Stillwater Complex, Montana: Logs of core drilled by Chrome Corporation of America in the Mountain View area, 1988 to 1990

This dataset includes TIFF (Tagged Image File Format) images of graphic drill core logs showing associated drill core information, a TIFF image of the explanation for the lithology and structure sections of the logs, an Esri shapefile of the locations of the drill holes, and 17 individual .csv files of tabular data that were compiled from handwritten drill core logs. The drill core is from the Mountain View area of the Stillwater Complex, Montana and was drilled from 1988 to 1990 by the Chrome Corporation of America. The data shown in the graphic drill logs and contained within the .csv files includes lithologic, structure, grain size, sulfide, chromite, chromium, platinum, palladium, copper, and nickel mineralization information. The graphic drill logs were created using Golden software's Strater 5 drill core visualization software and are provided with both logarithmic and linear scales. The graphic drill logs are plotted using the depth recorded in the drill logs and do not reflect true thickness. Two of the drill holes, MV89-550 and MV89-551, were logged by two different geologists (Dr. Roger Cooper and Rob Kell). The data shown in the graphic logs for those two holes were taken from Roger Cooper's logs, with the exception of the interval from 0 to 133 feet for drill hole MV89-550, which was taken from Rob Kell's log, as Roger Cooper did not log that interval for that particular drill hole. The .csv file names for Roger Cooper's logs contain "RC" in the file name and Rob Kell's contain "RK". Some intervals of the drill core that correlate to chromitite zones were logged at two different scales: 1"=1' and 1"=10'. All instances of question marks ("?") represent original data as written by the geologist. In areas where the hand-written notes were unreadable, the notation of "[unreadable]" was used. See USGS SIR 2014-5183 (https://pubs.usgs.gov/sir/2014/5183/) for report and spatial data relating to the Stillwater Complex.