The leucocratic Bloedkoppie Granite is generally considered to be the source rock of most of the uranium concentrated in the nearby Langer Heinrich calcrete-hosted uranium deposit. Ground gamma-ray radiometric measurements for K, U and Th along two survey profiles within the Bloedkoppie Granite showed that the intrusive body is uranium-rich with 15 ppm U and 33 ppm Th. Pegmatite dykes within the granite contain relatively higher U concentrations (23 ppm) compared to the granite (10 ppm).