Z Star will ensure that estimation is based on the geological
model – the foundation of any mineral resource estimate.
Z Star Principal Analysts are all geologists with extensive experience in mineral resource estimation.
This combination ensures that fundamental components of the geological model are incorporated into the ﬁnal mineral resource estimate. In this regard Z Star ﬁrmly believe in forging a close working relationship with the project geologists as the geological model is the foundation of any mineral resource estimate.
The application of geology for optimal mineral resource estimation
All mineral resource estimation should be undertaken in accordance with the geological model on both a regional and local scale. Of particular importance is the emplacement, depositional and/or structural history which will determine the estimation domains and their boundary conditions and thus ensure correct partitioning of data.
It is imperative that mineral resources are estimated in homogeneous zones that are typically deﬁned by the geology. However, cognisance must also be given to the correlation between geological zones and the associated variability expected in the grade data. A thorough understanding of this mineralisation model is key to accurate estimation of the mineral resource. Z Star have extensive experience in applying interpolation solutions to reﬁne geological boundaries.
Optimising drilling programmes
It is important to optimise geological drilling campaigns to ensure that a cost effective programme has been planned. It must also be remembered that a range of variables may be collected from geological delineation drilling e.g. density measurements or grade data. It is important that these programmes are optimised for the full range of parameters and not driven by a single requirement e.g. pierce points for a deposit boundary. Z Star have extensive experience in optimising multivariable sampling campaigns.