Description
This find was made a couple of years back in China (2007), and is absolutely unique: glittery, golden pyrite microcrystals on the edges of large (to 5.0 cm across on this piece) flattened rhombs of lustrous, translucent calcite. Some of the specimens had very sparse coverage of pyrite, just a salting, but here, it is richly carpeting the crystal edges.
Origin