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Where is Obsidian?
Obsidian is a naturally occurring glass formed as an extrusive igneous rock
Naturally occurring igneous rock correctly called obsidian?
Obsidian is a naturally occurring igneous rock. It is a volcanic glass that forms when molten lava cools rapidly without crystal growth, resulting in a smooth and shiny texture.
What is a smooth glassy black igneous rock?
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
Can you give a good description of obsidian?
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.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
A smooth glassy black igneos rock?
The igneous rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed from the rapid cooling of molten lava. Its smooth, glassy texture and black color make it a popular material for decorative items and tools.
Is obsidian an igneous rock?
Obsidian is an igneous rock.So the answer is YES.
What type of igneous rock is this dark volcanic rock shiny like glass with sharp edges?
The dark volcanic rock you are describing is likely obsidian. Obsidian is a naturally occurring glass formed from rapidly cooled lava, which gives it a shiny appearance and sharp edges. Its lack of crystalline structure is what differentiates it from other igneous rocks, and it is often used for cutting tools and decorative items.
Dark igneous rock formed from lava?
obsidian obsidian
What group does obsidian belong to?
Obsidian is in the Igneous rock group.
What is the obsidian rock type?
Obsidian is an extrusive felsic igneous rock.
Name 4 kinds of igneous rocks?
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
