Item talk:Q228040

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Project",
 "url": "https://www.usgs.gov/centers/gggsc/science/sediment-hosted-copper-deposits-lake-superior-portion-midcontinent-rift",
 "headline": "Sediment-Hosted Copper Deposits in the Lake Superior Portion of the Midcontinent Rift System",
 "datePublished": "September 30, 2019",
 "author": [
   {
     "@type": "Person",
     "name": "Jeffrey L Mauk",
     "url": "https://www.usgs.gov/staff-profiles/jeffrey-l-mauk",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-6244-2774"
     }
   },
   {
     "@type": "Person",
     "name": "Timothy Hayes",
     "url": "https://www.usgs.gov/staff-profiles/timothy-hayes"
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "This study is part of a comprehensive USGS data acquisition and multidisciplinary research effort to image and characterize the Midcontinent Rift and related mineral resources, to document mineral resource potential, and to evaluate the environmental impacts of past and future mineral resource development in the region."
   },
   {
     "@type": "TextObject",
     "text": "Unconventional platinum-group elements (PGE) in sediment-hosted copper deposits: We have compiled and reviewed studies of the Kupferschiefer deposits to document the location of gold (Au) and platinum-group element (PGE) mineralization in those deposits. The resulting information is being used to target lithostratigraphic horizons that are mostly likely to contain these elements in the Midcontinent Rift region. Geochemical analyses of samples from these intervals will be used to test whether Au and PGE mineralization is associated with sediment-hosted copper deposits in the Midcontinent Rift."
   },
   {
     "@type": "TextObject",
     "text": "Return to Mineral Resources Program | Geology, Geophysics, and Geochemistry Science Center | Geology, Minerals, Energy, and Geophysics Science Center"
   },
   {
     "@type": "TextObject",
     "text": "Ore mineralogy and genesis of sediment-hosted copper deposits: Our objectives are to describe the ore mineralogy and geochemistry of the Copperwood deposit. We will use modern analytical methods (petrographic analysis, SEM, microprobe, LA-ICP-MS) to document the silver and mercury in the ore minerals and to test for the presence of other critical and strategic elements in the ore minerals. We will collect whole rock geochemical data from the host rock Nonesuch Formation to test for geochemical fingerprints that can reflect widespread hydrothermal alteration."
   },
   {
     "@type": "TextObject",
     "text": "This project is focused on the sediment-hosted copper deposits of the Midcontinent Rift, with three main objectives: 1) describe the ore mineralogy and geochemistry of the White Pine and Copperwood deposits, 2) evaluate whether hydrothermal alteration in footwall rocks can be used as a vector towards ore, and 3) provide a careful scoping study to evaluate whether unconventional platinum-group element (PGE) resources may be associated with sediment-hosted copper systems in the Midcontinent Rift."
   },
   {
     "@type": "TextObject",
     "text": "The North American Midcontinent Rift System is a major metallogenic feature that contains"
   },
   {
     "@type": "TextObject",
     "text": "Alteration accompanying mobilization and transport of metals to sediment-hosted copper deposits: We are evaluating whether hydrothermal alteration in footwall rocks can be used as a vector towards ore. We will use whole rock geochemistry and petrography to test for sodium alteration of the aquifer and (or) source rocks related to copper mobilization and transport through the Copper Harbor Conglomerate by ore fluids en route to the White Pine and Copperwood deposits."
   },
   {
     "@type": "TextObject",
     "text": "Researchers will study the sediment-hosted copper deposits of the Midcontinent Rift to address these questions:"
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "Geology, Geophysics, and Geochemistry Science Center",
   "url": "https://www.usgs.gov/centers/gggsc"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "Mineral Resources Program (MRP)"
   },
   {
     "@type": "Thing",
     "name": "Deposit Characterization and Identification"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "Ore Deposit Genesis"
   },
   {
     "@type": "Thing",
     "name": "Critical Mineral Resources"
   },
   {
     "@type": "Thing",
     "name": "Mineral Resources Program"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   },
   {
     "@type": "Thing",
     "name": "Science Technology"
   },
   {
     "@type": "Thing",
     "name": "Geochemistry"
   },
   {
     "@type": "Thing",
     "name": "sediment-hosted copper"
   },
   {
     "@type": "Thing",
     "name": "Geologic Models"
   },
   {
     "@type": "Thing",
     "name": "Critical Minerals"
   },
   {
     "@type": "Thing",
     "name": "Minerals"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "copper"
   },
   {
     "@type": "Thing",
     "name": "Midcontinent Region Resources"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "Economic Geology"
   },
   {
     "@type": "Thing",
     "name": "Midcontinent Rift Region"
   },
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "Mineral Resources"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Mineral Resources Research"
   },
   {
     "@type": "Thing",
     "name": "Crustal Fluid Flow"
   },
   {
     "@type": "Thing",
     "name": "Mineralogy"
   }
 ]

}