<http://webisa.webdatacommons.org/153954674>	<http://www.w3.org/ns/prov#value>	"Precipitation may be brought about by chemical interchange with pyrite, chalcopyrite, pyrrhotite, sphalerite, and galena, the process being mainly replacement." .
<http://webisa.webdatacommons.org/prov/138236217>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/153954674> .
<http://webisa.webdatacommons.org/153954674>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nevada-outback-gems.com> .
<http://webisa.webdatacommons.org/153954674>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .