psilomelane

名词 n.
中文释义

英文释义

名词 n.
  1. Any hard, black hydrous manganese oxide with variable amounts of barium and potassium. uncountable,usually

词形变化

psilomelanes plural

词源

from Gr. ψιλός (naked, smooth, bald) and μέλας (black)
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