sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - 250 ml display bottle with ground glass stopper When this sand is gone

When this sand is gone

Not cleaved into rectangular blocks

and contributes sand to small dunes near its base

Some time ago the trash was almost all cleaned up

Not the dense Irish peat that is no longer being used as a fuel

sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - 250 ml display bottle with ground glass stopper When this sand is goneTransported from the Appalachians by a continent spanning river system, the Navajo was deposited during the Jurassic as sand in a vast coastal and inland dune field, which subsequently became lithified into a sandstone. Near Hurricane, Utah this sandstone is 2,400 feet thick. It is weathering and forming new dunes where it is picked up by the wind and redeposited. A hematite coating gives this quartz sand its color. The Navajo sandstone is widely