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Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique
In many instances total-rock and sieved-soil and stream-sediment samples lack the sensitivity and contrast required for reconnaissance exploration and necessary in the search for blind ore deposits. Heavy-mineral concentrates incorporate the required sensitivity and contrast but are overly expensive for two reasons: time-consuming sample preparation is required to obtain them, and they cannot be easily derived from all bulk-sample types. Trace-metal-content comparisons of the oxalic-acid-leachable portions with heavy-mineral concentrates show that the leachates are equal to the heavy-mineral concentrates in sensitivity and contrast. Simplicity of preparation and the resultant cost savings are additional advantages of this proposed method.
Suggested Citation
Alminas, H.V., Mosier, E.L., 1976, Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique: U.S. Geological Survey Open-File Report 76-275, 25 leaves :ill. ;27 cm., https://doi.org/10.3133/ofr76275.
ISSN: 2331-1258 (online)
Publication type
Report
Publication Subtype
USGS Numbered Series
Title
Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique