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Igneous Rocks
Peridotite Rock Type, Composition, Formation, Occurrence & Uses
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Tammy
Peridotite is a group of dense and coarse-grained ultramafic igneous rocks. The rock group contains kimberlite. The group can also ...

Igneous Rocks
Pumice Rock Type, Composition, Formation, Occurrence & Uses
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Tammy
Pumice is an igneous rock that has a light-colored and extremely porous appearance. It has been used in various industries ...

Igneous Rocks
Rhyolite Rock Type, Composition, Formation, Occurrence & Uses
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Tammy
Rhyolite is an extrusive igneous rock with a high silica concentration. The rock is usually pink or gray. The grains ...

Igneous Rocks
Scoria Rock Type, Composition, Formation, Occurrence & Uses
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Tammy
Scoria is a porous and dark-colored igneous rock that may or may not contain crystals. The usual color of scoria ...

Igneous Rocks
Trap Rock, Types, Occurrence & Uses
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Tammy
Trap rock is not a rock, but it is a broad term used to define dark-colored igneous rocks used to ...

Igneous Rocks
Tuff Rock Type, Composition, Formation, Occurrence & Uses
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Tammy
Tuff is an ingenious rock made from ash and sediments eruptions in volcanic explosions. The explosive volcano eruptions eject rocks, ...