Ancient lead-zinc mine (abandoned in 1885) working a vein hosted by Lower Carboniferous limestone and coal measure shales. The Bleyberg mine is located 6 km NW of Kelmis and about 20 miles NE of Liege.
Refs.:
- Dewez, L., Lespineux, G., (1949): Les Minerais Du Sol Belge; Centenaire de l`Association des Ingenieurs sortis de l`Ècole de Liege, Section Geologie
- http://www.trois-frontieres.be/D/mine_plomb.php
- Rocks & Min.: 20:467.