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The 'REA Gold Corporation Corporate Profile and Annual Report 1983' file is part of the A. F. Budge Mining Ltd. Mining collection. A. F. Budge Mining Ltd., a British company owned by Tony Budge, controlled properties across several western U. S. states and northern Mexico. The company was active in Arizona during the 1980s and into the early 1990s. The collection consists of economic geologic information including maps, logs, reports and records. A few properties make up most of the collection: Vulture, United Verde Extension and Korn Kob.
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These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube. Samples of surficial alluvium, rock, and archived core material from existing auger- or sonic-drilled monitoring wells in Hinkley Valley and the adjoining Water Valley, 140 kilometers (km) northeast of Los Angeles, California, were measured as part of an investigation of naturally-occurring and anthropogenic hexavalent chromium, Cr(VI), concentrations in local groundwater. Surficial alluvium samples were collected from small stream channels draining distinct geologic units, or from previously mapped river deposits, and generally consisted of silt, sand, and granules to small pebbles. Twigs...
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Temporal and spatial sources of silica for chert remain poorly constrained. Modern sources to the worlds oceans include silica in rivers > aeolian (dust) deposition > sea floor vents and submarine weathering. However, changes in aridity and dust flux during the Phanerozoic may explain variations in the ocean silica cycle and times and places of chert formation. The chemistry of fine quartz dust (FQD) provides a chemical mechanism for the transformation of FQD to polymorphs of silica in chert; FQD is readily dissolved, then reprecipitated as Opal-A by either biotic or abiotic processes. An unequivocal relation between increases in dust flux and biogenic opal-A in the western Pacific Ocean during the past 200 kyr...
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The 'Bluebird Mine' file is part of the Grover Heinrichs mining collection. Grover was the Vice President of Heinrichs GEOEXploration, located in Tucson, Arizona. The collection contains over 1,400 folders including economic geology reports, maps, photos, correspondence, drill logs and other related materials. The focus of much of the information is on the western United States, particularly Arizona, but the collection also includes files on mining activity throughout the United States, foreign countries, and 82 mineral commodities.


map background search result map search result map Cyclopic Gold Basin Drill Sections Quartz Area, Senator Morgan Mine Sacaton Mountains, Geochemical Map, Pb Victory and Adjacent Groups Claim Map Stonewall Mine File Drill Hole Location Map with Assay Data United Verde Extension 902 Drill Section 167 Degrees Gladstone McCabe, Lead-Zinc Soil Geochemistry, Turam E.M. and I.P. Anomolies Yuma Copper Mine Assay and Subsurface Map Artillery Peak Manganese Analysis of Special Composite Samples Artillery Peak Manganese Deposits Vertical Cross Sections Gold Prince Mine Assay Map Emerald Isle Mine Assay Map Sheet Number 7 I.P. and Geochem Progress of Bagdad Area Mile High, Surface and Underground Sampling Waer Claim Geochemical Survey, Molybdenum in PPM Kalamazoo Claim Map Grover Heinrichs mining collection: Bluebird Mine REA Gold Corporation Corporate Profile and Annual Report 1983 The chemistry of eolian quartz dust and the origin of chert Field portable X-ray fluorescence data for Hinkley and Water Valleys, San Bernardino County, California Mile High, Surface and Underground Sampling Field portable X-ray fluorescence data for Hinkley and Water Valleys, San Bernardino County, California REA Gold Corporation Corporate Profile and Annual Report 1983 The chemistry of eolian quartz dust and the origin of chert