About: http://webisa.webdatacommons.org/137112314

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	One problem that can crop up with VMS deposits is metallurgy ??? with some VMS deposits the mineral types and sizes can make it very difficult, if not economically impossible, to separate the metals.
http://www.w3.org/ns/prov#wasQuotedFrom	northernminer.com