Pyrite Sun from Sparta Illinois 3874

Pyrite Sun from Sparta ,Illinois. One of the most unusual and striking varieties of pyrite are the disc-shaped pyrite "suns", also known as pyrite dollars, which exhibit striations radiating out from the center like rays of the sun. These unique specimens are recovered from underground coal mines near Sparta, Randolph County, Illinois USA, where they occur in narrow, compacted seams of slate interbedded in 300 million-year-old Pennsylvanian Period coal deposits. Weighs:1.4 oz(43 grams) Diameter:2"(5cm)