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Fern No. 1 Mine (Fern #1 Mine), Hoskinnini Mesa, Navajo County, Arizona, USAi
Regional Level Types
Fern No. 1 Mine (Fern #1 Mine)Mine
Hoskinnini MesaMesa
Navajo CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
36° 59' 28'' North , 110° 17' 46'' West
Latitude & Longitude (decimal):
36.99112,-110.29636
GeoHash:
G#: 9w9d6nh8u
GRN:
N25W64
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Oljato-Monument Valley674 (2016)5.9km
Oljato-Monument Valley154 (2017)9.4km
Kayenta5,189 (2011)29.5km
Halchita266 (2011)39.2km
Dennehotso746 (2011)43.1km
Mindat Locality ID:
310783
Long-form identifier:
mindat:1:2:310783:9
GUID (UUID V4):
0


An U-V-Cui occurrence located in the approximate NW¼ sec. 4, T41N, R19E, G&SRM, 7.3 km (4.5 miles) E of Hoskinnini Mesa (coordinates of record) and 7.1 km (4.4 miles) WSW of Goulding (San Juan County, Utah), in West Monument Valley.

Mineralization is an U channel deposit in a NNW-trending paleochannel filled with rocks of the Shinarump Member of the Chinle Formation. Ore includes uraninite and copper sulfides. Located on the east flank of the Oljeto syncline, which is superimposed on the Monument upwarp.

Workings include 27,000 feet of drilling to an average depth of 120 feet.
Room and pillar method of underground mining. Workings caved in 1961 following flooding.

Production was 10,484 tons of ore @0.66% U308; 0.29% V2O5 (1956, 1957 & 1961).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘUraninite4.DL.05UO2

List of minerals for each chemical element

OOxygen
Oⓘ UraniniteUO2
UUranium
Uⓘ UraniniteUO2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

U.S. Department of Energy files.
USGS Boot Mesa quadrangle 15 minute topo map.
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona – Final Report, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143 (81) (March 1981). RME-2071: 219.
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