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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.

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14y ago

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Is obsidian a crystal?

yes obsidian is a crystal.


What group does obsidian belong to?

Obsidian is in the Igneous rock group.


What does rock group does obsidian belong to?

Obsidian is in the Igneous rock group.


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 crystal shape does obsidian have?

Quartz belongs to the hexagonal crystal system.


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 rock group does obsidan belong to?

Obsidian falls under the group of Extrusive Volcanic Rock of very fine texture. Obsidian is generally called Volcanic Glass.


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.


Does obsidian exhibits conchoidal fracture?

Yes, obsidian exhibits conchoidal fracture, which is a smooth, curved breakage pattern characterized by concentric ridges. This is due to its lack of internal crystal structure, which causes it to break in a unique, curved manner.


Is obsidian an element or compound?

Obsidian is neither an element nor a compound. It is a naturally occurring volcanic glass formed when lava cools rapidly without crystal growth.


Does the obsidian cool quickly?

Obsidian cools relatively quickly compared to other types of volcanic glass due to its composition and the rapid cooling process during its formation. The rate of cooling affects the crystal structure and appearance of the obsidian, leading to its characteristic smooth and glassy texture.


What igneous rock has no visible crystals?

Granite is a coarse grained igneous rock without Pyroxene.