A review of advanced instrumental drill core logging techniques in mineral exploration

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SR_2014-058-pdf
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Christie, A.B. 2014 A review of advanced instrumental drill core logging techniques in mineral exploration. Lower Hutt, N.Z.: GNS Science. GNS Science report 2014/58 30 p.

Abstract: Mineral exploration drill core is typically photographed and visually logged by a geologist within a short time following its recovery. New analytical techniques that can help this process include portable infrared and portable XRF instruments that give the geologist analytical information while they are logging the core. Recent studies have tested these techniques in New Zealand. Semi-automatic hyperspectral core scanners such as HyLogger have potential to provide considerably more information in terms of continuous analysis throughout the length of the core. A recent development has been the combination of several instruments in a multi-sensor core logger, namely: line-scan camera imaging, and gamma density, magnetic susceptibility, XRF, visible light and near infrared spectrometry measurements. The hyperspectral and multi-sensor core loggers have been used in several published overseas mineral deposit studies. However, the high cost of mobilisation, set-up and operation for logging core in New Zealand would need to be shared by several organisations for a number of different applications (auth)