Psammite is, obviously, a psammead's favourite kind of rock, and as a psammead (you say it SAMMeeADD) is a sand fairy, psammite must therefore be sandstone.
So where can we find some sandstone?
Well, in rockeries. Paving. Grindstones. Mixed into tarmac (which seems to be called blacktop in America).
Structures are often built of psammite even though the softer sorts erode quickly:
Ruined wall, Shrewsbury Castle. Photo by ceridwen
Psammite comes in the form of hills and caves:
Lower Antelope Canyon, Arizona: photo by
It's used for statues:
Dancers, 10th century, Ho Chi Minh. Photo by Jacklee
Dumfries, Scotland. Photo by Contains Mild Peril
I only wish I could point out to you some psammite surrounding the sandy home of a genuine psammead:
Still, if you spot one, do let us all know.
Spot the frippet: psammite. This word comes from the Greek psammos, which means sand.