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Formula: CaPb(Al2Mn3+)[Si2O7]{SiO4]O(OH)
Sorosilicate (Si2O7 groups), epidote group
Crystal System: Monoclinic
Specific gravity: 4.282 calculated
Hardness: 6
Streak: Pink
Colour: Purplish red
Environments
Piemontite-(Pb) is a relatively new mineral, approved in 2011, and to date (May 2022) reported only from the type
locality.
Localities
At the type locality, the Mixed Series formation, Babuna Valley, Jakupica Mountains, Nežilovo, Veles Municipality, North
Macedonia, piemontite-(Pb) occurs as imperfect blocky crystals to 2mm in the “Mixed Series” of metamorphic and igneous
rocks, in dolomitic marble and
baryte schist. Associated minerals
include baryte, dolomite,
calcite, hematite,
cymrite, zinc- and
manganese- bearing phlogopite,
intermediate members of the
hancockite–epidote–piemontite
series, hedyphane, nežilovite,
rinmanite, gahnite,
tilasite, rutile,
zinc-rich
aegirine-augite,
eckermannite-ferro-glaucophane,
senaite, roméite,
arsenic-rich fluorapatite,
bindheimite, mimetite,
chromite and braunite
(HOM, Mindat).
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