Crystal Mountain Sandstone

Crystal Mountain Sandstone
State Arkansas
Name Crystal Mountain Sandstone
Geologic age Early Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Minor
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
Comments Massive sandstone with conglomerate at the base and minor shale. Approximatly 850 ft. maximum thickness. A source of museum quality quartz crystal clusters.
References

Ferguson, J.G., 1920. Outlines of the geology, soils, and minerals of the State of Arkansas: Arkansas State Bureau of Mines, Manufactures and Agriculture,192 pp.

Stone, C.G. and Bush, W.V. 1982, Summary of the geology of the eastern Ouachita Mountains, Arkansas: Guidebook - Arkansas Geological Commission, vol.82-2, 24 pp.

NGMDB product
Counties Garland - Montgomery