About: http://webisa.webdatacommons.org/167769474

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	Quartz, SiO2, is a mineral, whereas glass is not because it lacks crystalline structure.
http://www.w3.org/ns/prov#wasQuotedFrom	nau.edu