Dims: 4.0" x 3.9" x 0.2" (10.2 x 9.9 x 0.5 cm)
Wt: 4.43 oz. (125.7 g)
Sparta, Illinois, U.S.A.
This lovely specimen is what one expects from its locality- it is a Pyrite "dollar", or "sun", a usually round, flat concretion that is found in layers of shale between coal seams. Sparta, in the northern U.S. state of Illinois, is the only locality where these concretions are found in any abundance- most of the world's supply consists of what coal miners can carry to the surface. This particular specimen is not shaped like a complete circle. Each face of the "sun" has striations that radiate 360-degrees from a central point where the sun first started to form. It has the pale golden color and metallic luster of Pyrite and is in excellent condition, showing no human-induced damage. I consider the Pyrite sun to be an essential part of any serious collection.