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Black Dyke Mine (Princess Gold Mine; Princess Mine), Union Pass Mining District (Katherine Mining District), Oatman Mining District, Mohave County, Arizona, USAi
Regional Level Types
Black Dyke Mine (Princess Gold Mine; Princess Mine)Mine
Union Pass Mining District (Katherine Mining District)Mining District
Oatman Mining DistrictMining District
Mohave CountyCounty

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Latitude & Longitude (WGS84):
35° 13' 54'' North , 114° 29' 44'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
Katherine103 (2011)6.1km
Laughlin7,323 (2011)10.0km
Bullhead City39,445 (2017)11.4km
Golden Valley8,370 (2011)24.8km
Oatman135 (2011)25.0km
Other/historical names associated with this locality:
Black Dyke group; Gilbert group

A former Ag-Au occurrence/mine located in the N½SW¼ sec. 2, T21N, R21W, G&SRM, 6 miles W of Union Pass and 3 miles East of the Katherine Mine, on Bureau of Land Management administered land. Owned by G. J. Alton, H. Williams and Anita G. Williams (1977). The USGS MRDS database stated accuracy for this locality is 500 meters.

Mineralization is a deposit hosted in granite. The ore body is comprised of stringers that strike NW and dip 30SW at a width of 45.72 meters and a length of 914.4 meters. Free gold occurs in clean, oxidized quartz and calcite. A large vein comprised principally of calcite, cut by a great number of small stringers of quartz. The vein takes a curved course trending NW and a length of ½ mile (about 1 km). About midway between the ends it is 150 (46 meters) feet wide. It appears to occur in a shattered rhyolite which may have been replaced to a certain extent by both the calcite and quartz. Associated rocks include Pliocene-Neoproterozoic rhyolite. Local rocks include Middle Miocene to Oligocene volcanic rocks.

Regionally Tertiary flows strike NW and dip 30 to 40NE, and overlie Precambrian granite and gneiss with NW to NNW-trending normal faulting.

Workings include underground openings comprised of a small inclined shaft plus a number of small tunnels beneath the outcrop.

Gold values are about $2.40/ton (period values).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

Mineral List

3 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Detailed Mineral List:

Formula: CaCO3
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 107.
Formula: Au
Reference: MRDS file #10027944.
Formula: SiO2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #MRDS file #10027944.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Group 4 - Oxides and Hydroxides
Group 5 - Nitrates and Carbonates

List of minerals arranged by Dana 8th Edition classification

Metals, other than the Platinum Group
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si

List of minerals for each chemical element

C CalciteCaCO3
O CalciteCaCO3
O QuartzSiO2
Si QuartzSiO2
Ca CalciteCaCO3
Au GoldAu


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lausen, C. (1931), Geology and ore deposits of the Oatman and Katherine Districts, Arizona Bureau of Mines Bulletin 131: 119.
Wilson, E.D., et al (1934), Arizona Bureau of Mines Bulletin 137: 102, 107 map.
Malach, R. (1977), Mohave County mines, Mohave County Board of Supervisors, Kingman: 52.
Conrad, J.E., et al (1990), Mineral Resources of the Black Mountains North and Burns Spring Wilderness Study Areas, Mohave County, Arizona, USGS Bulletin 1737-C: C7.
U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS), U.S. Bureau of Mines, file ID #0040150373.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #MRDS file #10027944 & 10259274.
Arizona State Department of Mineral Resources (ADMR) Black Dyke Mine-Mine file.
Arizona State Department of Mineral Resources (ADMR) files.
Arizona Bureau of Mines files.
USGS MRDS ID #M004595 .

Other Databases

USGS MRDS Record:10027944

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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