- an amorphous hydrated ferric oxide, varying in color from dark brown to yellow, used as an ore of iron.
Origin of limonite
1815–25; < Greek leimṓn meadow + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for limonite
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.The A B C of Mining
Charles A. Bramble
Magnetite or magnetic iron ore, specular iron, and limonite are also oxides of iron.Geology
Near Lithgow extensive deposits of limonite, or clay-band ore, are interbedded with coal.
The green sand when weathered is brown or rusty coloured, the glauconite being oxidized to limonite.
- a common brown, black, or yellow amorphous secondary mineral that consists of hydrated ferric oxides and is a source of iron. Formula: FeO(OH). n H 2 O
C19: probably from Greek leimōn, translation of earlier German name, Wiesenerz meadow ore