Black Obsidian with Phenocrysts look-alikes
Volcanic Glass (SiO2) with mineral inclusions
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Open the appSeveral rocks and minerals can be confused with Black Obsidian with Phenocrysts. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.
Similar rocks to compare
Obsidian
Volcanic Glass (SiO2)
Also known as: Volcanic Glass
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Highly vesicular volcanic glass
Also known as: Volcanic Foam
Scoria
Vesicular basaltic rock
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Pitchstone
Hydrated volcanic glass
Also known as: Waxy Obsidian
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