地质找矿论丛2025，Vol.40Issue(2)：167-174,8.DOI:10.6053/j.issn.1001-1412.2025.02.004
四川美姑南红玛瑙矿勘查类型与合理勘查工程间距研究
Study on prospecting types and grid spacing of Nanhong agate deposits in Meigu County,Sichuan Province
胡儒权 1魏宇 1张庆松 1王维华 1贺勇刚 1唐小容1
作者信息
- 1. 四川省冶金地质勘查院,成都 610051
- 折叠
摘要
Abstract
Nanhong agate deposits occurs mainly in the purple-red muddy and sandy conglomerate of the Xuanwei Formation with oil luster and bright colors.The agate is highly demanded in the market.Due to lack of exploration specifications the resource potential cannot be accurately evaluated and the exploration and development delayed.This paper takes the exploration of Waxi and Jiukou agate deposits as an exam-ple to analyze commonality and difference between exploration of agate deposits and metal placers.Based on the current placer exploration specification,correlation method is used to analyze the main geological factors affecting the exploration type and the influence degrees,to classify the exploration types.Then the sparse space method is used to discuss different exploration types' basic exploration work space.There are four main geological factors affecting the exploration type of the agate deposit,i.e.size of the ore body,morphology and internal structure of the ore body,the stability of the thickness and the uniform distribution of volumetric ore content.If the sum of the type coefficients ≥2.4,it is classified as type Ⅰ;the sum of the type coefficients between 1.8 and 2.3,type Ⅱ;and the sum of the type coefficients ≤1.7,type Ⅲ.It is recommended that 120 m～200 m× 50 m～80 m spacing is for type Ⅰ,80 m～120 m×30 m～50 m for type Ⅱ,40 m～80 m×20 m～30 m for type Ⅲ.The mentioned above provides a basis for the exploration and evaluation of the agate deposit and is of great significance to promote the conversion of ag-ate resource advantages into economic advantages.关键词
南红玛瑙/评价标准/勘查类型/稀空法/勘查间距/美姑县Key words
Nanhong agate deposit/exploration specifications/exploration type/sparse space method/exploration work spacing/Meigu County分类
天文与地球科学引用本文复制引用
胡儒权,魏宇,张庆松,王维华,贺勇刚,唐小容..四川美姑南红玛瑙矿勘查类型与合理勘查工程间距研究[J].地质找矿论丛,2025,40(2):167-174,8.
