Some elements naturally and continuously emit spontaneous gamma radiation as they decay. Abundant radioactive elements in rocks include Potassium (k), Thorium (Th) and Uranium (U).
Radon gas is also emitted from granites and can be a noise source in airborne surveys.
Minerals containing these and other radioactive elements can be mapped remotely by measuring their differing gamma radiation energies in units of keV.
Gamma radiation can penetrate 1m through rock and hundreds of meters through the air. Circulation of groundwater can increase detection ranges up to 10 meters depth.
Airborne vs Ground Surveys
Significant gains in both spatial resolution and accuracy can be achieved by undertaking high-resolution ground surveys using airborne style instruments. This is a new concept for the coal industry and has the potential to revolutionise geological hazard mapping the way high-resolution ground magnetics did 10 years ago.
Pico Envirotec Specifications
- Model Number – GRS-2
- Crystal Size – 4 litres
- Channels – 256
- Channel Range – 11.8 keV – 3000.0 keV
- Crystal Type – NaI
- Power – 12V 2.8A
- Weight – 25kg
- Length – 830mm
- Height – 220mm
- Width – 220mm
- Mineral Exploration
- Sand Mine Remediation (Monazite)
- Radioactive Spills (U, Pu)
- Coal Exploration (Acidic Intrusions)
- Rapid Imaging and Data Turn Around
- Opal Exploration (Mound Springs)
- Real Time Results
- Safe Battery Operated