Ultra-low density geochemical mapping in Zimbabwe

• A stream sediment geochemical survey is conducted in Zimbabwe for the first time.
• Compilation of geochemical maps for 41 elements.
• Revealing distribution feature of mineral resources from geochemical perspective.
• Delineation of main geochemical zones (provinces) in Zimbabwe.
• Perspective on strategic prospecting in Zimbabwe.

On the basis of the topographical and landscape features in Zimbabwe, an ultra-low density regional geochemical survey was conducted over all of Zimbabwe using stream sediment sampling of catchment basins. Sampling methods, elements to be determined and analytical methods for the ultra-low density survey of Zimbabwe are discussed. Regional geochemical maps were compiled based on the sample data and the features of the catchment basins, and the characteristic parameters of the geochemical background throughout Zimbabwe were calculated and are presented. The result of the nationwide geochemical mapping in Zimbabwe was evaluated. A summary of the features of the nationwide ultra-low density geochemical background in Zimbabwe is presented, a preliminary analysis was performed on the distribution of mineral resources and the geochemical provinces in Zimbabwe, and regional prospecting problems are discussed.