Economic Geology and the Bulletin of the Society of Economic Geologists, Volume 33Economic Geology Publishing Company, 1938 - Geology |
Contents
CLIFFORD FRONDEL | 2 |
Discussion | 15 |
Oxidized Copper Ores of the United Verde Extension Mine G M Schwartz | 21 |
48 other sections not shown
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Common terms and phrases
abundant albite argentite associated atomic weight beds Bismuthinite blue bodies Bull calcite carbonate cent chalcocite chalcopyrite chloride coal color containing copper covellite crystals dendrites dikes diorite ECON enargite Eureka eutectic eutectic-like structure evidence excess sulphur famatinite fault feet field filming formation formed fractures galena Geological Survey geologist gold grade grains granitic gray Greenstone groundmass heating hematite Holmes hübnerite igneous indicate intergrowth intrusive iron isotopic limestone lode magma magnetite masses material matildite metadiorite metals miargyrite microscopic miles Mines monzonite observed Ocala limestone occur oligoclase Oreana oxidation pegmatite pentlandite phase present probably proustite pyrargyrite pyrite pyrr pyrrhotite quartz veins range replacement River rock lead samples scheelite sediments shale silica silver sulphide Smithite solid solution solubility specimens sphalerite stibnite stromeyerite surface Surv Sylvanite Sylvanite district temperature tion tungsten U. S. Geol veinlets volcanic zone