Formula: Ag5Pb14Sb21S48
Sulphosalt, lillianite group
Specific gravity: 5.56
Hardness: 2
Streak: Dark grey
Colour: Lead grey to steel grey

Hydrothermal environments

Fizélyite occurs in hydrothermal veins associated with dolomite, pyrite, pyrrhotite, quartz, semseyite and sphalerite (Mindat).


At the Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada, fizélyite to 4 mm has been found, sometimes covered by 0.1 mm freieslebenite crystals, and sometimes growing on miargyrite or diaphorite crystals. One specimen shows fizélyite overgrowing semseyite, and in another part of the vug semseyite occurs on fizélyite, indicating co-deposition. The presence of boulangerite with silver minerals is often an indicator of nearby fizélyite (Minrec 31.3.226-227).

At the type locality, the Herja Mine, Chiuzbaia, Baia Mare, Maramureș, Romania, fizélyite occurs in hydrothermal veins associated with semseyite, galena, sphalerite, pyrite, pyrrhotite, quartz and dolomite (HOM).

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