0
What else can I help you with?
Is volcanic glass a mineral group?
No, volcanic glass is not a mineral group. It is a type of igneous rock formed from the rapid cooling of lava without the time for crystallization to occur, resulting in an amorphous (non-crystalline) structure.
What is scratching a mineral against a glass plate and rubbing a mineral on a streak plate helpful procedure for determining in a mineral?
Scratching a mineral against a glass plate helps determine the mineral's hardness based on the scratches produced. Rubbing a mineral on a streak plate helps identify the color of the mineral's streak, which can be different from its outer color due to impurities or weathering. These procedures are commonly used in mineral identification.
What is the igneous rock that cooled too quickly for a crystal structure to form?
Volcanic glass or obsidian is a quickly cooled igneous rock without a mineral crystal structure.
What crystal shape does obsidian have?
Quartz belongs to the hexagonal crystal system.
Is all rocks made of minerals?
No, not all rocks are made of minerals. Rocks can be composed of minerals, but there are also rocks that are formed from non-mineral materials such as volcanic glass or organic matter.
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 a mineral group?
No, volcanic glass is not a mineral group. It is a type of igneous rock formed from the rapid cooling of lava without the time for crystallization to occur, resulting in an amorphous (non-crystalline) structure.
What is the hardness of a volcanic rock?
Volcanic rocks can vary in hardness depending on their mineral composition. On the Mohs scale of mineral hardness, most volcanic rocks fall between 5 to 7, with basalt being around 6 and rhyolite around 7.
Extremely rapid cooling lavA in which no crystals form?
the reterded mineral
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.
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.
What mineral can scratch glass has a nonmetallic luster has fracture and is a dark color?
The mineral that fits these descriptions is obsidian. Obsidian is a natural volcanic glass that can scratch glass, has a nonmetallic luster, typically exhibits conchoidal fracture, and is usually a dark color, such as black, dark green, or dark brown.
What is sometimes known as volcanic glass?
Obsidian is a glass of volcanic origin.
Must all rocks form crystals?
All rock does not contain mineral crystals. Obsidian, or volcanic glass, in particular is a rock that has cooled so quickly from lava that mineral crystals were not able to form.
What mineral has a hardness of 5 Mohs scale nad can be scratched by a steel?
apatite, cobalt, zirconium, palladium, tooth enamel, obsidian (volcanic glass)
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.
