 |
MINERAL IDENTIFICATION PROJECT |
|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | montmorillonite | 1.00 | basal | Uneven | opaque | none | 1.70 | dull | white | white | microcrystalline | silicates | Micron sized crystals only. Mineral in the Smectite group of claylike minerals. Constituent of expanding soils. |
|