Dark brown colored has replaced octahedral Pyrite crystals. The shape of the crystals is well preserved. Some of the smaller crystals are hollow. The specimen may be from the Reward mine which is near Salinas valley and a source for similar pseudomorphs.
Condition: Excellent
Flaws: Nothing Appreciable
This mineral is also found in the following galleries: Minerals From California and Nevada | Oxides and Hydroxides | Pseudomorphs | Minerals Priced Between 50 and 99 Dollars