This is Obsidian, a naturally occurring volcanic glass It forms when lava, rich in silica, cools rapidly on contact with air or water.

This is Obsidian, a naturally occurring volcanic glass It forms when lava, rich in silica, cools rapidly on contact with air or water. | Funny Pictures, Quotes, Pics, Photos, Images. Videos of Really Very Cute animals.

August

, Saturday | Add Comment

[ Back to top ]

Already a member? Sign In Here

User and Pass do not match

Not allowed to comment on this site

Back

This is Obsidian, a naturally occurring volcanic glass It forms when lava, rich in silica, cools rapidly on contact with air or water.

Popular posts

Funny Sites