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Sky Ranch Clay Mine-East pit (Wardlow Shale Mine; Sky Ranch Clay Company deposits), Corona, Santa Ana Mountains, Riverside Co., California, USAi
Regional Level Types
Sky Ranch Clay Mine-East pit (Wardlow Shale Mine; Sky Ranch Clay Company deposits)Pit
Corona- not defined -
Santa Ana MountainsMountain Range
Riverside Co.County

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Latitude & Longitude (WGS84):
33° 51' 15'' North , 117° 37' 5'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Corona164,226 (2017)5.3km
El Cerrito Corona5,100 (2018)8.9km
Home Gardens11,570 (2011)9.4km
Norco26,289 (2017)10.7km
Eastvale59,039 (2017)13.1km

A former clay deposit/pit operation located in the NE¼SW¼NW¼ sec. 4, T4S, R7W, SBM, about 5.6 km WSW of Corona (center), along Wardlow Canyon, on private (patented) land in a National Forest. MRDS database stated accuracy for this location is 100 meters.

Local rocks include Paleocene marine rocks, unit 1 (Central and Southern California).

Workings include unspecified surface openings.

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Rock Types Recorded

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Alphabetical List Tree Diagram

List of minerals for each chemical element


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California Division of Mines Bulletin 178 (1961): 78-80.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10115634.
U.S. Bureau of Mines Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0060650903.

Other Databases

USGS MRDS Record:10115634

Other Regions, Features and Areas containing this locality

North America
Pacific PlateTectonic Plate

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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