Sulfide minerals in the quartz veins are much more varied than in replacement ores; pyrite masses in the former contain up to 2% arsenopyrite and trace to minor amounts of galena, sphalerite, scheelite, pyrrhotite, chalcopyrite, cosalite
Cosalite crystals from Trepca are rare but very beautiful.
1974) Macroscopic cosalite crytals from the Pb-Zn ore deposit Trepca (Yugoslavia).
Other less attractive but interesting species include bismuth minerals (native bismuth, bismuthinite, cosalite
, bismutite), tungsten minerals (scheelite, ferberite) and several borates including ludwigite in large, radiated masses, inderite, szaibelyite and canavesite-a species described in 1978 for which Brosso is the type and, so far, only locality.
Felbertailte is always intimately intergrown with argentian lillianite and, rarely, with cannizzarite, Se-free junoite, Se-free proudite, bismuthinite derivatives and cosalite
The minerals which most commonly form inclusions within the quartz crystals or overgrowths on their faces are chlorite, muscovite (sericitic), rutile, brookite, anatase, calcite, titanite, epidote, ilmenite, pyrite, cosalite, boulangerite and ancylite-(Ce).
Xenotime-(Y) forms brownish yellow, prismatic crystals to 1 mm associated with anatase, ancylite-(Ce), brookite, cosalite, calcite and other minerals.
Alabandite (*)Apatite Argentite (*)Arsenopyrite (*)Barite Bornite Canfieldite Cassiterite Chalcocite/digenite Cosalite
Emplectite Hessite Hocartite (*)Hubnerite Lillianite Native silver Natrolite Polybasite Pyrargyrite (*)Pyrrhotite) Rhodochrosite Rhodonite (*)Scheelite Stannite Stephanite Tungstenite Wittichenite (*)Wurtzite