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This is taken from the Wikipedia article:
"Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock."
Igneous means that the material obsidian is made of is molten initially. Extrusive means that the material pours or explodes out of volcanoes, as opposed to remaining under the earth's surface. See links for more.
What else can I help you with?
What do an obsidian rock look like?
Obsidian is a beautiful rock. It's description is pretty simple, it is a rock that formed out of cooled lava, and is black in color.
Will someone start a server on Terraria and give me an Obsidian Skull?
Anyone can give anything on a server and you would get to keep it, just begging people for it is hard, but the obsidian skull is not hard to make. Only 30 obsidian.
Give you description about the skill good communication skill?
It starts with grammar.
What are the red spots on obsidian?
The red spots on obsidian are often caused by the presence of iron oxide or hematite inclusions. These inclusions can give the obsidian a reddish tint or speckled appearance.
Can obsidian be bouncy?
I doubt it. Obsidian is a very hard, glass-like black rock that can be split to give a very sharp cutting edge.
Is the obsidian trilogy good?
oh it rocks! You have to read it
A glassy fine grained extrusive rock?
This description likely fits obsidian, a natural glass formed from rapidly cooling lava. Obsidian is characterized by its fine-grained texture and shiny, smooth surface. It is commonly black, but can also be found in other colors like brown, red, or green.
Have a Smith an Wesson with serial4D82786 what is it worth?
No way to give a good answer without a DETAILED description of ALL markings.
What do you think is wrong with my car?
Give us the make, model, year and a good description of the symptoms and we will try to help.
Which best explains the glassy look of obsidian?
The fact that obsidian IS glass. It is a naturally occurring form of volcanic glass. Different impurities give it different colors, usually black or shades of gray.
Is obsidian malleable?
No. Obsidian is brittle.
What is a type of obsidian?
One type of obsidian is snowflake obsidian, which is black with white mineral inclusions that resemble snowflakes.
