term,name,definition,category,provenance,provenance_uri,note halloysite,Halloysite,"Halloysite is an aluminosilicate clay mineral with the empirical formula Al2Si2O5(OH)4. Its main constituents are aluminium (20.90%), silicon (21.76%) and hydrogen (1.56%).",,Wikipedia,https://en.wikipedia.org/wiki/Halloysite,Added to support Critical Zone Observatory (CZO) data use cases.