Number 29

Color--------------------Shades of white to grayish white

Luster------------------Nonmetallic, dull

Streak-------------------White

Hardness--------------1.0 - 2.5

Cleavage/-------------Fracture, irregular
Fracture

S.G.---------------------3.2 - 3.6

Special Properties---One of the most common clay minerals.

Formula-----------------Al2Si2O5(OH)4

Mineral Name---------Kaolinite

Family-------------------Silicates

Uses---------------------Secondary ore of iron

Kaolinite