 | | Book (volume) | | especially along the southern slopes and ridges of the Pine Ridge Escarpment and along Whiteclay Creek near...plants and vertebrate remains. The breaks of the White River north of Crawford in Dawes Co. and the rather...chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and pits along the Platte...townagate, chalcedony, jasper, petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka, in the Snyderville...chalcedony, jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara R. and Minnechaduza |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book | | Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North...of commercial mining is also long, beginning with the Kenya opal mines of 4000 B.C. Mining began with gemstones...gemstones, instead of metallic ores, and mining for turquoise was enormously extended throughout the...to have owned emerald mines, and this glistening green gem has often been found in Bronze Age burial jewelry...red in color; assigned to Gad), agate (perhaps green · chalcedony or "chrysoprase"; Foreword xvi i |  | | Book | | Senos 0} want qa 8 ORE AL ravi Withdh Che 5q white 3 02 Industrial Minerals Geology and World...boundaries of the mineral industry are clear: the mining and milling of feldspar, for example, belong to...does not. But how does one draw the line between mining and manufacturing where brine from a salt well...districts, or a representative district if there are many. We name the chief mining companies, and give production...supply must come not merely from one district but from a single mine. Thus the physical properties of many |  | | Report (volume) | | Arizona, southeastern California, and southernmost Nevada 53 Schematic diagram showing structural position...The data for each deposit include placer type, mining method(s), production history, bedrock source,...the three deposit types. Tabulated data for each district include tonnage, grades, basement rocks, and references...gneiss-hosted gold model (No. 37c) is based on the Tumco mine group and American Girl-Padre y Madre mines in the...epithermal gold model (37d) is based on the Mesquite mine, southern California, which occurs in breccia fillings |  | | Report (issue) | | assessments of land areas _________ Geologic studies of mining districts and mineralbearing regions __ __________... California_______ Hawaii _____. Idaho ______. Nevada _____. Oregon_____. Washington ___. Special water-resource..._____________Department of the Interior DOMES ___Deep Ocean Mining Environmental Study DSDP _____________Deep Sea...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...generally similar to the greenstone belt at Pecos mine, but there is no evidence of nearby felsic eruptive |  | | Report (volume) | | assessments of land areas _________ Geologic studies of mining districts and mineralbearing regions __ __________... California_______ Hawaii _____. Idaho ______. Nevada _____. Oregon_____. Washington ___. Special water-resource..._____________Department of the Interior DOMES ___Deep Ocean Mining Environmental Study DSDP _____________Deep Sea...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...generally similar to the greenstone belt at Pecos mine, but there is no evidence of nearby felsic eruptive |  | | Report (issue) | | CONTRIBUTIONS TO THE GOLD METALLOGENY OF NORTHERN NEVADA Richard M. Tosdal editor Open-File Report 98-338-6...Contributions to the gold metallogeny of northern Nevada Preface R.M. Tbsdfl/.............................Regional crustal structure beneath the Carlin Trend, Nevada, based on deep electrical geophysical measurements...and its relation to gold belts in north-central Nevada: Overview and progress report V.J.S. Grawc/i.....autochthonous rocks that host gold along the Carlin trend, Nevada Augustus K. Armstrong, Ted G. Theodore, Robert |  | | Report (volume) | | BUDDINGTON Prepared in cooperation with the STATE MINING BOARD OF OREGON UNITED STATES GOVERNMENT PRINTING...Mineralized areas and mining districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-...CONTENTS Mineralized areas and mining districts Continued. Bohemia district Continued. Mineral deposits... CONTENTS Mineralized areas and mining districts Continued. Bohemia district Continued. Mines and prospects...___-_-___.-______-_-_____.__________._ Quartzville district..______-_----._______-_____-.-________-_-Location |
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