Franckeite - image 1
Franckeite - image 2
specimen video

Franckeite

Unknown Owner
Very well crystallized metallic franckeite with little attached matrix. In very good condition, this is excellent for the species.

Product details

Species
FranckeiteAbout Franckeite →
SizeMiniature
Dimensions5.0 x 3.5 x 2.0 cm
Added on01/07/2025
Locality
Bolivia, Potosí, San Jose MineRegional guide →

Known provenance

DateCollectorAcquisition price
05/2026Unknown Owner$920.00
—Weinrich MineralsNot disclosed

Learn more

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.