2.4. Volcanic - intrusive type iron ore deposits

This type of deposit is associated with volcanic rocks and sub-volcanic rocks in a genetic relationship, with a proven reserve of 2 billion tons, accounting for 4% of the country's total reserves. It would be divided into continental volcano-intrusive iron ore and marine volcanointrusive iron deposits.

Continental volcanic-intrusive iron ore deposits are mostly associated with middle- or medium-acid volcanic rocks and are mainly produced in volcanic clasts or in the contact zones within and around the pluton. The mineralization age is Mesozoic. It is mainly located in Ningwu-Luzong area, often referred to as "porphyrite iron ore". In addition, the Jiaduoling iron ore deposit in Tibet and the Liangzi iron ore in Sichuan Province are also known as continental volcano-intrusive iron deposits.
