chalcedony

ID: skos/Commodity/MIN4EU/chalcedony

Item class: Concept

Label (en): chalcedony

Label (hu):

Definition (en): Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite.- http://en.wikipedia.org/wiki/Chalcedony

Definition (hu):

Concept scheme: Commodity

Broader concept: MIN4EU list of commodities