- Potosi Mine, Santa Eulalia, Chihuahua, Mexico
- Cabinet, 10.0 x 7.2 x 4.5 cm
- Ex. Richard Heck
A large cluster of intergrown pyrrhotite crystals, to 2.6 cm across, a few of which are doubly terminated. They exhibit matte luster and a superb bronze patina, which gives them a very interestign color tone. The back side is not complete, but the front is complete and pristine. It looks like it is alive and moving, as the crystals curve around each other.