Item talk:Q310114

{

 "USGS Publications Warehouse": {
   "@context": "https://schema.org",
   "@type": "CreativeWork",
   "additionalType": "Conference Paper",
   "name": "Evidence for a high-level porphyritic intrusion below the Sunnyside epithermal vein deposit, Colorado",
   "identifier": [
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse IndexID",
       "value": "70243903",
       "url": "https://pubs.usgs.gov/publication/70243903"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse Internal ID",
       "value": 70243903
     }
   ],
   "inLanguage": "en",
   "datePublished": "2023",
   "dateModified": "2024-01-26",
   "abstract": "High-temperature quartz veins were identified in drill core at ~600 m below the Sunnyside epithermal base and pre-cious metal deposit in southwestern Colorado. The veins consist of early anhedral quartz that shows a bluish ca-thodoluminescence emission and hosts heterogenous silicate melt inclusions. The early quartz is overgrown by a later generation of quartz that exhibits euhedral termina-tions with oscillatory growth zones showing a bright pink to purple cathodoluminescence emission. Both types of quartz are crosscut by ubiquitous planes of vapor-rich inclusions and some hypersaline liquid inclusions. In addi-tion, secondary planes of intermediate-density inclusions occur. The petrographic characteristics of the two quartz types are similar to those in \u2018A\u2019 and \u2018B\u2019 veins encountered in shallow- and intermediate-depth porphyry deposits. The relationships at Sunnyside imply that these high-temperature veins formed from magmatic-hydrothermal fluids derived from an intrusion located not far below the lowest level of drilling. Sunnyside appears to be a rare example of an epithermal deposit that is directly connected to a high-level porphyritic intrusion.",
   "description": "4 p.",
   "publisher": {
     "@type": "Organization",
     "name": "Society for Geology Applied to Mineral Deposits"
   },
   "author": [
     {
       "@type": "Person",
       "name": "Guzman, Mario A",
       "givenName": "Mario A",
       "familyName": "Guzman",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0002-0940-148X",
         "url": "https://orcid.org/0000-0002-0940-148X"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Geology, Geophysics, and Geochemistry Science Center",
           "url": "https://www.usgs.gov/centers/gggsc"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Monecke, Thomas",
       "givenName": "Thomas",
       "familyName": "Monecke",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Colorado School of Mines"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Reynolds, T. James",
       "givenName": "T. James",
       "familyName": "Reynolds",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "FLUID INC."
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Casadevall, Thomas J. tcasadevall@usgs.gov",
       "givenName": "Thomas J.",
       "familyName": "Casadevall",
       "email": "tcasadevall@usgs.gov",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0002-9447-6864",
         "url": "https://orcid.org/0000-0002-9447-6864"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Geology, Geophysics, and Geochemistry Science Center",
           "url": "https://www.usgs.gov/centers/gggsc"
         }
       ]
     }
   ],
   "funder": [
     {
       "@type": "Organization",
       "name": "Geology, Geophysics, and Geochemistry Science Center",
       "url": "https://www.usgs.gov/centers/gggsc"
     }
   ],
   "spatialCoverage": [
     {
       "@type": "Place",
       "additionalType": "country",
       "name": "United States",
       "url": "https://geonames.org/4074035"
     },
     {
       "@type": "Place",
       "additionalType": "state",
       "name": "Colorado"
     },
     {
       "@type": "Place",
       "additionalType": "state",
       "name": "New Mexico"
     },
     {
       "@type": "Place",
       "geo": [
         {
           "@type": "GeoShape",
           "additionalProperty": {
             "@type": "PropertyValue",
             "name": "GeoJSON",
             "value": {
               "type": "FeatureCollection",
               "features": [
                 {
                   "type": "Feature",
                   "properties": {},
                   "geometry": {
                     "coordinates": [
                       [
                         [
                           -108,
                           40
                         ],
                         [
                           -108,
                           36
                         ],
                         [
                           -104,
                           36
                         ],
                         [
                           -104,
                           40
                         ],
                         [
                           -108,
                           40
                         ]
                       ]
                     ],
                     "type": "Polygon"
                   }
                 }
               ]
             }
           }
         },
         {
           "@type": "GeoCoordinates",
           "latitude": 38.0,
           "longitude": -106.0
         }
       ]
     }
   ]
 }

}