Hydrous sesquioxide of iron, an important ore of iron, occurring in stalactitic, mammillary, or earthy forms, of a dark brown color, and yellowish brown powder. It includes bog iron. Also called brown hematite.
Limonite - A brown, usually earthy hydrated oxide of iron, 2Fe2O3.3H2O.
a substance produced by the oxidation of iron-bearing minerals such as pyrite and magnetite. Limonite is a yellowish brown, soft mineral with no cleavage. It is a widely occuring mineral.
a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite
A mineral composed of iron oxides and water. Rust. Very common in many rocks after weathering at the Earth's surface. Imparts brown or yellow colors to many rocks.
a yellow-colored iron oxide mineral. Small amounts of it create yellow, orange, and yellowish-brown colors in rocks, especially sedimentary rocks.
A dark brown or yellowish-brown mineral with the chemical formula 2Fe2O3. 3H2O. Limonite is commonly formed by the oxidation of iron minerals.
called “brown hematite”; a hydrated ore mineral of iron with a variable composition (iron2oxygen3hydroxyl) that causes a range of color (brown/yellow/orange)
Hydrous oxide of iron, FeO(OH)-nH2O.
A general group of hydrous (contains water) ferric oxides, commonly having a dark brown or yellow-brown color.
An amorphous hydrated iron oxide, one of the chief constituents of gossan;
any of various minerals consisting of hydrated ferric oxide, found in gossans, lakes and marshes. [AHDOS
Limonite is an ore consisting in a mixture of hydrated iron(III) oxide-hydroxide of varying composition. The generic formula is frequently written as FeO(OH)·nH2O, although this is not entirely accurate as limonite often contains a varying amount of oxide compared to hydroxide.
