PROPERTIES TO TEST MINERALS
1. Streak test is a tile used to rub a mineral to determine its streak color.
2. Scratch test is used to test for hardness of a mineral.
a. Talc is the softest 1
b. diamond is the hardest one 10
LUSTER
How light bounces off a mineral: glassy, metallic, greasy, or dul
CLEAVAGE COLOR
How a mineral splits or breaks variety of rock colors
Left: scratch test Center: streak test Right : Luster