Abstract:

Cangyi iron metallogenic belt, located in the Cangshan-Zaozhuang area, is a large sedimentary-metamorphic iron metallogenic belt and contains huge iron ore reserves. In order to adapt to the new situation of the iron ore exploration, the forecasting and prospecting model of this iron deposit type are built to improve the exploration efficiency in the region. The authors introduce metallogenic geological background briefly and clarifies the iron ore deposit characteristics of Nashan Villige area in detail. The iron ore bodies occur in the strata of the Shancaoyu Formation of the Neoarchean Taishan Group, displaying layered and stratiform-like. In this deposit, the iron ore is magnetite-amphibole quartzite and magnetite quartzite, and its industrial type is weak magnetic dressing type. This iron deposit belongs to the Anshan type of iron deposit.  The hydrogeological condition belongs to simple-medium classification associated with simple engineering geology feature and medium environmental geology type. The previous iron exploration in the region confirmed that the obvious part of magnetic anomaly is one of the most important prospecting criteria of Cangyi iron metallogenic belt. The regional comprehensive forecasting and prospecting models of this belt are built based on the rock types, mineralization age, ore-bearing strata, ore-bearing and ore-controlling structure, mineral assemblages, texture and structure, orebody occurrence, magnetic anomaly, gravity anomaly and topography.

Key words: Shandong Province, Cangshan County, iron deposit, forecasting