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Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique

Henry V. Alminas·Elwin L. Mosier
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Abstract

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.

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Henry V. Alminas, Elwin L. Mosier. 1976. Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly-accentuated technique. https://doi.org/10.3133/ofr76275

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