geochemical tin provinces of the East Indies or Bolivia) force an answer in the terms of the second question...places of extreme differentiation (e.g., at the Frood Mine and at Insizwa) bismuth and tellurium minerals are...peculiar bornite occurrences in the Ookiep area, Cape Province, are on one hand typical transition deposits;...(1940). 12 T H E ORE MINERALS FIG. 4 80 X Mouat Mine, Stillwater Valley, Montana RAMDOHR From a border... 16 T H E ORE MINERALS FIG. 9 8 X Colavi, Bolivia RAMDOHR Wolframite (hübnerite), in typical lath-shaped |