The Enterprise 1 & 2 is a gold mine located in Trinity county, California at an elevation of 2,349 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Elevation: 2,349 Feet (716 Meters)
Primary Mineral: Gold
Lat, Long: 40.8461, -123.12170
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Enterprise 1 and 2 (Chicksan Oil Company) Mine.
Location: sec. 33, T. 35 N., R. 11 W., M.D., about 5 miles north of Helena, California. Ownership: Dean and Dorothy Love, Stockton, California.
The Enterprise group, consisting of three patented and 28 unpatented claims was first located in 1882 and was operated almost continuously for more than 40 years. The most extensive workings are on the Lonely Jack claim, where a flat east-dipping quartz vein about 30 inches wide strikes northwesterly between greenstone walls. It was developed by four adits, one of which was driven west and northwest for 1600 feet. Much of the ore above this adit has been stoped out. Winzes below the adit level were 160 feet deep on 20° to 25° slopes. Leasers reported that 100 tons of ore mined from the winze workings yielded $6,500 and that a vein 6 feet wide below the main adit contained $7 to $18 gold per ton (Logan, 1926, p. 19). Near the west end of the Lonely Jack workings, a prominent fault strikes N. 60° W. and dips 47° N.
The Enterprise vein averages about 2 feet in width and dips about 10° NW. It has been displaced 2 to 15 feet by a series of step faults. According to Logan (1926, p. 19), the deposit appears to be a series of parallel blanket veins with numerous quartz-filled joint planes." The gold content is said to have been higher where the vein flattens. The gold is free in the quartz and is associated with galena, sphalerite, pyrite, and some carbonate.
The gold was recovered by amalgamation in a 10-stamp mill. About 4 tons of flotation concentrate containing $300 to $400 in gold per ton was shipped annually to the smelter. Water power supplemented by a diesel engine was used to drive the compressors and generate electricity. The property has been idle in recent years except for assessment work.
Source: Mines and Mineral Resources of Trinity County, California. County Report 4, 1965. California Division of Mines and Geology
Enterprise 1 & 2 MRDS details
Site NamePrimary: Enterprise 1 & 2
Land StatusLand ownership: National Forest
Operation Category: Occurrence
Operation Type: Unknown
Mining Method: Unknown
Years of Production:
Deposit Size: M
PhysiographyGeneral Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains