About: http://webisa.webdatacommons.org/324141927

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	April 26, 2012 01:12AM Ok well you might what to look somewhere else for defintions, let me rephrase that chert has variation in mineral composition, and chert can refer to many types of rocks, look that up as well.
http://www.w3.org/ns/prov#wasQuotedFrom	mindat.org