About: http://webisa.webdatacommons.org/283745501

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	Chemically, these rocks consist mostly of silica and magnesia with small amounts of water and other oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	nevada-outback-gems.com