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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.
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∙ 11y ago
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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.
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.
What is an example of extrusive rock that has cooled too quickly for grains to form?
Obsidian, which is volcanic glass, is a good example.
Is the obsidian trilogy good?
oh it rocks! You have to read it
Where does obsidian come from?
Obsidian is molten silica (read sand) which has cooled rapidly after a volcanic eruption into brittle glass and is the reason why it chips easily into blades. Iron and magnesium give obsidian its dark color.
What is a glassy rock?
Obsidian is a naturally occurring volcanic form of glass.
A black rock formed from cooled lava?
Obsidian
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.
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.
What is a type of obsidian?
Mahogany Obsidian
