关键词: 祁漫塔格, 矽卡岩, 三维建模, 那西铁多金属矿床, 低缓磁异常, 找矿预测, 三维可视化, 沙丘覆盖区

Abstract:

The Qimantage area is one of the important metallogenic belts in China, known for large scale deposits of Fe-Cu-Pb-Zn-W-Sn-Au-Co and other polymetallic mineral. The Nalingguolehexi area, located in the eastern section, is particularly rich in iron, copper, and zinc skarn polymetallic minerals. However, exploration and research of polymetallic minerals in the area are hampered by thick gravel, stones and sand dunes, limiting geological and geochemical measurement methods. This article focuses on the magnetic anomaly zones (M1 and M3) ofthe Nalingguolehexi (Naxi)  iron polymetallic ore. Using Surpac three-dimensional modeling software, three-dimensional solid models of each ore-controlling geological elements were established. Through advanced three-dimensional visualization technology, geological structure models were constructed. By integrating and analyzing abundant geological data, the spatial distribution laws of ore bodies and their spatial relationship with mineralization structures were clarified. This enhanced understanding of mineralization laws allows for a transparent view of the key Naxi area down to 1 500 m and identifies eight deep marginal prospecting target areas, supporting mineral resource prediction, evaluation, and exploration planning in the Naxi mining area.

Key words: Qimantag, skarn, three-dimensional modeling, Naxi iron polymetallic deposit, low-rate magnetic anomaly, prospecting prediction, three-dimensional visualization, dune-covered area