2.5. Sedimentary iron ore deposits

This type of deposits was formed by weathering, then broken, decomposed, transported of iron-bearing rock to low-lying basins, and after mechanical deposition, or some through the deposition of differentiation. Metallogenic times of sedimentary iron deposits are diverse with a proven mineral resource of 5 billion tons, accounting for 9% of China's total reserves. According to the sedimentary environment, there are two subtypes of this kind: marine type and lake facies type. Marine sedimentary iron deposits were produced in various geologic periods after Neoproterozoic. It is represented by "Xuanlong" iron ore of Pangjiabao and the "Ningxiang" iron ore Ningxiang in Hebei Province.

#### 2.6. Weathered leaching type iron ore deposits

These deposits are formed by weathering and leaching of the rich iron rocks and/or ironbearing polymetallic ores, and iron ore was accumulated on the residual slope. This type is shallow and mainly of middle and small in reserve. They are mainly distributed in Guangdong, Guangxi, Fujian, Guizhou and Jiangxi Provinces. The reserves of proven deposits are 300 million tons, accounting for 0.5% of the total reserves of the country.
