About: http://webisa.webdatacommons.org/242561429

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	And a gneiss is a mineral that???s very old, that in many cases can be very, very old, this particular one dates to 3.7 billion years by this method.
http://www.w3.org/ns/prov#wasQuotedFrom	ncse.com