摘要
新疆鄯善小草湖硝酸盐矿床,近地表半裸露产出,具席状矿化特点。矿体形态简单,矿层平均厚度仅0.41m,NaNO_3平均品位为4.17%;矿区楔状盐溶裂隙发育,使矿体连续性遭到破坏。通过运用数理统计方法对矿体产状、矿层厚度、矿石品位、矿体连续程度等的分析,确定出合理的勘探面积、网度和储量级别。针对有异于一般矿床的某些特点,在勘探工程布置、取样及使用“含矿率”参数等方面采用了适当的处理方法。这对同类矿床的勘探工作,具一定的参考价值。
The Xiaocaohu nitrate deposit in Shanshan,Xinjiang,is characteristic of sheetmineralization,occuring as semiexposed near the surface.The orebodies aremorphologically simple,with a average thickness of 0.41m and a mean grade of 4.17% NaNO_3.They are usually destroied to different extents because of extensivedevelopment of wedgelike fissures in them caused by salt solution.Analyses of theorebodies' occurrence,thickness,grade and continuousness by using mathmaticalstatistics have led to rational determination of prospective area,prospecting network,and,even more,reserve division after exploring.In view of specific differencse fromother salt deposits,Xiaocaohu was explored in alternative ways in which prospectingengineerings were arranged,sampling was treated,and“ore rate”was introduced.Allthis may be used for reference when similar salt deposits are developed.
