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Briefly describe the typical types of bauxite deposits in China

Release date:2018-09-28  source:中南选矿网  Browse times:656
       1) Xiuwen: Also known as carbonate rock weathering crust, sub-type accumulation of bauxite deposits. Its origin is related to the ancient weathering crust of carbonate rock karst red soil. And because there are several meters thick lake-phase iron ore lentils deposited between the bauxite and the underlying carbonate rock, the bauxite is not piled up in situ, but the red soil weathering near the lake that is near dry. The shells migrated from different places to accumulate. This type of deposit is typical of the Xiaoba Bauxite deposit in Xiuwen County, Guizhou Province. This is the most important type of bauxite mine in China, and its reserves account for 74.76% of this type (type I).
2) Xin'an type: also known as carbonate rock ancient weathering crust in situ accumulation of subtype bauxite deposits, which is more typical of Zhangyayuan bauxite deposit in Xin'an, Henan. Its reserves account for 5% of this type (type I).
3) Flat fruit type: also known as carbonate ancient weathering shell in situ accumulation - modern karst accumulation subtype bauxite deposit. The layered ore of the deposit is covered with limestone within a range of hundreds of meters of thickness. After Quaternary karstification, limestone and bauxite ore are re-weathered into calcium laterite and bauxite ore fragments fall. Stacked ore. It accounts for 15.04% of the total reserves of paleo-weather crust bauxite.
4) Zunyi type: also known as aluminosilicate ancient weathering crust in situ accumulation of subtype bauxite deposit, the underlying bedrock is fine clastic rock or basic volcanic rock, which is the in situ accumulation of underlying bedrock red earth weathering crust (a few slopes) of bauxite deposits. There is a continuous transition between the bauxite and the underlying bedrock, and the bauxite and the overburden have an erosional section. It accounts for 5.2% of the deposit of Type I deposits.
There is only one sub-category of laterite-type bauxite deposits, which is called the Zhapu-type laterite-type bauxite deposit. It is a bauxite deposit formed by the modernization (Quaternary) weathering of the Tertiary to Quaternary basalts. Its reserves are very Less, accounting for only 1.17% of China's total bauxite reserves.

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