Igneous Rock Texture Flashcards by Kelsey Wilson | Brainscape

Q

Aphanitic

A

Small mineral crystals

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Q

Phaneritic

A

Large mineral crystals

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Q

Porphyritic

A

Few large crystals among some small crystals

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Q

Glassy

A

Amorphous (no crystals)

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Q

Pegmatitic

A

Very large crystals

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Q

Vesicular

A

Lots of holes (from gas bubbles)

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Q

Pyroclastic

A

Formed from volcanic ejecta

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