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Impossible to say, not knowing the definition of plain regular rock.
There are some rocks harder than obsidian, while many are softer.
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∙ 11y ago
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How does a regular rock turn into obsidian?
If a rock gains enough heat and then is cooled suddenly enough it turns into obsidian,
What is a glassy rock?
Obsidian is a naturally occurring volcanic form of glass.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
What is the hardness of a volcanic rock?
That varies widely between different types of volcanic rock. Obsidian or volcanic glass, is harder then pumice, but both are volcanic rocks.
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.
Is volcanic rock obsidian?
No. Obsidian is just one of many types of volcanic rock.
Teotihuacan is famous for artifacts made from?
Volcanic rock.
What is the obsidian rock type?
Obsidian is an extrusive felsic igneous rock.
How was the rock obsidian made?
Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
