Minerals
Min-02
Min-03
Min-04
Min-20
Min-08
Min-24
Min-25
Min-28
Min-29
Min-21
Alkali lake in the Okanogan of British Columbia, Canada.Evaporating alkali lake. Note how it leaves behind zones of precipitated minerals.
Zeolite minerals (Thompsonite) in vesicular basalt, Oregon.Zeolite minerals (Thompsonite) in vesicular basalt, Oregon.
Ash Flow deposit, Crater Lake, Oregon.Weathering of ash flow deposits into Pinnacles. The pinnacles are more resistant to erosion than the surrounding rock because of precipitation of minerals from gas escaping from the ash flow.
