Density
Streak colour
Crystal habit
Transmission of light
Surface colour
Flavour
Lustre
Hardness
Chemical reactions
Cleavage
Magnetism
The relationship between the mass of a mineral and the volume it occupies
The way the mineral breaks
The colour of the mineral in powdered form
This property can vary greatly within each mineral species
How resistant the mineral's surface is to scratching
The ways a mineral tastes
The reactivity of a mineral towards acids
Some minerals show birefringence
The specific shape of the mineral crystals
The way minerals reflect light
The way some minerals can move a compass needle