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Prescott Hill Mine (Betsy; Sandera Ledge prospect; Teddy lode; Houston Hill), Sultana Mine (Electric Mine; Sultana-Orleans Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley District, Nevada Co., California, USA

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Latitude & Longitude (WGS84): 39° 11' 55'' North , 121° 2' 13'' West
Latitude & Longitude (decimal): 39.1986122131, -121.036941528
A former lode Au occurrence/mine located in sec. 1, T15N, R8E, and in sec. 35, T16N, R8E, MDM, (1¼ miles) SE of Grass Valley, on private (patented) land. The property is comprised of 13 acres. MRDS database stated accuracy for this location is 500 meters. Consolidated into the Sultana Mine in 1903.

Mineralization is a vein deposit hosted in diabase and granodiorite. The ore body strikes NW and dips 25SW. Associated rocks include granodiorite. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).

Workings include underground openings with an overall depth of 518.16 meters and comprised of an inclined shaft and crosscuts.

Mineral List

3 entries listed. 3 valid minerals.

The above list 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.


Johnston, William Drumm (1940), The gold-quartz veins of Grass Valley, California: USGS PP 194, 101 pp.: 90-92.

Logan, Clarence August (1941), Mineral resources of Nevada County, California: California Division Mines (Report 37): 37(3): 374-408: 462, Pl. 3.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10086476 & 10285811.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060570112.

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