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Volcanic glass is material produced by a volcano that lacks any sort of crystalline structure. While most rocks contain crystals in some form of another, glass does not. Volcanic glass usually forms when molten rock cools too quickly to form a crystalline structure. Examples of volcanic glass include obsidian, ash, pumice, and scoria.
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Is volcanic glass an intrusive or extrusive igneous rock?
Volcanic material is extrusive.
How is volcanic glass different from a mineral?
Volcanic glass does not technically contain mineral crystals. The definition of a mineral requires a crystalline structure. Secondly, the chemical composition of volcanic glass could vary widely. Minerals have definite parameters for chemical composition.
Is volcanic glass a mineral group?
No. By definition, a mineral must have a crystalline structure. Glass does not have a crystalline structure.
What rock is actually glass and has sharp edges?
Obsidian is a natural volcanic glass with potentially sharp fracture edges.
What is a smooth glassy black igneous rock?
Volcanic glass or obsidian.
What is sometimes known as volcanic glass?
Obsidian is a glass of volcanic origin.
Are the atoms in volcanic glass organized or disorganized?
The atoms in volcanic glass are highly disorganized.
What type of rock is volcanic glass?
Siliceous volcanic glass is also known as obsidian.
What type of rock is siliceous volcanic glass?
Siliceous volcanic glass is also known as obsidian.
What is true about volcanic glass?
Volcanic glass is the amorphous (uncrystallized) product of rapidly cooling magma.
Is volcanic glass a mineral?
Volcanic glass is not a mineral. It's composition is complex, and their is no crystalline structure.
Is volcanic glass full of air spaces?
Not necessarily. Scoria and pumice are forms of volcanic glass that contain air spaces, while obsidian, another volcanic glass, contains minimal air spaces if any.
Is volcanic glass a Granite?
No. Granite cools from magma deep underground. Volcanic glass cools quickly at or near the surface.
What is the common name for obsidian rock?
Volcanic glass, or pumice (vesicular obsidian).
How much is volcanic glass?
Volcanic Glass Is Worth 6 Dollars US Per Ounce. So Just Weigh And Calculate.
What is the name of the dense volcanic glass that is typically black in color?
The name of the dense volcanic glass that is typically black in color is obsidian.
Is volcanic glass an intrusive or extrusive igneous rock?
Volcanic material is extrusive.
