Igneous rock crystals

Question 1

Euhedral

Answer 1

Slow cooling

Well formed crystals with good faces

Question 2

Equant

Answer 2

All axis are the same length

Question 3

Sub equant

Answer 3

Most of the axis are the same length

Question 4

Prismatic

Answer 4

Four or more sides but elongated in one direction

Question 5

Anhedral

Answer 5

Poorly formed crystal faces

Question 6

Subhedral

Answer 6

Some well formed faces and some poorly formed faces

Question 7

Pegmatite

Answer 7

Igneous rock with exceptionally large crystals