minéral métallifère

CONT: Les principaux minéraux métallifères sont la pyrrhotite, la pentlandite, la violarite, la chalcopyrite et la cubanite.
CONT: Souvent considérée comme minéral de «gangue», [la barytine] constitue en elle-même un véritable minerai de baryum pour l'industrie chimique.

CONT: A mineral utilized as a source of a particular metal or chemical substance is often referred to as an ore mineral. Profitability is an important factor and some authorities restrict the definition of an ore mineral to those minerals from which a metal can profitably be extracted.
CONT: ... there are geologists who divide minerals of economic importance into two main groups: the ore minerals from which a metal (or metals) is extracted, and the industrial minerals in which the mineral itself is used for ... industrial purposes. ... Mines commonly possess mineral dressing plants in which the raw ore is milled before the separation of the ore minerals from the gangue minerals.