from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless, vitreous to resinous, often fluorescent mineral, Zn2SiO4, a minor ore of zinc.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A rare mineral, zinc silicate, Zn2SiO4, that is a minor ore of zinc.
from the GNU version of the Collaborative International Dictionary of English
- n. A silicate of zinc, usually occurring massive and of a greenish yellow color, also in reddish crystals (troostite) containing manganese.
from The Century Dictionary and Cyclopedia
- n. A mineral of resinous luster and yellowish-green or flesh-red color, a native silicate of zinc.
Fellowship at Princeton University for postdoctoral work, at which time he began a study of photoconductivity in willemite crystals.
Sphalerite or blende (zinc sulfide), the original zinc ore, smithsonite, hydrozincite, willemite.
Zincite (zinc oxide) and willemite (zinc silicate) are the important minerals in the deposits of Franklin Furnace, New Jersey.
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.
Why, only those rays invisible to the human eye, but which make this piece of willemite glow -- the ultraviolet rays. "
Why, only those rays invisible to the human eye, but which make this piece of willemite glow -- the ultra-violet rays. "