CHROME MINING IN ZIMBABWE Mining of Podiform resource has been for over 100 years. The known open pittable resource across the Great Dyke has almost been depleted. Isolated patches of mostly low grade and friable ores remain. The same applies for pods off the Great Dyke. World reknown Shurugwi ore bodies are almost depleted. HISTORY
Largest high grade chrome ore resources in the world in 11 narrow but persistent seams on the Great Dyke gt; 3 billion tonnes Alluvial and eluvial deposits associated with the Great Dyke proving to be significant Locally the concentration ranges from 3% to 35% of the soil.
Chromite ore is the only commercial source of chromium. About 80% of world production comes from India, Iran, Pakistan, Oman, Turkey and Southern Africa . In Zimbabwe, chrome occurs in two distinct geological environments; the Great Dyke and the Greenstone belts.
Chrome is mainly mined along the Great Dyke of Zimbabwe and occurs as seam/stratiform deposits. In greenstone belts off the dyke, it occurs as podiform structures in serpentinites, e.g. in Zimasco mine on Shurugwi Mashava. In Mashava chrome is found in greenstone remnants in the Limpopo mobile belt south of Mberengwa.
Sizing is the general term for separation of particles according to their size. The simplest sizing process is screening, or passing the particles to be sized through a screen or number of screens. Screening equipment can include grizzlies, bar screens, wedge wire screens, radial sieves, banana screens, multi deck screens, vibratory screen, fine screens, flip flop
Chrome is mainly mined along the Great dyke of Zimbabwe and occurs as seam/strati form deposits. In greenstone belts off the dyke it occurs as podiform structures in serpentinites, e.g. in Zimasco mine on Shurugwi Mashava. In Mashava chrome is found in greenstone remnants in the Limpopo mobile belt south of Mberengwa.