from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A monoclinic-prismatic mineral containing chlorine, lead, oxygen, sodium, and sulfur.
from The Century Dictionary and Cyclopedia
- n. A rare mineral from Caracoles, Chili, consisting of oxychlorid of lead and sulphate of sodium. It occurs in colorless orthorhombic crystals, which are hexagonal in aspect through twinning.