In situ U-Pb dating of apatite and rutile from St. Francois Mountains IOA and IOCG deposits, southeast Missouri

Apatite (Ca5(PO4)3(Cl/F/OH)) and rutile (TiO2) samples were collected by the U.S. Geological Survey (USGS) from the iron oxide-apatite-rare earth element (IOA-REE) and iron oxide-copper-gold (IOCG) deposits hosted by the Mesoproterozoic, St. Francois Mountains terrane, southeast Missouri. Samples were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) system at the USGS in Denver, Colorado from May 2016 to June 2019.

Data and Resources

Field Value
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identifier USGS:5fd7a280d34e30b9123cb492
metadata_type geospatial
modified 20210722
old-spatial -91.4167, 37.6192, -90.6334, 38.2645
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
  • apatite
  • boss-bixby
  • bourbon
  • ckan
  • crawford-county
  • dent-county
  • franklin-county
  • geo
  • geochronology
  • geology-geophysics-and-geochemistry-science-center
  • geoscientificinformation
  • geoss
  • gggsc
  • iron-county
  • kratz-spring
  • la-icp-ms
  • laser-ablation-inductively-coupled-plasma-mass-spectrometer
  • lead
  • mineral-deposits
  • mineral-resources-program
  • mrp
  • national
  • north-america
  • pea-ridge
  • pilot-knob
  • rutile
  • saint-francois-county
  • thorium
  • u-pb
  • u-s-geological-survey
  • united-states
  • uranium
  • uranium-lead-analysis
  • usgs
  • usgs-5fd7a280d34e30b9123cb492
  • washington-county
isopen False
license_id notspecified
license_title License not specified
maintainer Richard J Moscati
maintainer_email rmoscati@usgs.gov
metadata_created 2025-11-20T22:07:49.903771
metadata_modified 2025-11-20T22:07:49.903775
notes Apatite (Ca5(PO4)3(Cl/F/OH)) and rutile (TiO2) samples were collected by the U.S. Geological Survey (USGS) from the iron oxide-apatite-rare earth element (IOA-REE) and iron oxide-copper-gold (IOCG) deposits hosted by the Mesoproterozoic, St. Francois Mountains terrane, southeast Missouri. Samples were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) system at the USGS in Denver, Colorado from May 2016 to June 2019.
num_resources 2
num_tags 38
title In situ U-Pb dating of apatite and rutile from St. Francois Mountains IOA and IOCG deposits, southeast Missouri