Franckeite (rare matrix specimen) Sphalerite the small amount of damage

the small amount of damage is forgivable

The piece is twinned and shows the classic "cogwheel" shape that was made famous by the classic specimens from Cornwall

Several very sharp

The TOP “porcelain”-esque luster combined with the larger

Although the Sweet Home mine is most famous for its Rhodochrosite specimens

Franckeite (rare matrix specimen) Sphalerite the small amount of damageThis specimen was mined in the late 1970s early 1980s. I think it goes without saying that the finest specimens of Franckeite are found at this mine. This is one of my favorite species from Bolivia, as it has an interesting chemistry, unique crystals, and it belongs to the only group of minerals that form naturally round or cylindrical crystals! Keep in mind that this is one of the rarest sulfosalts in the world, and good display specimens of this