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What is the common name for obsidian rock?
The common name for obsidian rock is volcanic glass.
Is pumice and obsidian exaples of minerals?
Pumice is not a mineral; it is a type of volcanic rock with a frothy texture. Obsidian, on the other hand, is a naturally occurring volcanic glass and is considered a mineraloid rather than a true mineral because it lacks a crystalline structure.
Is Obsidian known as volcanic glass?
Yes, Obsidian is known as volcanic glass. It is a natural glass formed from rapidly cooled lava, typically from volcanoes. Obsidian has a shiny appearance and is commonly used in jewelry and tools due to its sharp edges when fractured.
Lava flows and volcanic ash are examples of magma that has reached the earth's surface true or false?
True. Lava flows and volcanic ash are indeed examples of magma that has reached the earth's surface during a volcanic eruption.
How much is a pound of volcanic glass worth?
The value of volcanic glass, such as obsidian, can vary based on factors such as quality, size, and demand. On average, a pound of volcanic glass may range from a few dollars to around $10-$20. Rare or unique specimens could potentially be worth more to collectors or for specialized uses.
What minerals make up volcanic glass?
No minerals make up true volcanic glass, as the crystalline structure of minerals did not have time to form before the lava hardened. A mineral must have a crystalline structure.
What is sometimes known as volcanic glass?
Obsidian is a glass of volcanic origin.
What type of rock is volcanic glass?
Siliceous volcanic glass is also known as obsidian.
Are the atoms in volcanic glass organized or disorganized?
The atoms in volcanic glass are highly disorganized.
Is volcanic glass a mineral?
Volcanic glass is not a mineral. It's composition is complex, and their is no crystalline structure.
What is the common name for obsidian rock?
The common name for obsidian rock is volcanic glass.
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 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 pumice and obsidian exaples of minerals?
Pumice is not a mineral; it is a type of volcanic rock with a frothy texture. Obsidian, on the other hand, is a naturally occurring volcanic glass and is considered a mineraloid rather than a true mineral because it lacks a crystalline structure.
Is volcanic glass an intrusive or extrusive igneous rock?
Volcanic glass is an extrusive igneous rock. It forms when molten lava cools quickly on the Earth's surface, preventing the formation of crystals.
What is a mixture of volcanic glass and organic matter?
A rock.
