A New Approach to Characterizing Deposit Type Using Mineral Inclusion Assemblages in Gold Particles

Abstract Mineral inclusions within native gold are features of lode occurrences that preserved in detrital particles. Inclusion assemblages populations particles placers from specific localities revealed through inspection polished sections, and assimilation robust data sets permits reconstruction the source mineralogy. differ considerably according to deposit type, various approaches have been employed graphically represent inclusion We present a simple method for depicting comparing using single standardized radar diagram template illustrates proportions 11 metal five nonmetal (and metalloid) elements each assemblage. The Canadian Cordillera hosts many different gold-bearing types is an ideal terrane which develop globally applicable methodology. Although placer widespread, location nature mineralization commonly unclear. This study based on suites recorded 37 sample both localities. Radar diagrams describing show clear generic differences type. Diagnostic signatures established act as templates against samples unknown origin may be compared. approach differentiation between formed magmatic systems (low-sulfidation epithermal, calc-alkalic porphyry, alkalic porphyry), all distinguished orogenic (amagmatic) mineralization. Metallic element most useful differentiating hydrothermal systems, whereas nonmetallic allow classification subtypes. Comparisons mineral similar geologic settings worldwide suggest this fingerprinting applicable. Therefore, geochemical provide indication type applied exploration illuminate regional metallogeny areas where relationships deposits their source(s)