near Stevenson, Skamania County, Washington, USA |
CaCO3 - Occurs as clear colorless dogtooth crystals to 1 cm in amygdules. | |
(Na2,Ca,K2)Al2Si10O24 - 7H2O - Occurs as sprays of needle-thin acicular crystals, some forming spherical radial clusters to less than a centimeter within amygdules. | |
(Ca,Na)2-3Al3(Al,Si)2Si13O36 - 12H2O
- Occurs as light orange-red druse crystallized within amygdules. |
Aesthetic sprays of MORDENITE on HEULANDITE |
Dogtooth CALCITE on HEULANDITE |
MORDENITE |