from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A red to yellow-orange zinc ore, ZnO.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
from the GNU version of the Collaborative International Dictionary of English
- n. Native zinc oxide; a brittle, translucent mineral, of an orange-red color; -- called also red zinc ore, and red oxide of zinc.
from The Century Dictionary and Cyclopedia
- n. See zinkite.
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.