limonite

/lahy-muh-nahyt/US // ˈlaɪ məˌnaɪt //UK // (ˈlaɪməˌnaɪt) //

褐铁矿,褐煤,褐藻土,褐煤石

Definitions

n.名词 noun

1
Mineralogy.
- : an amorphous hydrated ferric oxide, varying in color from dark brown to yellow, used as an ore of iron.

Magnetite or magnetic iron ore, specular iron, and limonite are also oxides of iron.
The streak of limonite is yellow, thus distinguishing it from hematite.
The powder and streak of limonite are always yellow; it is an important ore.
In nature it is frequently altered to limonite with the separation of native sulphur.
Both ferrous carbonate and limonite, however, occur in irregular surface deposits.