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Pyrite forms when iron and sulfur combine under high heat and pressure
due to its toxicity
5cm Approximate Weight for 1 piece: 14g
Era: Cenozoic & MesozoicGeological Age: 45-70 mya
Black Obsidian Cobble - Spalled Face Solo/Pair:Solo (1 pc) Pyrite forms when iron andMined from: Burns, Lake County, Oregon, U. S. A. Description: Black obsidian from the Burns area of Oregon is a natural volcanic glass with a clean, dark body color and a bright vitreous luster. A spalled face shows the fresh interior where the stone has broken with the curved, shell like fracture obsidian is known for, giving it sharp edges and a raw, glassy surface. It has a stark, clean look that makes it popular for display, flintknapping, and