The Comstock and Dexter Mine is a gold mine located in Yavapai county, Arizona at an elevation of 3,399 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.
Mine Info
Elevation: 3,399 Feet (1,036 Meters)
Commodity: Gold
Lat, Long: 34.61694, -113.20917
Map: View on Google Maps
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Mine Description
The Comstock and Dexter property is on a tributary of Boulder Creek, about 1 1/2 miles south of the Hillside mine. During the late eighties and early nineties, the Dillon brothers Worked this deposit and treated their ore in a small stamp mill. Later, the mine was acquired by John Lawler and associates. According to local people, the deposit produced several thousand dollars worth of gold.
In 1932, the General Minerals Company obtained the property, built a new camp and a road that connects with the Hillside mine road, and started sinking a new shaft. Operations were suspended in 1933.
Here, mediumly massive gray schist strikes northward and dips almost vertically. The vein strikes and dips essentially With the lamination of the schist. It was opened by more than 500 feet of drifts on two adit levels, and by a new 120-foot vertical shaft that reaches the upper level. Most of the ore mined consisted of oxidized material from the upper level which, according to M. J. Lawlerl, generally averaged less than $16 per ton in gold.
As seen in the lower adit drifts, which are about 300 feet in length and 170 feet below the collar of the new shaft, the vein ranges from a few inches to about 1 1/2 feet in width. It consists of stringers and irregular bunches of coarse-grained, massive White quartz with irregular bunches and disseminations of pyrite, galena, and sphalerite.
Text from Arizona Lode Gold Mines and Gold Mining, Arizona Bureau of Mines. Original 1934, revised 1967
Comstock and Dexter Mine MRDS details
Site Name
Primary: Comstock and Dexter Mine
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Secondary: Lead
Location
State: Arizona
County: Yavapai
District: Eureka District
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Form: STRINGERS, IRREGULAR BUNCHES
Structure
Type: R
Description: Foliation In Schist Trends N-S To N20w; Major N-S Trending Faults
Type: L
Description: Veins Parallel Quartz Monzonite Porphyry Dikes Or Faults
Alterations
Alteration Type: L
Alteration Text: None
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Galena
Ore: Sphalerite
Ore: Gold
Ore: Silver
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Production): MOST ORE MINED WAS OXIDIZED AND FROM THE UPPER LEVEL, WITH AVERAGE VALUES LESS THAN $16 PER TON
Comment (Deposit): TWO INTERSECTING VEINS AT MINE
Comment (Geology): DEPOSIT IS QUARTZ VEIN THAT CUTS PROTEROZOIC QUARTZ-MICA SCHIST AND MUSCOVITE GRANITE. VEINS ARE UNRELATED AND YOUNGER THAN GRANITE, BUT ARE GENETICALLY RELATED TO QUARTZ MONZONITE PORPHYRY DIKES
References
Reference (Deposit): ANDERSON, C.A., 1955 , GEOLOGY AND ORE DEPOSITS OF THE BAGDAD AREA, YAVAPAI COUNTY, ARIZONA: U.S.G.S. PROF. PAPER 278 , P. 89 - 92
Reference (Deposit): WILSON, E.D., 1934 , ARIZONA LODE GOLD MINES AND GOLD MINING: ARIZONA BUREAU OF MINES BULLETIN 137 , P. 25
Arizona Gold
"Where to Find Gold in Arizona" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Arizona.
