The origin of Shinarump wonderstone, Hildale, Washington County

  • Richard M. Kettler Earth & Atmospheric Sciences, University of Nebraska
  • David B. Loope Earth & Atmospheric Sciences, University of Nebraska

Abstract

Southern Utah’s “wonderstone” is Shinarump sandstone, variably cemented and stained with iron oxide, forming intricate patterns reminiscent of landscapes. It is cut and sold as absorbent drink coasters and decorative objects, and is seen in rock shops across the country. The wonderstone pattern comprises thick bands
of iron oxide mineralization that fills pore space (referred to as iron oxide cement or IOC) and more delicate bands of iron oxide mineralization that coats sand grains but does not fill pore space (referred to as iron oxide stain or IOS).

Multistory exposure of Shinarump sandstone in quarry with thin interbeds of less resistant mudstone.
Published
2019-12-31
How to Cite
Kettler , R., and Loope , D., 2019, The origin of Shinarump wonderstone, Hildale, Washington County: Utah Geological Association Publication, v. 1, no. 1, p. 1-7., doi: 10.31711/geosites.v1i1.80.
Section
Articles