1854 3 552 The vein as far as opened is two feet in width, good walls, and the vein matter well filled with stamp work of excellent quality.
1965 G. J. Williams viii. 94/1 The reefs in the slaty shales..owe their gold to downward percolation rather than to the ascension of heated water carrying vein-matter in solution.
1995 54 1 The partial redeposition of ore and vein matter in the overlying rocks as a result of the magmatic, hydrothermal, and tectonic processes.