earth science 2.3
TRANSCRIPT
Properties of Minerals 2.3
Streak
• The color of a mineral in powdered form.
Luster• Used to describe how light is reflected
from the surface of a mineral.
Crystal Form• The visible expression of a mineral’s
internal arrangement of atoms.
Hardness
• A measure of the resistance of a mineral to being scratched.
Mohs Scale
• It consists of 10 minerals arranged from 10 (hardest) to 1 (softest).
Cleavage • The tendency of a mineral to cleave, or
break, along flat, even surfaces.
Fracture
• Uneven breakage of a mineral.
Density• A property of all matter that is the ratio
of an object’s to its volume.
Key Concept
• What properties can be used to identify minerals?–Streak, luster, color, hardness,
cleavage, and density are all used to identify minerals.
Key Concept
• What is the Mohs Scale?–It consists of 10 minerals arranged
from 10 (hardest) to 1 (softest).
Key Concept
• What are some distinctive Properties of minerals?–Feeling, mineral group/chemical
formula, color, density, and hardness are all distinctive properties of minerals.