Arkose is a sedimentary rock with a lot of quartz in it.
Arkose Ridge is a front range massif of the Talkeetna Mountains with a lot of powder on it. J48, J-Rock, Andrew, & yours truly made a day of it on Arkose Ridge. Sun effects were evident on the south-ish and western aspects. The northern aspects were smoke-like.
J48 & uberdog, Cody.
This could be trouble.
Suncrust was like an egg shell, except where it was grabby.