Life expectancies of resources of selected commodities based on ... Chromitite. Pyrrhotite. Pentlandite. Sedimentary Deposits. Chemical Sediments. Paleoplacers ...
THE BUSHVELD COMPLEX: DYNAMIC PROCESSES AT ALL SCALES ... Chromium Great Dyke, Bushveld Antimony Murchison. Gold Witwatersrand Copper Various, e.g. O'Kiep, ...
Layered Igneous Intrusions IN THIS LECTURE Compositional Variation in Magmas Crystal Fractionation The Phase Rule Binary Systems Congruent versus Incongruent Melting
Partition coefficients and bulk repartition coefficient (Kd and D) ... Nb and Ta (Nb/Ta chondritic 15-20, less for crustal rocks) Zr and Hf (Zr/Hf chondritic 30-35) ...