from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. , (mineralogy) A variety of hematite that is pseudomorphic after magnetite crystals.
from the GNU version of the Collaborative International Dictionary of English
- n. Iron sesquioxide in isometric form, probably a pseudomorph after magnetite.
from The Century Dictionary and Cyclopedia
- n. Iron sesquioxid in isometric crystals, probably pseudomorph after magnetite. It occurs occasionally on a large scale, as in the Lake Superior iron region and the Cerro de Mercado in Mexico.
Sorry, no etymologies found.