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Volcanic glass, or pumice (vesicular obsidian).
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoObsidian, volcanic glass, apache tears.
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What is the name of a smooth glassy black ingeous rock?
Obsidian
How does obsidian rock get its different colors?
how can a blue obsidian rock be blue
Does obsidian rock float?
no
A black rock formed from cooled lava?
Obsidian
Which rock is igneous and is black?
obsidian rock
What do a coal rock and a obsidian rock have in common?
nothing
What is a name for a rock that changes form?
obsidian
What are common uses for obsidian rock?
its used to make tools and jewlery
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 a glassy rock?
Obsidian is a naturally occurring volcanic form of glass.
Name a volcanic rock?
Obsidian, basalt, andesite, pumice.
What is the name of a smooth glassy black ingeous rock?
Obsidian
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
What does rock group does obsidian belong to?
Obsidian is in the Igneous rock group.
How does obsidian rock get its different colors?
how can a blue obsidian rock be blue
Is obsidian extrusive rock?
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
What is the nickname of obsidian rock?
'Volcanic glass' is the common name, for it is glassy, and comes from a volcano. Of use in anthropology, for such an excellent cutting tool has good trade value.
