Gold nugget. Gold is most commonly found naturally as a free metal called native gold. It once formed the basis of monetary systems and is used as jewellery,due to its rarity,attractive appearance and lack of tarnishing. Gold has an atomic number of 79 and a relative atomic mass of 196.97. This nugget is from West Australia,weighing 20 grams and measuring 1 centimetre across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5347 px × 4235 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |