The sand at @whitesandsnps is largely comprised of gypsum from broken down selenite crystals. Normally gypsum is water soluble and so it does not create sand. Due to the unique conditions in this part of New Mexico however, the sands have gathered to create these gorgeous and massive dune fields.
“My experience is what I agree to attend to. Only those items which I NOTICE shape my mind.” - William James, The Principals of Psychology, Vol. 1
Heard this quoted by Eric Langshur on an epsiode of the @bulletproof podcast today! It resonated with me...