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Is obsidian a sedimentary rock igneous rock or a metamorphic rock?
Wiki User
∙ 11y ago
obsidian is an igneous rock, it is not formed from sediment, or a rock going under heat and pressure for the second time it is formed when a volcano erupts and it cools very quickly giving it a smooth glossy surface like glass.
Hugh Luettgen
Wiki User
∙ 12y agoobsidian is an igneous rock, it is not formed from sediment, or a rock going under heat and pressure for the second time it is formed when a volcano erupts and it cools very quickly giving it a smooth glossy surface like glass.
Wiki User
∙ 11y agoObsidian is an extrusive igneous rock, usually a shiny black volcanic glass.
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Is obsidian rock metamorphic rock sedimentary or igneous?
Obsidian is an extrusive igneous rock, formed from rapidly cooling lava.
Is schist a sedimentary or igneous or metamorphic rock?
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When sedimentary rock is deposited on top of igneous or metamorphic rock?
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Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
Is obsidian rock metamorphic rock sedimentary or igneous?
Obsidian is an extrusive igneous rock, formed from rapidly cooling lava.
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Graphite is a mineral, not a rock that is classified as metamorphic, igneous or sedimentary.
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Three (3) rocks in the rock cycle are sedimentary, igneous, and metamorphic rock.
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Is shale igneous metamorphic sedimentary?
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