obsidian (n.)youdaoicibaDictYouDict
"dark, hard volcanic rock," 1650s, from Latin obsidianus, misprint of Obsianus (lapis) "(stone) of Obsius," name of a Roman alleged by Pliny to have found this rock in Ethiopia.
phonolite (n.)youdaoicibaDictYouDict
a kind of volcanic rock that rings when struck, c. 1830, literally "sounding stone," from phono- + -lite. Based on German klingstein.
tufa (n.)youdaoicibaDictYouDict
type of porous rock, 1770, from Italian tufa "tufa, porous rock," probably from Latin tufus, tophus "loose, porous volcanic rock," said to be an Oscan-Umbrian loan-word. Related: Tufaceous.
leuciteyoudaoicibaDictYouDict
"A potassium aluminosilicate mineral, crystallizing in the tetrahedral system and typically found as grey or white glassy trapezohedra in volcanic rocks", Late 18th century: from Greek leukos 'white' + -ite1.