Description: Chalcopyrite Neves-Corvo Mine, Santa Bárbara de Padrões, Castro Verde, Beja District, Portugal Usually is not the underground workings the best place to study the metallogeny of a mine. Instead, the drill cores gives us better and more complete information about the geology and mineralogy of a mine. In the picture, a chalcopyrite stockwork (a network of ore veins)

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