Abstract
Brief description of the several orogenic gold deposits is provided together with the basic principles of the gold projects evaluation. Emphasis is made on methodology of the gold deposits sampling, geological interpretation and estimation resources.
Common problems encountered when evaluating of the gold deposits are as follows:
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sample size (mass) is not representative (small) for a given mineralisation
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laboratory sampling protocols reduce sample mass at too coarse particle size
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analytical techniques are suboptimal for a given mineralisation
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strongly skewed statistical distribution of gold require using special techniques for preventing smearing of the high-grade values
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because of a strong variability of the grade at the short distances evaluation of these type deposits requires high density of drilling, up to 20 × 20 m grids, which is commonly supported by collection of the bulk samples.
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Abzalov, M. (2016). Lode Gold Deposits. In: Applied Mining Geology. Modern Approaches in Solid Earth Sciences, vol 12. Springer, Cham. https://doi.org/10.1007/978-3-319-39264-6_31
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DOI: https://doi.org/10.1007/978-3-319-39264-6_31
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