trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali 0
Alexandre brongniart Rene Hauy 0
saka trakhus greek atos 'utawa roughness trakhutēs 0
awet rock, medium atose rock 0
rock grained nggoleki, rock opaque 0