Pyroaurite - Sold
- Sterling Hill
- Sussex County
- New Jersey
- 6.0 by 3.9 by 2.0 cm – Miniature specimen (fits into a 5 cm cube)
Igelström (1866) first described this species using material found in Sweden. The name denotes the golden color produced on heating of the species. Dunn (1995) describes the mineral from Sterling Hill. This specimen shows thick tabular to short prismatic crystals of pyroaurite to 1 mm crystallized with hetaerolite on a fracture surface. The crystals on this piece appear to be intergrowths of two polytypes, pyroaurite sensu stricto, and the polytype formerly known as sjögrenite. Dunn (1995) described these intergrowths.
This specimen comes from the Bob Trimingham collection, a collector from Livermore, California. His detailed collection card indicates purchase from Mineralogical Research Company (Sharon Cisneros) in 1981.