sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - set of two 2-ounce jars cannot be scratched by a

cannot be scratched by a nail and which has a brownish black streak

We don't have locality data other than "Mexico

Diagenesis refers to the conversion of sediments into sedimentary rock

That's where this sand was collected

If they had been transported farther

sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - set of two 2-ounce jars cannot be scratched by aTransported 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