Portable X-ray Fluorescence Analyses Results for Heavy and Light Separates from Field Samples near Hinkley, California

Heavy and light mineral separates were extracted from the 36 collected field samples following a USGS procedure (Strong and Driscoll, 2016) and analyzed using the handheld portable X-ray fluorescence (pXRF) analyzer as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI), in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These pXRF results are part of a data release including grain size distribution, photographic and associated chemical and mineral analysis data for 36 sediment core and alluvium samples as well as Scanning Electron Microscopy analysis on select grains from magnetic and heavy mineral separates collected near Hinkley, CA. The cooperator for this study is the Lahontan Regional Water Quality Control Board.

Data and Resources

Field Value
accessLevel public
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identifier USGS:5b7591c8e4b0f5d5787fe501
metadata_type geospatial
modified 20200929
old-spatial -117.6202, 34.3425, -117.1071, 34.9972
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
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theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • atomic-emission-spectroscopy
  • background-level
  • california
  • chemical-analysis
  • chromium
  • ckan
  • contamination-and-pollution
  • geo
  • geochemistry
  • geoscientificinformation
  • geoss
  • groundwater
  • health
  • hinkley
  • mass-spectroscopy
  • national
  • north-america
  • rocks-and-deposits
  • scanning-electron-microscopy
  • soil-chemistry
  • unconsolidated-deposits
  • united-states
  • usgs-5b7591c8e4b0f5d5787fe501
  • x-ray-fluorescence
isopen False
license_id notspecified
license_title License not specified
maintainer Jean M. Morrison
maintainer_email jmorrison@usgs.gov
metadata_created 2025-11-21T23:35:16.739320
metadata_modified 2025-11-21T23:35:16.739325
notes Heavy and light mineral separates were extracted from the 36 collected field samples following a USGS procedure (Strong and Driscoll, 2016) and analyzed using the handheld portable X-ray fluorescence (pXRF) analyzer as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI), in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These pXRF results are part of a data release including grain size distribution, photographic and associated chemical and mineral analysis data for 36 sediment core and alluvium samples as well as Scanning Electron Microscopy analysis on select grains from magnetic and heavy mineral separates collected near Hinkley, CA. The cooperator for this study is the Lahontan Regional Water Quality Control Board.
num_resources 2
num_tags 26
title Portable X-ray Fluorescence Analyses Results for Heavy and Light Separates from Field Samples near Hinkley, California