Abstract
Low-grade Mamatwan-type sedimentation manganese ore has been upgraded to high-grade Wessels-type ore in the Kalahari manganese field. The alteration appears to be of hydrothermal (metasomatic) origin closely related to zones of ferruginization (hematitization) developed along major north-south- and minor east-west-trending normal faults and fractures. The faults and fractures appear to have acted as channelways for the hydrothermal fluid causing metasomatic alteration of the manganese ore. -from Authors
| Original language | English |
|---|---|
| Pages (from-to) | 823-844 |
| Number of pages | 22 |
| Journal | Economic Geology |
| Volume | 90 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1995 |
ASJC Scopus subject areas
- Geophysics
- Geology
- Geochemistry and Petrology
- Economic Geology