( n. )
A mineral occuring in octahedral crystals, also massive, of a reddish color. It is a silicate of iron, zinc manganese, and glucinum, containing sulphur.
( n. )
A mineral occuring in octahedral crystals, also massive, of a reddish color. It is a silicate of iron, zinc manganese, and glucinum, containing sulphur.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012