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Hells Hollow prospect, Willow Springs, Coconino Co., Arizona, USAi
Regional Level Types
Hells Hollow prospectProspect
Willow SpringsTown
Coconino Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
36° 9' 18'' North , 111° 29' 18'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Tuba City8,611 (2011)22.4km
Moenkopi964 (2011)24.4km
Cameron885 (2016)31.8km


An U occurrence located in approximate sec. 13, T32N, R8E, G&SRM, 9.3 km (5.8 miles) WSW of Willow Springs. This locality is not listed in the USGS MRDS database. Geographic coordinates presented are approximate to the center of sec. 13.

Mineralization is an U deposit hosted in an apparent 100 foot diameter sandstone mass cutting the Hermit Shale about 50 feet below Coconino Sandstone and 800 feet above the Redwall Limestone. Radioactivity is highest on mudstone horizons in bleached Hermit Shale with iron-manganese nodules, gypsum filled fractures and large scale liesegang rings. Radiation level: 140 counts per second (cps).

Workings include exploratory operations comprised of 3 drill holes.

Regions containing this locality

North America PlateTectonic Plate
Colorado Plateau, USAPlateau
Navajo Nation Indian Reservation, USAReservation
Hopi-Navajo Indian Reservations, Colorado Plateau, Apache; Navajo and San Juan Cos., Arizona & Utah, USA

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


1 valid mineral.

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!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Gypsum
Formula: CaSO4 · 2H2O
Description: Occurs as fracture fillings.
Reference: Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 151.

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O

List of minerals arranged by Dana 8th Edition classification

Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
OOxygen
O GypsumCaSO4 · 2H2O
SSulfur
S GypsumCaSO4 · 2H2O
CaCalcium
Ca GypsumCaSO4 · 2H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 151.
U.S. Department of Energy files.
USGS Vulcans Throne, Arizona, quadrangle 7½ minute topo map.
Grand Canyon NTMS.


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