Precious Metal Sampling at the Ohaaki Geothermal Field
- Location
- Ohaaki, New Zealand; Broadlands, New Zealand; Taupo Volcanic Zone
- Conference
- New Zealand Geothermal Workshop
- Year
- 1996
- Session
- Geochemistry
- Language
- English
Full text
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Abstract
A special downhole sampler has been built to sample for precious metals in deep geothermal reservoirs. During the February 1996 shutdown period, samples were collected from two wells at the Ohaaki geothermal field. In the deep geothermal reservoir, gold concentrations of 0.5 - 1.16 ppb and silver concentrations of 5.7 -18.0 ppb were found. These results agree with previous approximate estimates of the gold and silver concentrations from surface derived measurements.
Copyright 1996, University of Auckland. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.