- Stannite, Jamesonite
- Miniature, 4.6 x 3.8 x 2.8 cm
- San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
This specimen features several sharp, twinned crystals of Stannite sitting atop and mixed with a matrix of acicular Jamesonite crystals and are associated with minor gemmy brown Cassiterite crystals. Stannite is copper iron tin sulfide.