01 n. The valueless nonmetalliferous mineral or rock material which surrounds the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; g…
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The valueless nonmetalliferous mineral or rock material which surrounds the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; gangue; matrix; -- called also veinstuff.(Mining) Also: veinstuff