Black Onaping Impact Glass Sudbury Canada

Black Onaping Glass: A Unique Impact Glass from Sudbury

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

Distinctive Characteristics of Black Onaping Glass

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.

Geological Significance

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

Specimen Details

Size of Specimen: 59mm L X 52mm W X 10mm D. Weight: 61.4 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. No cracks or repairs. The apparent lines at 50X magnification are metal-filled.

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

Rare Opportunity

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