STOCKWORK
Etymology
Noun
stockwork (plural stockworks)
(mining) A system of working in ore, etc, when it lies not in strata or veins, but in solid masses, so as to be worked in chambers or stories.
(geology) A metalliferous deposit characterized by the impregnation of the mass of rock with many small veins or nests irregularly grouped, especially common with tin ore.
Source: Wiktionary
Stock"work`, n. Etym: [G. stockwerk.]
1. (Mining)
Definition: A system of working in ore, etc., when it lies not in strata or
veins, but in solid masses, so as to be worked in chambers or
stories.
2. (Geol.)
Definition: A metalliferous deposit characterized by the impregnation of
the mass of rock with many small veins or nests irregularly grouped.
This kind of deposit is especially common with tin ore. Such deposits
are worked in floors or stories.
Source: Webster’s Unabridged Dictionary 1913 Edition