About: http://webisa.webdatacommons.org/352990557

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	In most rocks, silicon is combined mainly with aluminium and oxygen, such as shales and clays.
http://www.w3.org/ns/prov#wasQuotedFrom	naturalmatters.net