Rocks

Diorite Rock
Igneous Rocks

Diorite Rock Type, Composition, Formation, Occurrence & Uses

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Tammy

Diorite is a coarse-grained intrusive igneous rock. Its composition is in-between granite and basalt. The rock is usually found as ...

Gabbro Rock
Igneous Rocks

Gabbro Rock Type, Composition, Formation, Occurrence & Uses

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Tammy

Gabbro is an intrusive igneous rock with a black or dark-green appearance. The term “Gabbro” was first used in the ...

Obsidian Rock
Igneous Rocks

Obsidian Rock Type, Composition, Formation, Occurrence & Uses

BY
Tammy

Obsidian is an igneous rock. It is an amorphous material, commonly known as a mineraloid. The rock is formed when ...