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Obsidian is a volcanic glass, so the main component is silica. It is 70-75% SiO2,
plus MgO, Fe3O4.
Mainly from molten granite, carbonated basalt and quartz for shininess.
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∙ 13y ago
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Does an obsidian rock have minerals you can see with magnification?
No, obsidian is volcanic glass.
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
What igneous rock does not have any minerals in it?
Obsidian is an igneous rock that technically is not composed of minerals. It is a natural glass.
What kind of minerals are in the obsidian rock?
!I think there is quarts, but I only think.
Teotihuacan is famous for artifacts made from?
Volcanic rock.
How was the rock obsidian made?
Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
How is obsidian dependent to minerals?
how is obsidian dependent on minerals
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.
How do obsidian rocks get from being minerals to a rock?
Obsidian rocks are formed from minerals underground in places like the earth's core and volcanoes. They require heat and pressure, which squishes the minerals together to form a rock. There is air trapped inside the rock when it is formed, which creates the bubbles, or "holes" inside the rock if you look at one. When I find out more about it, then I will let you know more about it.
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 are the minerals in obsidian?
Obsidian is, itself, a mineral.
