| Abstract: | A hot hydroxylamine hydrochloride (H-Hxl) extraction in 25% acetic acid is compared with the commonly used oxalic acid extraction as a method of anomaly enhancement for Cu and Zn in samples from two very different metal deposits and climatic environments. Results obtained on minus-80-mesh stream sediments from an area near the Magruder massive sulfide deposit in Lincoln County, Georgia, where the climate is humid subtropical, indicate that H-Hxl enhances the anomaly for Cu by a factor of 2 and for Zn by a factor of 1.5, compared to the oxalic method. Analyses of Fe oxide-coated rock samples from outcrops overlying the North Silver Bell porphyry copper deposit near Tucson, Arizona, where the climate is semi-arid to arid, indicate that both techniques effectively outline the zones of hydrothermal alteration. The H-Hxl extraction can also perform well in high-carbonate or high-clay environments, where other workers have suggested that oxalic acid is not very effective. Therefore, the H-Hxl method is recommended for general exploration use. ?? 1982. |
| Genre: | Article |
| ProdID: | 70011910 |
| Citation Author: | Filipek, L. H.; Chao, T. T.; Theobald, Jr. , P. K. |
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| Citation End Page: | 47 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geochemical Exploration |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | Comparison of hot hydroxylamine hydrochloride and oxalic acid leaching of stream sediment and coated rock samples as anomaly enhancement techniques; 1982; Article; Journal; Journal of Geochemical Exploration; Filipek, L. H.; Chao, T. T.; Theobald, Jr. , P. K. |
| Citation Start Page: | 35 |
| Citation Volume: | 17 |
| Citation Year: | 1982 |
| Type: | citation/reference |
| Text: | Comparison of hot hydroxylamine hydrochloride and oxalic acid leaching of stream sediment and coated rock samples as anomaly enhancement techniques; 1982; Article; Journal; Journal of Geochemical Exploration; Filipek, L. H.; Chao, T. T.; Theobald, Jr. , P. K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1982 00:00 -0600 |
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