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What are rocks that have a glassy texture called?
Obsidian
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 is the difference between hardness and texture?
Hardness usually is used to describe the difficulty of separating the molecules of a material or substance. The texture is simply how the material or substance feels.
Can a obsidian rock be found in Louisiana?
No, obsidian is also called 'volcanic glass,' since it is a product of cooled lava. Since there are no volcanoes in Louisiana there will not be any natural obsidian.
What is possible origin of obsidian?
Obsidian is volcanic glass, derived from the quick cooling of high silica lava.
What texture does obsidian have?
A glassy texture.
What texture of obsidian?
Obsidian is an extrusive rock that cooled very rapidly without forming crystals. As a result, obsidian has a smooth, shiny texture of a thick piece of glass.
What is the texure of obsidian?
Obsidian is an igneous rock with a glassy texture. Its texture is also called hyaline, the Greek word for texture.
How does obsidian get its unusual texture?
The texture of a rock depends on the rate that it cools. Obsidian cools so quickly that no crystals can form, therefore giving it a glassy texture.
Which characteristic provides the best evidence that obsidian rock formed in an extrusive environment?
The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like texture.
What igneous rock has a smooth glass like texture?
Obsidian is an igneous rock that has a smooth glass-like texture. It is formed when lava cools rapidly without crystal formation, resulting in a glassy texture.
What are rocks that have a glassy texture called?
Obsidian
Is obsidian natural gas?
Obsidian rock is simply cooled liquid magma or "lava". Obsidian rock is jet black with a very smooth texture and glossy appearance.
How much inches high is obsidian?
Obsidian is not identified, classified, or described by height. It is described by its texture, fracture, hardness, and chemical composition.
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.
Why does obsidian have a glassy texture?
Obsidian has a glassy texture because it forms from rapidly cooling lava without much time for crystal growth. This quick cooling process prevents the formation of crystals, resulting in a smooth and reflective surface similar to glass.
What is the texture of the very finest grained rocks called?
vitreous or glassy (obsidian)
