Black Onaping glass is a unique impact glass found in the Onaping Formation within the Sudbury Impact Structure in Ontario, Canada. This extraordinary glass is formed from a combination of surge deposits, suevite, and reworked materials in an aqueous environment.

Unlike other volcanic glass, Onaping glass showcases a range of different chemical compositions and petrographical characteristics. These qualities hint at a fascinating process called shock vitrification, supported by country rock clasts with microscopic shock-induced changes found in this impact glass.

The Sudbury Structure and the Onaping Formation's heterolithic breccias and igneous complex have long been subject of debate. While a meteorite impact origin is widely accepted, the recrystallized Onaping Formation glasses' origins continue to be discussed and studied.

Size of Specimen: 55mm L X 50mm W X 12mm D, Weight: 78.5 grams. This specimen contains prominent shocked garnet clasts embedded in a swirled glass matrix with stretched metal flakes. The macro images are consistent with material found in black onaping glass.

Ships with a Certificate of Authenticity, tag, tag stand and information about Onaping impact glass. Photo cube and plexiglass riser are not included.

This is a rare opportunity to get this very attractive impact glass from the Sudbury Impact Structure for your collection.

Ships with a Certificate of Authenticity, tag, tag stand and information about Onaping impact glass.