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sandstone - teaching hand/display specimen of white to cream fine-grained Springdale Sandstone Member of the Moenave Formation

$ 7.50

The Springdale Sandstone is a geological oddity. In the Silver Reef Mining District in Washington County, Utah, this sandstone contained silver chloride. Silver Reef was the only major productive district of sandstone silver ores in the US and is one of the few places worldwide where sandstone contains silver.

Silver chloride or chlorargyrite is inconspicuous and almost invisible in the sandstone. At Silver Reef, it constitutes the silver end-member of the oxidized carnotite deposits of the Colorado Plateau, where the carnotite is contained in Lower Cretaceous and Upper Jurassic sandstones. It was deposited in braided stream channels and minor flood-plain environments, and contains poorly preserved carbonized plant fragments. Copper mineralization introduced specks of azurite and malachite.

The Early Jurassic Springdale Sandstone is a member of the Moenave Formation, though some geologists place it in the overlying Kayenta Formation, also Early Jurassic.

We also have this sandstone in hand specimens that ship in a small flat rate Priority Mail box. These make sense if you are purchasing a single specimen.

 

 

 

Shipping: Priority Mail small flat rate box unless combined with other purchases. 

Select a specimen: You can select a specimen by telling us what is in the photo with it, a blue or black and silver pen, a black mechanical pencil or one of those plus some number of coins, or you can let us make the selection.

Making multiple purchases? Click on the "combine shipping" button in the shopping cart. We'll send an invoice with combined shipping. A link in that invoice will bring you back to checkout, no hassle.