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how is obsidian dependent on minerals
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Is pumice and obsidian exaples of minerals?
No. Pumice and obsidian are rocks composed mostly of glass.
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 minerals are obsidian made up of?
There are no minerals in obsidian. Obsidian is a silica-rich volcanic glass, which cools too quickly to produce crystals. A mineral must have an ordered atomic structure and a distinct chemical composition. The size of a crystal depends on cooling rate of the magma: slower cooling correlates to larger crystal size. If a magma cools too quickly, the elements don't have time to organize themselves into crystals, and will "freeze" in place as a glass. Obsidian often has a chemical composition similar to a granite, meaning that the ratios of different elements and oxides would be the same. The major difference between these two rocks is cooling rate--granite cools slowly, deep underground, while obsidian cools quickly on the surface.
Where do you find Obsidian rock Philippines bacoor zapote cavite?
email me: vintagearchaeologyph @ yahoo . com Loads of rocks and minerals collections. Thanks
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
What are the minerals in obsidian?
Obsidian is, itself, a mineral.
What minerals does obsidian have?
none
Does an obsidian rock have minerals you can see with magnification?
No, obsidian is volcanic glass.
What does obsidian mean in rocks and minerals?
Obsidian is black glass formed by volcanoes.
Is pumice and obsidian exaples of minerals?
No. Pumice and obsidian are rocks composed mostly of glass.
Does obsidian have any minerals present?
No, it is a colloidal glass.
What minerals make up a obsidian?
salt, silca, and grain
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 igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
Why is the texture of obsidian is best contain few or no minerals grains?
Obsidian cools so quickly the mineral grains do not have time to form.
What kind of minerals are in the obsidian rock?
!I think there is quarts, but I only think.
What are the names of all the minerals in the world?
It's not really possible to answer that, as there are so many. It is also dependent on your definition of mineral. Some are quartz, feldspar, and horneblende.
