Assertion: chalcocite | /r/CapableOf | exert precipitative influence
Facets:
value: upon the precious metals
type: TRANSITIVE-OBJECT
Source sentences:
text: Although most of the great copper deposits of the world in which chalcocitization has been observed carry only low values in gold and silver in the original ore, such evidence as is available indicates that the chalcocite has exerted a precipitative influence upon the precious metals.