( n. )
The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.
( n. )
The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012