Volume 22 Number 4
  • E-ISSN: 1365-2478



This paper deals with a case study on the application of auto‐correlation and spectral analysis methods to mineral assay data taken along seven drives and two winzes concerning the McTaggart's (West) lode of Kolar gold fields. The general model conceived in this study is: measured (estimated) ore grade at th location = value + error at th location. Employing an auto‐correlation function of the form e‐ a |k| for , the respective contributions of and to the total logarithmic variances for the data along drives and winzes are analysed. Smoothed spectral density estimates and their 90% confidence limits are computed for the series of data.


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  • Article Type: Research Article
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