“…Under this method, the score of minerals ' I' in each geographic unit variable ' j ' is standardized into Z score relative to the scores of other minerals by transforming all the scores to zero mean and unit standard deviation on the variable 'j'. The Z-score variate has been used extensively used by different scholars to analyze the spatial variation in the distribution of geographic attributes and to determine pattern of distribution (Parry et al, 2012;Korter and Ipinyomi, 2016;Antwi et al, 2016).…”