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Formula: Pb3Sb8S15
Sulphosalt, plagionite group, forms series with
heteromorphite,
plagionite and
semseyite.
Specific gravity: 5.23
Hardness: 2½
Streak: Reddish grey
Colour: lead grey, tarnishing to steel blue or bronzy
Environments:
Fülöppite is a rare mineral of hydrothermal origin,
(Webmin, HOM)
associated with zinkenite, semseyite,
fizélyite, andorite,
freieslebenite, geocronite,
boulangerite, jamesonite,
cinnabar, sphalerite,
marcasite, quartz and
dolomite
(HOM).
Localities
At Baia Mare, Maramures, Roumania, fülöppite has been found with
sphalerite,
quartz, dolomite,
sulphur and zinkenite
(AM 15.201-202).
Fülöppite from Baia Mare - Image
At Wet Swine Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK, the quartz-antimony vein contains an early
antimony - iron -
arsenic
primary assemblage comprising
stibnite, berthierite and
arsenopyrite, and a later
antimony-lead assemblage including
zinkenite, fülöppite and
semseyite, in massive white quartz
(JRS 7.1:36).
Fülöppite from Wet Swine Gill - Image
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