zincite

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A red to yellow-orange zinc ore, ZnO.

Century Dictionary and Cyclopedia

1. n. See zinkite.

Wiktionary

1. n. 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.

GNU Webster's 1913

1. n. (Min.) Native zinc oxide; a brittle, translucent mineral, of an orange-red color; -- called also red zinc ore, and red oxide of zinc.