(n.) Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.
BIOTITE
Meaning of BIOTITE in English
Webster's English dictionary. Английский словарь Webster. 2012
(n.) Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.
Webster's English dictionary. Английский словарь Webster. 2012