Sphalerite with Dolomite, Galena
Huaron Mines, Huaron Mining District, San jose de Huayllay District
5.9 x 5.5 x 3.2 CM (cabinet)
pre Tucson 2015 update
Dark orange Sphalerite in well-formed crystals perched on a contrasting Dolomite in an esthetic arrangement. This comes from a small find in the late 70's at Huaron that was unique. The crystals are translucent and glow with backlighting, but in normal light this still displays very well as seen here. A good example of this old find that is very rare on the market.
Gratonite (rare Lead-As Sufosalt)
Excelsior Mine, Cerro de Pasco, Pasco Province
5.4 x 3.2 x 2 CM (small cabinet/large miniature)
Gratonite, when available, is usually in thumbnail sized pieces. This is a more sizable piece and well-crystallized. The best were found over 50 years ago and Pasco is the only source for fine specimens. Branching crystal aggregates to 2.5 CM cover most of a sulfide matrix, composed of 3-5 mm sized individuals. The Gratonite has the dull to slightly lustrous lead-silver color that is classic for these.