- Suredaite (type locality) with Wurtzite, Sphalerite, Pyrite, and Coiraite (?)
- Oploca vein system, Pirquitas Ag-Sn deposit, Rinconada Department, Jujuy, Argentina
- Small Cabinet, 6.5 x 4.5 x 2.5 cm
- Ex. Dr. Werner Paar
Dark gray, metallic, divergent, lamellar aggregates of suredaite occupying a 3-4mm nearly solid band associated with bands of wurtzite and sphalerite. Coiraite as noted on the Matioli label could not be confirmed and is likely not present. University of Salzburg label, from the collection of Dr. Werner Paar, world expert on this species.