Geochemistry of drill core and hand samples from the Duluth Complex, Minnesota

This dataset includes geochemical analytical results of rock samples sourced from drill core and hand specimens from the South Kawishiwi, Bald Eagle, Crocodile Lake, Cucumber Lake intrusions, and the Logan Sills, in the Duluth Complex, Minnesota. The dataset includes whole-rock and elemental geochemistry information with analysis methods used and qualifier (filtered) information where applicable, along with CIPW (Cross, Iddings, Pirsson, and Washington) norm data. The data represents a 'best value' version of the data, where the analytical results sourced from the superior analytical method for a particular element were used. The best values methods were picked based upon the method with the lowest detection limit. When two methods had the same lower detection limit, the highest value analytical result was retained as the best value. If a sample was analyzed multiple times, the additional analysis values can be found in the columns ending in "..._all". This data release includes the following files: 1) .csv file (MCR_USGS_geochem_BV.csv) that includes analytical geochemical data and attribute information. 2) .csv file (MCR_USGS_geochem_data_dictionary.csv) of a data dictionary which includes the .csv file column heading and shapefile field definitions. 3) .csv file (MCR_USGS_geochem_methods.csv) of all methods used in the analysis and their descriptions. 4) .csv file (MCR_USGS_geochem_references.csv) that lists sources used in the Strat_03, Strat_04, and Strat_05 columns in the "MCR_USGS_geochem_BV.csv" file. 5) shapefile (MCR_USGS_geochem_locations.shp) representing the locations of samples and drill hole collars.

[
  "010:12"
]

[
  "geospatial"
]