from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A monoclinic-prismatic mineral containing arsenic, calcium, lead, magnesium, manganese, oxygen, phosphorus, and sodium.
from The Century Dictionary and Cyclopedia
- n. An arseniate of lead, manganese, and calcium, occurring massive, of a brown color, at the lead-mines of Långban, Sweden.
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