About: http://webisa.webdatacommons.org/202566326

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	Greensand is a naturally occurring mineral that is mined from ancient sea floor deposits and it has been used as a fertilizer since the 1700s.
http://www.w3.org/ns/prov#wasQuotedFrom	freeplants.com