from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A red to yellow-orange zinc ore, ZnO.
from The Century Dictionary.
- noun See
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) Native zinc oxide; a brittle, translucent mineral, of an orange-red color; -- called also
red zinc ore, and red oxide of zinc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A yellow, orange or dark-red mineral form of
zinc oxide, often also containing small amounts of manganese, with a chemical formula( Zn, Mn2+) O, an important ore of zinc.
Sorry, no etymologies found.
They consist of willemite and zincite, together with large amounts of franklinite (an iron-manganese oxide) and silicates, in a pre-Cambrian white crystalline limestone near its contact with a coarse-grained granite-gneiss.