Gold is a chemical element with symbol Au. Native means that it is found in its natural and pure metallic form, be it that it always has traces of silver, and may also contain traces of copper and iron. The gold in this sample, yellow as it is, is very pure and occurs on a substrate of a dark metamorphic rock. Actual width of full sample is 55 mm, provenance the Diamantina gold mine in the Minas Gerais state of Brazil. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 4808 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |