controlled by syncline wings,next joints. The industrial ore bodies are as many as171,which are distributed tightly in a nearly parallel manner,with steep dips. The dip extension of ore bodies is larger than that in strike direction,and largest depth of drilling-controlled exceeds 1500 m. Based on the exploration codes and ore-body characteristics,this work selects more than 51 major ore bodies with resource 1000 t or more to make a statistics,resulting in five geological factors and other variable coefficients. It is determined tha the Heshangtian tungsten deposit belongs to the typeⅡ exploration,while spacing of detailed project investigation is adjusted to 100m×100m.
出处
《地质与勘探》
CAS
CSCD
北大核心
2015年第4期646-654,共9页
Geology and Exploration
基金
国土资源部与广东省人民政府合作矿产资源勘查项目
关键词
禾尚田钨矿床
石英脉带型钨矿
矿体地质特征
勘查类型
粤北
Heshangtian tungsten deposit
quartz veinlet belt tungsten deposit
ore geological features
exploration type
northern Guangdong
