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Hemet Silica Mine, Hemet Butte, Santa Rosa Hills, Riverside Co., California, USAi
Regional Level Types
Hemet Silica MineMine
Hemet ButteTable/Butte
Santa Rosa HillsGroup of Hills
Riverside Co.County

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Latitude & Longitude (WGS84):
33° 42' 30'' North , 116° 57' 38'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
East Hemet17,418 (2011)4.0km
Hemet83,861 (2017)4.5km
Valle Vista14,578 (2011)7.6km
San Jacinto46,951 (2017)8.4km
Green Acres1,805 (2011)11.2km

A former silica occurrence/mine located in the SW¼SW¼NW¼ sec. 26, T5S, R1W, SBM, 0.1 km (0.1 mile) WSW of Hemet Butte, on the western slope of the butte, and 4.4 km (2.7 miles) SSE of Hemet. MRDS database stated accuracy for this location is 100 meters.

Local rocks include Mesozoic granitic rocks, unit 2 (Peninsular Ranges).

Workings include surface and underground openings (the topo map reflects 1 adit symbol at this point).

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

Mineral List

Detailed Mineral List:

Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10261551.

List of minerals arranged by Strunz 10th Edition classification

Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Mixtures, etc.

List of minerals for each chemical element


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Tucker, W. Burling & Reid J. Sampson (1929), Riverside County: California Journal of Mines and Geology, California Mining Bureau. (Report 25): 25: 504-505.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10261551.
U.S. Bureau of Mines Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0060650375.

Other Databases

USGS MRDS Record:10261551

Other Regions, Features and Areas containing this locality

North America
Pacific PlateTectonic Plate

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