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Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
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∙ 13y ago
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How is obsidian glass made?
Obsidian, or "volcanic glass," is made when molten rock comes out of a volcano and cools so quickly that no crystalline structure has time to form. This makes obsidian an extrusive igneous rock. The cooling occurs right at the surface.
What do a coal rock and a obsidian rock have in common?
nothing
How is obsidian and coal rock alike?
Obsidian and coal are both rocks and they are formed by lava
How do you tell the difference between Obsidian rock and Coal Flint rock?
flint has an extremely bright shine
What is the difference between obsidian and coal?
Obsidian has a higher luster(shinier) than coal, coal is organic, and coal is sedimentary and obsidian is igneous
Teotihuacan is famous for artifacts made from?
Volcanic rock.
Is obsidian man made?
Obsidian is an igneous rock. Rocks are not man-made. Man-made substances that are similar to rock include concrete and cement.
From which rock is Golconda Fort made?
obsidian
What is the parent rock of obsidian?
the parent rock of obsidian is magma, because it is made from quickly-cooling magma after a volcanic eruption.
What rock is a obsidian and basalt?
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
What is a rock made from the cooling of magma?
Igneoous rock is made from cooling of magma. Obsidian is a classic example of igneous rock.
What is a glassy rock?
Obsidian is a naturally occurring volcanic form of glass.
How is obsidian glass made?
Obsidian, or "volcanic glass," is made when molten rock comes out of a volcano and cools so quickly that no crystalline structure has time to form. This makes obsidian an extrusive igneous rock. The cooling occurs right at the surface.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
Is obsidian rock or gemstone?
Obsidian is an extrusive igneous rock. Volcanic in origin, it is very common in recent lava flows. Obsidian is primarily made of glass. Obsidian is amorphous, lacking any crystal structure found in gemstones. For more details, try asking the question - "What is obsidian"
What does rock group does obsidian belong to?
Obsidian is in the Igneous rock group.
How does obsidian rock get its different colors?
how can a blue obsidian rock be blue
