| Abstract: | A homogeneous gold-quartz standard, GQS-1, was prepared from a heterogeneous gold-bearing quartz by chemical treatment. The concentration of gold in GQS-1 was determined by both instrumental neutron activation analysis and radioisotope dilution analysis to be 2.61?0.10 parts per million. Analysis of 10 samples of the standard by both instrumental neutron activation analysis and radioisotope dilution analysis failed to reveal heterogeneity within the standard. The precision of the analytical methods, expressed as standard error, was approximately 0.1 part per million. The analytical data were also used to estimate the average size of gold particles. The chemical treatment apparently reduced the average diameter of the gold particles by at least an order of magnitude and increased the concentration of gold grains by a factor of at least 4,000. |
| Genre: | USGS Numbered Series |
| ProdID: | 3643 |
| Citation Author: | Millard, Hugh T.; Marinenko, John; McLane, John E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 6 p. ;26 cm. |
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| Citation Publisher: | [U.S. Geological Survey], |
| Citation Series: | Circular |
| Citation Series Code: | CIR |
| Citation Series Number: | 598 |
| Citation Search Results Text: | Establishment of gold-quartz standard GQS-1; 1969; CIR; 598; Millard, Hugh T.; Marinenko, John; McLane, John E. |
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| Citation Year: | 1969 |
| Type: | citation/reference |
| Text: | Establishment of gold-quartz standard GQS-1; 1969; CIR; 598; Millard, Hugh T.; Marinenko, John; McLane, John E. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/circ/1969/0598/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/circ/1969/0598/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | [U.S. Geological Survey], |
