from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hydrated iron oxide related to hematite
from The Century Dictionary and Cyclopedia
- n. A variety of goethite occurring in columnar forms with a scaly or fibrous structure.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a red to reddish brown mineral consisting of iron oxide hydroxide; often found in iron ores together with goethite
Sorry, no etymologies found.
There are various subtypes: goethite (needle iron ore, pyrrhosiderite): a-FeO (OH), lepidocrocite (ruby glance): b-FeO (OH), limonite: (by appearance) amorphous.