About: http://webisa.webdatacommons.org/3651874

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	Slight chemical variations result from source heterogeneities, as well as the spatially variable degrees of melting, assimilation, and other factors.
http://www.w3.org/ns/prov#wasQuotedFrom	science.gov