Siderite - Definition and Overview

Siderite is also the name of a type of iron meteorite.

Siderite

Siderite is a mineral composed of iron carbonate FeCO₃. It is a valuable iron mineral, since it is 48% iron and contains no sulfur or phosphorus. Both magnesium and manganese commonly substitute for the iron.

Its crystals belong to the hexagonal system, and are rhombohedral in shape, typically with curved and striated faces. It also occurs in masses. Color ranges from yellow to dark brown or black, the latter being due to the presence of manganese.

Siderite is commonly found in hydrothermal veins, and is associated with barite, fluorite, galena, and others. It may also be deposited by sedimentary processes.

This article about a specific mineral, mineraloid, or type of rock is a stub. You can help Wikipedia by expanding it (http://www.wordiq.com/definition/Siderite).