N'Chwaning II is a vertical skip shaft, currently still in production with an underground crushing facility.

[3] The ore body was discovered in 1940 by Assmang, and led to the acquisition of a manganese outcrop.

[4][3] The N'Chwaning mines are situated in the Kalahari Manganese Fields, with the primary ore hosted in the Hotazel Formation of the Griqualand West Sequence, forming part of the Proterozoic Transvaal Supergroup.

[6] The ore body shows extreme faulting and hydrothermal upgrading, responsible for the formation of a large majority of the mineral species described from the Kalahari Manganese Fields.

Zoning exists within the ore body both in the vertical and horizontal sense, where horizontal zoning is fault related and shows high grade hausmannite ore, intermediate areas show a very complex mineral assemblage (including braunite and jacobsite), while distal areas have a lower grade ore consisting predominantly of braunite and kutnohorite.