Study the model of structural function for evaluation of the change of copper content,

 contributing to the orientation of the exploration: A case study Sin Quyền copper deposit, Lào Cai

Trương Xuân Luận, Trương Xuân Quang,
Nguyễn Tuấn Anh, Nguyễn Chí Công, Nguyễn Thị Hải Yến

This paper introduces the study results of the structural function model for comprehensive evaluation of three-dimensional change of copper content at Sin Quyền mine. The results indicated that: Based on the Open Source Software SgeMS, authors have already developed a set of Geostatistical Software Tool for calculating and modeling spatial structural function model by using the five most common  models: spherical, exponential, Gausian, linear and pure nugget effect. The model has been successfully applied for ore-bodies, which have nearly vertical dip, complicated variation; exploration works in the study area are bending, deviating boreholes with different azimuth. The main exploration lines direction determined by using the structural function model is North-South. These lines sometimes parallel/not parallel to each other or are none-linear. The density of exploration network for mineral reserves of grades 121 and 122 are [(40x30)±5 m] and [(75x60)±10 m], respectively.

Keywords: model of structural function, copper deposit, Sin Quyền - Lào Cai