Gold, Silver and Other Metals in Scale--Puna Geothermal Venture, Hawaii
- Key words
- Puna Geothermal Venture; Hawaii; Gold; Silver; Scale Metals
- Location
- Puna, Hawaii
- Conference
- Geothermal Resources Council Transactions
- Year
- 2008
- Session
- Gold; Silver; Scaling; Brine chemistry
- Language
- English
Abstract
Recent analyses of scale collected from the surface equipment at PGV yielded highly anomalous values of gold, silver, copper, zinc, lead and multi-elements. The results from 12 separate sample locations of scale analyzed high-grade gold, ranging up to 17.2 troy ounces per ton (opt), and high-grade silver ranging up to 400 opt. Copper ranged up to 5.19 percent, zinc to 24.0 percent, and lead ranged to 4.44 percent. Other metals were also anomalous, with arsenic to 6,960 parts per million (ppm), selenium to 7,700 ppm, cadmium to 2,029 ppm, molybdenum to 2,060 ppm, antimony to 1,510 ppm, tellurium to 284 ppm, and thallium to 115 ppm.
Copyright 2008, Geothermal Resources Council. 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.