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Obsidian is an igneous rock. Rocks are not man-made. Man-made substances that are similar to rock include concrete and cement.
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What rock is a obsidian and basalt?
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
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 are the use of obsidian?
The properties of obsidian made it a valuable commodity for stone age tool makers, as a blade could be fashioned with a sharpness finer than that of any steel, down to nearly molecular thinness. Professional obsidian knappers can make surgical obsidian knives which can leave a smaller scar than steel knives. Another use of obsidian is as a stone in jewelry. Obsidian is a glasslike volcanic rock that ancient people made arrowheads and spear points from. Some of these are wonderful works of craftsmanship. It has been used to craft tools, historically. Obsidian has also been used to make jewelry.
Is obsidian made of silica?
Not entirely, though it is rather rich in silica.
A black rock formed from cooled lava?
Obsidian
How is obsidian made?
is made of lava
Teotihuacan is famous for artifacts made from?
Volcanic rock.
What crystals are made by volcanoes?
obsidian
How was the rock obsidian made?
Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
What rock is a obsidian and basalt?
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
From which rock is Golconda Fort made?
obsidian
Can diamond break obsidian?
Diamond is the hardest substance known to man, so it can break most materials. Obsidian is a type of volcanic glass that is very sharp and brittle. Diamond can break obsidian.
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 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 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 was the Aztec sacrifcal knife made out of?
Obsidian stone
What stone was the Aztec sacrificial knife made of?
Obsidian
