Franckeite from San Jose Mine, Cerro Chorolque, Potosí, Bolivia - image 1
Franckeite from San Jose Mine, Cerro Chorolque, Potosí, Bolivia - image 2

Franckeite from San Jose Mine, Cerro Chorolque, Potosí, Bolivia

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Very well crystallized franckeite across the top of matrix. In good condition and nice for the species.

Product details

SpeciesFranckeite
SizeSmall Cabinet
Dimensions8.0 x 4.8 x 1.8 cm
Added on10/27/2025
LocalityBolivia, Potosí, San Jose Mine
Current owner
Unknown Owner
Acquired
Apr 2026
Price paid
$275.00
Previous owners
DateCollectorAcquisition price
—Weinrich MineralsNot disclosed

Learn more

Franckeite
Mineral guide
Learn about Franckeite
, a rare micaceous lead-tin-antimony sulfosalt, forms layered rosettes and curved plates; Bolivian origin and texture make it collectible.
Franckeite
Regional guide
Franckeite from San José Mine, Bolivia
from the San José Mine is one of the classic Bolivian sulfosalt specimens: black to steel-gray, metallic, soft, heavy, and often built from curving blades and radiating rosettes rather than simple textbook crystals. The best pieces have a lively sheen that moves across the bent plates as the specimen is turned, giving an otherwise dark mineral a surprisingly sculptural presence. Collectors prize San José franckeite because it shows the species in displayable form—not merely as a massive ore constituent, but as rosettes, foliated aggregates, compact sprays, and curved, bladed crystals that express the mineral’s layered structure in the hand.
Locality guide
San Jose Mine
A collector's guide to San Jose Mine, Bolivia: its geology, mining history and notable minerals, illustrated with the 230 specimens documented from this locality on EarthWonders.