the.com/gypsum
the rock so soft your fingernail bullies it, yet it built civilization's walls.
mohs hardnessJust 2, scratchable by a fingernail
drywall kingNearly every modern wall is its powder
desert flowersForms crystal roses in arid sands
white sandsNew Mexico's dunes are pure gypsum
plaster of parisHeat it, add water, casts your broken bones