贵州瓮安永和磷矿地质特征及控矿因素分析  

Analysis on Geological Characteristics and Ore Controlling Factors of Yonghe Phosphate Rock in Weng'an, Guizhou

作　　者：郑义 刘志臣[1,2] 汪洋[1] 

机构地区：[1]贵州省地矿局一0二地质大队,贵州遵义563003 [2]中国地质大学地球科学学院,湖北武汉430074

出　　处：《西部探矿工程》2018年第3期119-123,128,共6页West-China Exploration Engineering

基　　金：贵州省地质矿产勘查开发局地质科学研究资助项目(黔地矿科合[2016]03号)

摘　　要：瓮安是贵州省磷矿的重要产区之一,磷矿在当地乃至贵州具有重要的战略及经济意义。针对永和磷矿区地质特征开展宏观和微观的研究,并分析磷矿形成的环境及控矿因素。结果表明:研究区磷矿形成于晚震旦世陡山沱期,由上、下2层磷块岩组成,主要为砂屑状、假鲕状、凝胶结构;条带状构造、团块状构造及致密块状构造;矿石矿物为胶磷矿,含量约30%;脉石矿物主要为石英、白云石、海绿石等。成矿环境为潮下海湾浅滩环境,海滩能量的差异影响着磷矿石的不同结构成因类型。控矿因素主要为:古构造、古地理、古气候及层位因素,其中,古地理因素是研究区最主要的控矿因素。Weng＇an is one of the important areas rich in phosphate ore in Guizhou Province, which has important strategic and economic significance in the region as well as in Guizhou. Based on the geological characteristics of Yonghe phosphate rock area, macro and micro studies were carried out, and the environment and ore controlling factors of phosphate rock formation were analyzed. The results showed that the phosphate rock in the study area was formed during the late sinian, it consists of upper and lower two layers of phosphorite, mainly for sand like, pseudo oolitic, gel structure, banded structure, agglomerate structure and compact massive structure. Ore mineral is phosphorite, its content is about 30%. The main gangue mineral is quartz, dolomite, glauconite etc. The metallogenic environment is the intertidal bay shoal environment, and the differences of beach energy affect the different structural genetic types of phosphate rocks. The main ore controlling factors are paleogeography, paleogeography, paleoclimate and horizon. Among them, paleogeographic factors are the main ore controlling factors in the study area.

关 键 词：磷矿 地质特征 控矿因素 贵州瓮安 

分 类 号：P56[天文地球—构造地质学]