1. DEFINITION OF MINERAL
Naturally occurring, Inorganic Solid with a
definable chemical composition and crystal
structure
Physical Properties
Crystal Form (Shape) Page 22

2. Cubic - Fluorite

3. Dodecahedron - Garnet

4. Hexagonal Prism - Quartz

5. Octahedron - Magnetite

6. Planes of weakness along which minerals break
03_18.jpg
Two Planes not
at right angles
One Plane
Two Planes at right angles
Three Planes not
at right angles
Three Planes at right angles
Cleavage Page 23
Planes of weakness along which minerals break

7. Fracture Page 23
no well defined cleavage planes
Conchoidal Fracture
Specific Gravity
The weight of a mineral compared to the same volume of water
Luster
Intensity of light reflected off a mineral
Metallic, non-metallic- glassy (vitreous) and earthy (dull)

8. Color and Streak Page 24
Hardness – Mohs Scale
Soft
Medium
Hard
Other Properties
Reaction with acid
Taste
Magnetism