encaissé dans

CONT: [...] or inclus dans des sulfures [...]
CONT: [...] l'apatite vanadifère contenue dans les conglomérats triasiques situés au-dessus du filon.
CONT: Filons encaissés surtout dans les gneiss et micaschistes [...]

CONT: ... pyrite is the dominant sulphide mineral in deposits hosted by greenschist grade rocks, whereas pyrrhotite dominates in deposits hosted by amphibolite grade rocks.
CONT: The ores are hosted mainly in the Footwall Breccia (considered by some authors to be a facies of the Sublayer).
CONT: The schist-hosted sulphide deposits represent approximately 10 percent of Canada's historical production and reserves ...