Re: I also thought of Tektites...
Obsidian is volcanic in origin, but Tektites are the result of meteor impacts. They 'look' very much alike.
Tektites. Tektites found on Earth have a very low Fe and water content.
Space/Science » in reply to Wow! Nice links!
Obsidian is volcanic in origin, but Tektites are the result of meteor impacts. They 'look' very much alike.
Tektites. Tektites found on Earth have a very low Fe and water content.