|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | heulandite (zeolite group) | 3.50 | basal | Uneven | Transparent | none | 2.20 | glassy | red | white | tabular | silicates | Clear to reddish tabular crystals. |
|