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Does an obsidian rock have minerals you can see with magnification?
No, obsidian is volcanic glass.
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 or rock is obsidian?
It is an igneous rock
What kind of igneous rock does not have fossils?
obsidian
How is obsidian dependent to minerals?
how is obsidian dependent on minerals
What kind of rock is clear and shiny?
The rocks amber and obsidian can be clear in polished thin specimens. Many minerals are shiny and clear in pure crystalline form.
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
What kind of rock is formed when melted minerals cool and harden?
Igneous rock is formed when melted minerals cool and harden. This process can happen either beneath the Earth's surface (intrusive igneous rock) or on the surface (extrusive igneous rock). Examples of igneous rocks include granite, basalt, and obsidian.
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.
What are the minerals in obsidian?
Obsidian is, itself, a mineral.
What specific type of rock can NOT be formed from minerals?
There are a couple examples. Coal is a rock, but it is organic and so does not contain minerals. Obsidian and pumice are both varieties of volcanic glass. Since they lack a crystal structure, they are not composed of minerals
What kind of igneous rock is obsidian?
Obsidian is an igneous rock. However it differs from other rocks because it contains no minerals. It consists of natural glass, which is not a mineral because it has no crystal structure.Answers from McDougal Littell, Earth Science book
