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The deposit is in the late 1950s to the mid-1960s census, exploration and early 1980s identified a large molybdenum mine. Total proved reserves amounting to 1,337,000 t, Nannihu low grade deposit, is 0.076%, three village high grade ore, was 0.115%. 

 

The deposit consists of Nannihu molybdenum deposit and three village consisting of molybdenum and tungsten deposit. Nannihu total of 62 ore bodies occur in addition to a small part of the rock and foreign, mostly produced in the outer contact zone of rock North West, North East to calcium silicate hornfels and felsic biotite hornfels. The maximum length of the 1st orebody 2400m, width of 1179m, thickness 2 ~ 420m; Sandaozhuang molybdenum and tungsten ore is mainly produced in the skarn in calcium. Layered or stratiform ore output at its top and bottom parts of the sporadic presence of small ore bodies, and possessed of the phenomenon of composite. The main ore body length of the upper 1420m, width of 1120m, thick generally 80 ~ 150m. 

 

Molybdenum, tungsten ore spatial distribution and structure, lithology and hydrothermal metasomatism intensity. Main types of natural ore skarn (51% metal reserves), hornfels-type (hornfels-type felsic plagioclase + diopside hornfels-type, 42%) and granite (7%). Mineralization associated with K-feldspar alteration, silicification, phyllic and carbonate and so, mineralization and alteration showed multiple stages. 

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