PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ash-fall, and reworked tuffs to zeolite, clay, carbonate, silica, and other minerals is common.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov