Pelican Point Quarry (Lakeside Lime Quarry), Pelican Point, Utah Lake, Utah Co., Utah, USA
|Latitude & Longitude (WGS84):||40° 16' North , 111° 51' West|
|Latitude & Longitude (decimal):||40.2666666667, -111.85|
World famous locality for exceptional goethite pseudomorphs of goethite after pyrite.
A marble & calcite (onyx) quarry in blue limestone. Owned by Mr. Cedarstrom. Located on the NW shore of Utah Lake about 35 miles South of Salt Lake City and 7 miles West of Lehi.
Geology: A sequence of limestones, dolomites, and calcareous mudstones of the Deseret formation that originated in a Mississippian shallow, lagoon environment. The goethite specimens are found in the calcareous mudstone along with a number of marine fossils, and have been collected at this site since the 1930s. Where not exposed and altered at the surface, oxidation is by exposure to groundwater.
4 valid minerals.
This information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This data will improve over time as more accurate maps and data sets are added.
|Pleistocene0.0117 - 2.588 Ma||Quaternary Lake Bonneville deposits|
|Permian - Carboniferous252.17 - 358.9 Ma||Carboniferous-Permian sedimentary rocks|
References for regional geology:
Data provided by Macrostrat.org
USGS compilers. State geologic map data. State Maps.
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
Constenius, K.N., Clark, D.L., King, J.K., and Ehler, J.B. Interim geologic map of the Provo 30′ x 60′ quadrangle, Utah, Wasatch, and Salt Lake Counties, Utah. Utah Geological Survey Open-File Report 586DM.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0490490148.
Rocks & Minerals: 12: 274-277.