Bulletin, Volumes 21-25Bureau of Mines and Mineral Resources, 1946 |
Índice
THE DEPOSITS | 11 |
Graph showing the increase in consumption of each of the three | 13 |
Geology of fluorspar New Mexico | 17 |
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Bulletin Abolfazl Jameossanaie,Howard B. Nickelson,Jane Calvert Love,Carol A. Hjellming,Darcy C. Boyle Visualização integral - 1987 |
Palavras e frases frequentes
20 feet adit albite America Bull andesite assays average barite bodies breccia brecciated zone Bureau of Mines calcite Canyon claims coarse Company contains country rock crystalline crystals dike district dolomite drift east exposed fault breccia feet deep feet long feet thick feet wide figs fissure fluorite fluorspar fluorspar deposits fluorspar veins formation formed fractures Geologist Geology Gila granite illus inches incl Jour Keyes Lea County limestone Mexico mica miles mill MINERAL RESOURCES Mountains northeast northwest outcrop Paleozoic pegmatite percent CaF2 Permian Petaca Plate porphyry pre-Cambrian prospect quartz quartzitic range sample sandstone Santa Fe School of Mines shaft shale Sierra Caballos Sierra County Silver City SiO2 Socorro southeast southwest Spar Steel stopes strikes stringers surface Survey Bull tactite Tertiary tons trenches U. S. Geol U. S. Geological Survey Valencia County Valley wall width Yeso Zuni