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A Statistical Interpretation of Sample Assay Data from the Getchell Mine, Humboldt County, Nevada.

Koch GS Jr.; Link RF

NTIS: PB 192 003 :23 pages

10009026

The distribution of gold in part of the Getchell Mine, Humboldt County, Nevada, is presented through the statistical analysis of 956 assays of rock cuttings from wagon-drill holes. Two methods to predict grade in undeveloped parts of the ore body are evaluated, and the possibility of sampling bias is tested. The distribution of gold is compared with that in three other Nevada gold deposits of the same type characterized by gold particles mostly of submicron size associated with carbonaceous rocks, and also with that in deposits with coarse-grained gold. Usually, fewer samples of a given type are required to make a satisfactory grade estimate for submicron deposits than for coarse-grained deposits. The economic consequence is that submicron gold deposits are likely to be less expensive to sample and evaluate than coarse-grained deposits.

19700101

IH; Report of Investigation;

1970

PB-192003

A03

RI 7383

DRC;

NTIS: PB 192 003

NV;