Also -werk. Mining. [repr. G. stockwerk. See STOCK sb.1 55 c.] A deposit (esp. of tin) in which the ore is distributed through a large mass of rock.
1839. Ure, Dict. Arts, 1241. The Cornish ores occur … 2. in stockwerks, or congeries of small veins.
1845. Encycl. Metrop., VI. 771/2. The stock work of the German miners is to be considered as a mass of rock impregnated with metallic matters, in numerous small veins, which come together irregularly, so as to make particular parts extremely rich.
1881. Raymond, Mining Gloss., Stockwork (Germ., Stockwerk). An ore-deposit of such a form that it is worked in floors or stories. It may be a solid mass of ore, or a rock-mass so interpenetrated by small veins of ore that the whole must be mined together.
