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One of the largest hydraulic mines (1.6 km2) is located in California’s Sierra Nevada within the Humbug Creek watershed and Malakoff Diggins State Historic Park (MDSHP). MDSHP’s denuded and dissected landscape is composed of weathered Eocene auriferous sediments susceptible to chronic rill and gully erosion whereas block failures and debris flows occur in more cohesive terrain. This data release includes a 1992 digital surface model (DSM), 1992 orthophoto mosaic, masked orthophoto of the study area, 1992 ground cover classification, and 1992 pruned DSM with the vegetation bias removed. Stereo-photogrammetry was used to create a 1992 digital surface model (DSM) and orthophoto mosaic from archived aerial photographs....
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Map, report, and geospatial data on the geology of the northeastern part of the 1:250,000 scale Dillingham quadrangle, Alaska. Includes Ar40/39 radiometric ages, geologic unit descriptions, and correlation of map units.
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This location is part of the Arizona Mineral Industry Location System (AzMILS), an inventory of mineral occurences, prospects and mine locations in Arizona. Coconino535 is located in T28N R6W Sec 23 NE in the Dike Tantk - 7.5 Min quad. This collection consists of various reports, maps, records and related materials acquired by the Arizona Department of Mines and Mineral Resources regarding mining properties in Arizona. Information was obtained by various means, including the property owners, exploration companies, consultants, verbal interviews, field visits, newspapers and publications. Some sections may be redacted for copyright. Please see the access statement.


map background search result map search result map Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska ADMMR mining collection file: Sbf Breccia Pipe Aerial photograph of southern Cerbat Mountains showing Mineral Park Footloose, Photo Index Diagram Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1976 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P1 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P4 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1979 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P3 from 1983 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T2 from 1983 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T6 from 1986 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T1 from 26 July 1996 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 16 July 1998 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 14 July 1999 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P2 from 2001 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 2001 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 2007 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P1, T1, and T3 from 2009 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P6 and P7 from 2011 1992 digital surface model Malakoff Diggins State Historic Park, California Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T6 from 1986 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P3 from 1983 ADMMR mining collection file: Sbf Breccia Pipe Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T2 from 1983 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T1 from 26 July 1996 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1976 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1979 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P4 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 14 July 1999 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P1 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P2 from 2001 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P1, T1, and T3 from 2009 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P6 and P7 from 2011 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 2001 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 16 July 1998 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 2007 1992 digital surface model Malakoff Diggins State Historic Park, California Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska