OTCQX:BALMF - Post by User
Comment by
Minefinder1on Sep 20, 2012 8:08pm
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Post# 20393418
RE: RE: Capped vs uncapped
RE: RE: Capped vs uncapped Capping is a statistical method used to minimize the effect of extremely high-grade intercepts on a broader interval. If for instance you had 100 g/t over a 1 meter width and and the next nine metres averaged only 1 g/t it would be somewhat misrepresentative to report that you had intersected 10.9 g/t over 10 metres when in fact one sample is carrying the bulk of the grade. Thus the 100 g/t sample would be "capped" at some arbitrary grade (say in this example 10 g/t) and thus the intercept becomes a "statistically more representative" 1.9 g/t gold over 10 metres.
Capping most commonly employed when dealing with lower overall average grade mineralization which has a some much narrower high grade intervals within it and best employed in bulk tonnage situations. In high or bonanza grade situations - especially where the gold is present as visible gold and thus readily recoverable, capping will tend to under-report the actual recoverable gold content but remains a feature of most 43-101 based resource estimates.
Has no baring on the quality of the result, merely a statistical tool nominally designed to provide a better approximation of average or bulk grades