C1
Lesson Summary
Vocabulary Link
- mineral
- inorganic
- crystalline
- streak
- luster
- cleavage
- fracture
- density
- hardness
- rock
- rock-forming minerals
- A mineral is a naturally occurring inorganic, crystalline solid with a definite chemical composition.
- We identify minerals by their physical properties such as color, streak, luster, cleavage or fracture, density, and hardness.
- Rock is composed of different combinations of minerals.
- Rock-forming minerals are the minerals that form most of the rocks of the Earth’s crust.