sand - set of five tubes of fine-grained dune sand derived from the Menefee Fm.

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Yellow-brown fine-grained dune sand derived from the Allison Member of the Menefee Formation, New Mexico i
n five polystyrene screw cap tubes.
The Allison Member of the Upper Cretaceous Menefee Formation is a cliff-forming yellow brown sandstone. As it weathers, sand grains picked up by the wind form local small dunes north of Crownpoint, New Mexico. The grains in these dunes are very fine, similar in size to the grains in the pink dune sand that is derived from the Jurassic Navajo Sandstone in Utah. It would be instructive for students to compare these dune sands - both fine-grained but very different in color. Sand is derived from whatever materials are available, a lesson emphasized by these two very different colored dune sands.
Set of five tubes, 16 ml each, optically clear polystyrene with screw caps. The plastic tubes are practical in a classroom and are somewhat student resistant, though a cap can be unscrewed.
Good for student examination.
We also offer a mixed set of sands - your selection. Enter "sand, mixed set" into the eBay search bar, without the quotes.
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