0
hydrogenated
Anonymous
Add your answer:
Earn +20 pts
Does obsidian rock contain few or no mineral grains?
That is correct.
Why is the texture of obsidian is best contain few or no minerals grains?
Obsidian cools so quickly the mineral grains do not have time to form.
Is pumice and obsidian forms of volcanic gas?
Partially correct. Pumice forms from rapidly cooling lava containing volatiles (water and gas) and obsidian forms from rapidly cooling lava that doesn't contain volatiles. Bubbles from volatiles are frozen in place and cannot escape before the lava hardens forming pumice. Obsidian and pumice are sometimes found together although obsidian itself is relatively rare.
Why does obsidian rock contain no crystals?
obsidian doesnt crystalize because it was formed under water.
Why does obsidian contain few or no grains?
The material that would normally form mineral crystals does not have time to form a crystalline structure because of very rapid cooling after volcanically erupting into the air or onto the surface. Obsidian is a volcanic glass.
What is a glassy rock?
Obsidian is a naturally occurring volcanic form of glass.
A black rock formed from cooled lava?
Obsidian
Why does obsidian contain few or no mineral grains?
The material that would normally form mineral crystals does not have time to form a crystalline structure because of very rapid cooling after volcanically erupting into the air or onto the surface. Obsidian is a volcanic glass.
Is obsidian malleable?
No. Obsidian is brittle.
What is a type of obsidian?
Mahogany Obsidian
Is obsidian a diamond?
No. Obsidian is natural glass, mostly silica. Obsidian is of volcanic origin.
What are the minerals in obsidian?
Obsidian is, itself, a mineral.
