Manganese Nodule

Science / Geology / Manganese Nodule: A rounded concretion, rich in manganese minerals with minor concentrations of cobalt, copper and nickel. These occur in abundance on some parts of the deep ocean floor and have been considered as a potential source of manganese.

Nodule

Science / Geology / Nodule: A mineral mass that has a different composition or is more weathering resistant than its surrounding rock. These are normally rounded in shape. Examples include: chert masses in a limestone rock unit, MORE

Manganese Nodule

Science / Geology / Manganese Nodule: A rounded concretion, rich in manganese minerals with minor concentrations of cobalt, copper and nickel. These occur in abundance on some parts of the deep ocean floor and have been considered as a po MORE

Manganese (Mn)

Science / Periodic Table of Elements / Manganese (Mn): Atomic number: 25, Atomic mass: 54.9380 g.mol -1, Electronegativity: 1.5, Density: 7.43 g.cm-3 at 20°C, Melting point: 1247 °C, Boiling point: 2061 °C, Vanderwaals radius: 0.126 nm, Ionic radius: 0 MORE

Manganese

Business / Machine Shop / Manganese: A gray-white nonmagnetic metallic element resembling iron, except it is harder and more brittle. Manganese can be alloyed with iron, copper and nickel, for commercial alloys. In steel it increases har MORE

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