veinstuff

English

Etymology

vein +‎ stuff

Noun

veinstuff (countable and uncountable, plural veinstuffs)

1. (mining) Minerals found in a vein, of lesser value than ores.
   • 1900, Lyman Child Wooster, The Geological Story of Kansas, page 59:

     The less valuable minerals are called veinstuffs, and the more valuable are termed vein ores. The more common veinstuffs are calcite, quartz, heavy spar, and fluorspar.