<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1G00.sch" 
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<Product_Context xmlns="http://pds.nasa.gov/pds4/pds/v1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1G00.xsd">
  <Identification_Area>
    <logical_identifier>urn:nasa:pds:context:investigation:other_investigation.astromat_data</logical_identifier>
    <version_id>1.0</version_id>
    <title>Astro Material Geochemical Data</title>
    <information_model_version>1.16.0.0</information_model_version>
    <product_class>Product_Context</product_class>
    <Modification_History>
      <Modification_Detail>
        <modification_date>2021-10-04</modification_date>
        <version_id>1.0</version_id>
        <description>
          Geochemical data acquired by laboratory studies of extraterrestrial materials either recovered on Earth (i.e., meteorites)
          or brought to Earth via sample return missions. Initial creation conducted in conjunction with the archiving of initial data
          provided by Kerstin Lehnert et al. via two PDART awards.
          
        </description>
      </Modification_Detail>
    </Modification_History>
  </Identification_Area>
  <Reference_List>
    <Internal_Reference>
      <lid_reference>urn:nasa:pds:astromat:data</lid_reference>
      <reference_type>context_to_associate</reference_type>
    </Internal_Reference>
    <External_Reference>
      <doi>10.17189/1523010</doi>
      <reference_text>Lehnert, Kerstin; Ji, Peng, An archive of laboratory data acquired on astromaterials samples.</reference_text>
    </External_Reference>
  </Reference_List>
  <Investigation>
    <type>Individual Investigation</type>
    <start_date>2004-08-13</start_date>
    <stop_date nilReason="unknown" xsi:nil="true"></stop_date>
    <description>
      Initially created in support of PDART efforts by Kerstin Lehnert et al., this investigation is designed to accumulate
      geochemical data of astromaterials acquired via terrestrial laboratory analyses. Geochemical and geochronology analyses
      of samples returned by space missions (e.g., HAYABUSA, Stardust, Apollo) are included, as are studies of materials recovered
      through terrestrial exploration (e.g., observed falls, Antarctic Search for Meteorites expeditions). Future missions with a
      sample return focus may also be included herein.
    </description>
  </Investigation>
</Product_Context>