Marcasite from Francon quarry, Québec, Canada - image 1
Marcasite from Francon quarry, Québec, Canada - image 2

Marcasite from Francon quarry, Québec, Canada

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Large crystals of weloganite spanning both sides of an open pocket. This has been repaired. The crystals are quite large for the species.

Product details

SpeciesMarcasiteWeloganite
SizeSmall Cabinet
Dimensions8.5 x 8.0 x 3.5 cm
Added on01/11/2026
LocalityCanada, Québec, Francon quarry
Current owner
Unknown Owner
Acquired
Feb 2026
Price paid
$50.00
Previous owners
DateCollectorAcquisition price
—Weinrich MineralsNot disclosed

Learn more

Marcasite
Mineral guide
Learn about Marcasite
orthorhombic dimorph of pyrite with cockscomb blade clusters, metallic luster and iridescent tarnish; prized for sculptural form yet requires caref…
Marcasite
Regional guide
Marcasite from Francon quarry
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Locality guide
Francon quarry
Francon quarry, Canada — benchmark locality for weloganite, with pale straw-yellow to amber prisms in vugs, prized for rarity and its Canadian mineral history.