Definition of "quartz-vein" []

• A deposit of quartz in the form of a vein. (noun)

The Century Dictionary (Public Domain)

• "The Wady Mulaybij shows fine specimens of mica dorí in the quartz-vein streaking the slate: it deceived all the caravan, save those who tested it with their daggers."
• "At foot of Abú Sháar Pass, aneroid 28.80; at foot of quartz-vein (wall), 28.50."
• "The filets and fibrils of dust are exposed to sight in the flanks, and near the base of the great quartz-vein: we should never have been able to remove the barren upper capping."