Formula: Ag5Pb14Sb21S48
Sulphosalt, lillianite homologous series group,
silver-
and antimony- bearing mineral
Crystal System: Monoclinic
Specific gravity: 5.56 measured, 5.224 calculated
Hardness: 2
Streak: Dark grey
Colour: Lead grey to steel grey
Environments:
Fizélyite occurs in hydrothermal veins associated with dolomite,
pyrite, pyrrhotite,
quartz, semseyite and
sphalerite
(Mindat).
Localities
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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