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Quartz belongs to the hexagonal crystal system.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agoObsidian has no crystalline structure. It is a volcanic glass, cooled so quickly from lava that no crystals were able to form.
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What is flint's crystal shape?
It has no crystal shape.
What is a crystal shape?
the shape a crystal is when formed or hardened. well that's what I learned. <3
The most common ice crystal shape?
The most comon crystal shape is diamond
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.
How much inches high wide and deep is obsidian?
Obsidian is a naturally occurring glass formed as an extrusive igneous rock. It is produced when acidic lava,extruded from a volcano cools very rapidly, freezing without sufficient time for crystal growth.Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where cooling of the lava is rapid.Because of the lack of crystal structure, obsidian blade edges can reach almost molecular thinness, leading to its ancient use as stone age knives and arrowheads, and its modern use as surgical scalpel blades.Obsidian can be found as lumps of rock of any size up to and including an entire mountainside.Obsidian has several varieties. Obsidian can contain small bubbles of air that are aligned along layers created as the molten rock was flowing just before being cooled. These bubbles can produce interesting effects such as a golden sheen, known as Sheen Obsidian or a rainbow sheen called Rainbow Obsidian. Inclusions of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern producing Snowflake Obsidian. Small nuggets of obsidian that have been naturally rounded and smoothed by wind and water are called Apache Tears.Often confused with smoky quartz, obsidian has similar properties to quartz because of a similar chemistry. However, many properties dependant on a crystal structure are altered or absent in obsidian because it lacks any crystal structure of its own. The piezoelectric and optical properties in quartz are thus absent in obsidian. Smoky quartz usually has a splotchy or zoned distribution to its color while Obsidian's color is more uniformly distributed.
Is obsidian a crystal?
yes obsidian is a crystal.
What is obsidian's cleavage?
Obsidian does not have cleavage because of the way it forms. Obsidian is essentially nature's form of glass and so it has no regular or patterned crystal structure. Without that crystal structure, there is no cleavage.
What is flint's crystal shape?
It has no crystal shape.
Is obsidian rock or gemstone?
Obsidian is an extrusive igneous rock. Volcanic in origin, it is very common in recent lava flows. Obsidian is primarily made of glass. Obsidian is amorphous, lacking any crystal structure found in gemstones. For more details, try asking the question - "What is obsidian"
What is the crystal shape of a pearl?
Pearls are not crystalline and don't have a crystal shape.
What is the crystal shape of agate?
Agate, being a cryptocrystalline (microscopic crystal structure) form of quartz, does not have a crystal shape.
How does a mineral gets its crystal shape?
minerals get its crystal shape by the heating and pressure from rock
What is a crystal shape?
the shape a crystal is when formed or hardened. well that's what I learned. <3
The most common ice crystal shape?
The most comon crystal shape is diamond
What crystal group is obsidian in?
No one knows my namestake like I do (except Crystallography majors) and in reality obsidian is not quite classified as a type of crystal at all, as its composition is too complex to comprise a single mineral, it's usually just considered a mineraloid.
What is crystal symmetry?
Crystal Symmetry is the ability of a crystal to shape by nature and has a symmetrical shape. It's also referred about the occupation of diamond cutters.
What is a crystal symmetry?
Crystal Symmetry is the ability of a crystal to shape by nature and has a symmetrical shape. It's also referred about the occupation of diamond cutters.
