Franckeite

$2,500.00

Free shipping
Seller offers an extended return window of up to 30 days
Ships from USA

T

The ArkenstoneFeatured

3,403 for sale·Member since 2026

A phenomenal large display miniature of sculptural Franckeite from the famous and historic San Jose silver-tin mine located on the Bolivian Altiplano in the eastern Andes. This extraordinary miniature consists of numerous, mounded aggregates of brilliant metallic silver-gray, spherical, radial sprays of Franckeite in a very aesthetic composition, and the specimen is from the noted 2004 find at this mine. It is very characteristic for the shape as if it was frozen worm like growths, with sharp crystals along the tendrils. This is considered the best locality for Franckeite, an exceptionally rare iron-lead-tin-antimony sulfosalt. The individual crystals are slender prismatic and average a few millimeters in length. A superb example of this rare species!

Product details

SpeciesFranckeite

SizeSmall Cabinet

Dimensions5.2 x 3.8 x 3.8 cm

Listed on04/08/2026

LocalityBolivia, Potosí, San Jose Mine

SKUUTR20-10

Comments

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.

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.