Rock Texture Flashcards
1
Q
What is Vesicular
A
When gasses and other volatile components erupt from the magma creating the “holey” look
2
Q
What is Porphyritic
A
Large crystals are SET in a finer grained or glassy material
3
Q
What is Pyroclastic
A
A MIXTURE of rock fragments / pumice / volcanic ash
4
Q
What is Aphanitic
A
Fine grained rock where you can see crystals with a magnifying glass
5
Q
What is glassy
A
Looks like glass BUT is formed by RAPID cooling of lava
6
Q
What is Phaneritic
A
Mineral grains easily visible