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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.
What is the rock obsidian luster?
Obsidian has a glassy luster, which means it has a shiny and reflective surface similar to glass. This luster is a result of the rapid cooling of lava, which prevents the formation of crystals in the rock.
What is the common name for obsidian rock?
The common name for obsidian rock is volcanic glass.
What characteristic provides the best evidence that obsidian rock formed in an extructive environment?
The characteristic that provides the best evidence that obsidian rock formed in an extrusive environment is its glassy texture. This texture indicates rapid cooling of molten lava, preventing the formation of large crystals. Additionally, the presence of gas bubbles or vesicles can further suggest that the lava cooled quickly upon exposure to the surface environment.
Which rock is igneous and is black?
obsidian 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.
What is the rock obsidian luster?
Obsidian has a glassy luster, which means it has a shiny and reflective surface similar to glass. This luster is a result of the rapid cooling of lava, which prevents the formation of crystals in the rock.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
What does rock group does obsidian belong to?
Obsidian is in the Igneous rock group.
Is obsidian extrusive rock?
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
Is obsidian an instrusive or extrusive igneous rock how do you know?
Obsidian is an extrusive rock and is formed from rapidly cooling magma. Obsidian is also known as volcanic glass and one can find only sub-microscopic crystals in it. This is because it was cooled too fastly for large crystals to form. If the material that obsidian consists of were an intrusive rock and had a lot of time to cool down, one would find that it would be composed of easily visible crystals.
Is obsidian a metamorphic rock?
Obsidian is an igneous rock.So the answer is YES.
Teotihuacan is famous for artifacts made from?
Volcanic rock.
Is volcanic rock obsidian?
No. Obsidian is just one of many types of volcanic rock.
What is the obsidian rock type?
Obsidian is an extrusive felsic igneous rock.
What is the common name for obsidian rock?
The common name for obsidian rock is volcanic glass.
Dark igneous rock formed from lava?
obsidian obsidian
