Cuivre natif, AJO, Arizona

• Contributeur: Phil Degginger / Alamy Banque D'Images
• ID de l’image: CBPW4W
• Taille du fichier: 31,6 MB (2 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 4731 x 2338 px | 40,1 x 19,8 cm | 15,8 x 7,8 inches | 300dpi
• Date de la prise de vue: 28 octobre 2007

Informations supplémentaires

Copper, as native copper, is one of the few metallic elements to occur in uncombined form as a natural mineral, although most commonly occurs in oxidized states and mixed with other elements. Native copper was an important ore of copper in historic times and was used by pre-historic peoples. The mines of the Keweenaw native copper deposits of Upper Michigan were major copper producers in the 19th and early 20th centuries, and are the largest deposits of native copper in the world.

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