( n. )
An igneous, crystalline in structure, consisting essentially of a triclinic feldspar and hornblende. It includes part of what was called greenstone.
( n. )
An igneous, crystalline in structure, consisting essentially of a triclinic feldspar and hornblende. It includes part of what was called greenstone.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012