A geological survey of the Peko Gold Mine was conducted as part of the field activities of the Bureau of Mineral Resources in 1950. The objects of the survey were to study the factors localizing the ore, to suggest possibilities for the discovery of new oreshoots, and to plan a diamond drilling campaign to test these possibilities. J.F. Ivanac and B.P. Walpole mapped the geology of the mine. The plane table survey of the surface outcrops was carried out by E.M. Bennet. The results of the survey are presented in this report. History and production, general geology, economic geology, and the prospects of further discovery are discussed.

URL: https://geoscience.data.qld.gov.au/dataset/cr000116 CLONCURRY GOLD AND MINERAL FIELD, INVESTIGATION FOR LEAD, ZINC AND COPPER DEPOSITS, INTERIM REPORT COVERING THE PERIOD 1/6/1954 TO 30/11/1954

URL: https://geoscience.data.qld.gov.au/dataset/cr000117 CLONCURRY GOLD AND MINERAL FIELD, INVESTIGATION FOR LEAD, ZINC AND COPPER DEPOSITS, INTERIM REPORT COVERING THE PERIOD 1/10/1954 TO 31/12/1954

Data on gold deposits are extracted from an existing publication to enable analysis. The data comprise selected portions of a data set that are published by C.J. Hodgson in "Preliminary Report on the Timmins-Kirkland Lake Area Gold Deposits File," which is available online as a digital image of a report. As an image, the data set cannot be analyzed. Consequently, selected portions of the data set are re-published here in a text file. The datum for the latitude and longitude is not specified in the report and is assumed to be the North American Datum of 1927 (NAD27). The Ontario Geological Survey, Ministry of Northern Development and Mines, Ontario, Canada kindly granted permission to re-publish these data. Hodgson, C.J., 1983, Preliminary Report on the Timmins-Kirkland Lake Area Gold Deposits File, Ontario Geological Survey, Open File Report 5467, 434 p., 17 tables, 40 figures, 9 appendices, and 11 maps, available online at http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/OFR5467/OFR5467.pdf

Data on gold deposits are extracted from an existing publication to enable analysis. The data comprise selected portions of a data set that are published by C.J. Hodgson in "Preliminary Report on the Timmins-Kirkland Lake Area Gold Deposits File," which is available online as a digital image of a report. As an image, the data set cannot be analyzed. Consequently, selected portions of the data set are re-published here in a text file. The datum for the latitude and longitude is not specified in the report and is assumed to be the North American Datum of 1927 (NAD27). The Ontario Geological Survey, Ministry of Northern Development and Mines, Ontario, Canada kindly granted permission to re-publish these data. Hodgson, C.J., 1983, Preliminary Report on the Timmins-Kirkland Lake Area Gold Deposits File, Ontario Geological Survey, Open File Report 5467, 434 p., 17 tables, 40 figures, 9 appendices, and 11 maps, available online at http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/OFR5467/OFR5467.pdf

Sediment hosted gold deposits in Nevada were first mined in the 1960s from open pit mines with large tonnage and low grade resources. Since that time, continuing exploration and discovery have identified extraordinary resources, and together these deposits now form the second-largest gold endowment on Earth, surpassed only by the Witwatersrand Gold Fields of South Africa. The data herein are part of a larger U.S. Geological Survey (USGS) project to develop an updated geospatial database of mines, mineral deposits and mineral regions in the United States. The point and polygon layers within this database represent locations of mines, mineral occurrences (which includes deposits and prospects), and mining districts in an approximately 200-square mile area northwest of Carlin, Nevada. Tables contain additional information such as commodity, geology, deposit types, activity status, deposit resources, and mine production. The extent of surface workings, when visible on imagery, is also captured and shows the relative size of mining operations. All data were compiled from publicly available sources published from 1910 - 2017. Where possible, data were compiled from primary source reports rather than from syntheses of past reports. Although the selected area does not include the entire Carlin Trend, the area, which covers nine 7.5-minute quadrangles, does contain a wide range of deposit types described through a variety of public data and information. These data are being compiled by the USGS Mineral Deposit Database project with support from the Bureau of Land Management.

This report is a review of the Yukon mineral industry for 1971 and 1972 by the Northern Economic Development Branch of the Department of Indian Affairs and Northern Development. The information in this report was obtained from property visits, communication with company personnel, technical reports of companies, trade journals and reports of the Mining Recorders of the Dawson, Mayo, Watson Lake and Whitehorse Mining districts.

This report and digital data release presents 90 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 56 rock, 16 sediment, 5 soil, and 12 heavy mineral concentrate (pan concentrate) samples, as well as 1 sample of indeterminate type. Some of these samples were originally collected by the USBM as part of their mineral investigations in the Porcupine River drainage, northeastern Alaska, and a portion of the samples were collected as part of the National Uranium Resource Evaluation. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this report are being released in digital format as PDF files and .csv files. We provide analytical data, detection limits and, when available, the method documentation provided to us by the lab. We also provide the sample location in geographic coordinates, the sample material cited by the originating literature, a reference to the originating report, and the type of sample material that was obtained from the archive and sent to the lab.

A reconnaissance-level study of post-mining hydrogeochemical conditions was carried out at the Brewery Creek gold deposit within the Tintina Gold Province. The deposit is characterized byepizonal mineralization with a consistent arsenic-gold-mercury-antimony geochemical signature. Surface discharges and seeps in the area are naturally alkaline (pH=7.6-8.2), Ca-HCO3 ¯-SO4²¯ waters. Upstream from the recognized mineralization, waters contain <3 ¿g/L As and <1 ¿g/L Sb. Water samples immediately downstream from the ore bodies show maximum concentrations of 18 ¿g/L dissolved and 47 ¿g/L total arsenic, and 18 ¿g/L dissolved and 21 ¿g/L total antimony. Two kilometres below the mineralization, on lower Laura Creek, arsenic concentrations are diluted to background levels of <3 ¿g/L, and antimony levels are still slightly elevated at 9-10 ¿g/L. Comparison with hydrogeochemical data from Donlin Creek, an undeveloped epizonal deposit in Alaska, indicates that elevated concentrations of a few tens of ¿g/L arsenic and antimony are typical of waters draining such gold systems, regardless of their state of development. In addition to their usefulness for the construction of geoenvironmental models, these data also provide information for establishing exploration programs utilizing water sampling.