The system water-sodium oxide-silicon dioxide at 200, 250, and 300°
No abstract available.
Inorganic Chemistry↗
Geology topics
Jack J. Rowe
Publications and source records attributed to Jack J. Rowe.
Gold abundance in igneous rocks; bearing on gold mineralization
Review of quantitative data, restricted range in gold content (rarely more than 10 ppb, generally below 5 ppb), mafic rocks have more, so do early crystallizing minerals, no use in exploration, factors other than concentration determine mineralization; examples
Economic Geology↗
Determination of gold in phosphates by activation analysis using epithermal neutrons
A simple method is described for determining gold in phosphates and phosphatic materials. Samples in a cadmium container are irradiated with epithermal neutrons to minimize the formation of 32 P, while permitting the formation of adequate amounts of 198 Au. Fire assay-radiochemical methods are used to separate the 198 Au. Concentrations as low as 0.1 ppb can be determined readily while maintaining low radiation levels.
Journal of Research of the U.S. Geological Survey↗