- Nationality Korea
- Quantity 10
- Era Modern
- Exhibition Place -
- Material -
- Size(cm) 16.2×12.0
Manganese nodule is the mineral made in lump by the pressure of deep sea for 4,000m with the metal ingredients melted in sea water.
In addition to the main ingredient of manganese, it has iron, nickel, copper, cobalt and other metal ingredients.
It is grown in round shape with the core and circles with the dark gray color.
The size grows from several mm to several m with a few mm in million years.
Nickel and cobalt are required metal for high-tech industry in chemical, electronic, communication,
universe and others that it is a mineral resources for the future and is referred as the 'dark gold'.