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Hot group, Mount Tobin Mining District, Pershing County, Nevada, USAi
Regional Level Types
Hot groupMine
Mount Tobin Mining DistrictMining District
Pershing CountyCounty
NevadaState
USACountry

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Latitude & Longitude (WGS84):
40° 11' 30'' North , 117° 39' 3'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Imlay171 (2011)67.1km
Mindat Locality ID:
58343
Long-form identifier:
mindat:1:2:58343:6
GUID (UUID V4):
5ff3041c-68ca-4fd1-b8e3-e41a8db627cf
Other/historical names associated with this locality:
Polkinghorne Mine


Sec 24 T27N R38E
Structure: Mt. Tobin Thrust Fault Ne Trending Fault Zones

Alteration: Replacement, Silicification

Deposit: Claims located in 1956. Idle since 1958. Development includes extensive bulldozer cuts, a short adit, and numerous shallow test pits. Mine is in the lower plate of the mt. Tobin thrust fault. ; info.src : 1 pub lit; 2 unpub rept; 3 field observ some cinnabar is younger than the stibnite. In places, the cinnabar forms blebs and veinlets As much As 0.25 inch thick in barite lenses 1-3 ft thick, and locally it is accompanied by stibnite and sb oxides. In some places the ore is very rich and may contain several percent hg, but such places have been so small and so erratically distributed that exploration in this area of scant exposure has been difficult.

Deposit type: Barite-fluorite veins

Development: Idle since 195810 claims leased soon after staking in 1956 to humboldt metals, a partnership arranged by r. R. Whiting. Exploration done in 1957 was not productive and the lease was dropped. from 1963 to 1972 additional exploration by bulldozing, drilling, and geochemical sampling was done by the owners and at least two groups of lessees, but with the depressed price of mercury, the title was apparently allowed to lapse after 1973. In 1974, part of the ground was staked As the valley view claim by ed hager. In 1978, an eastern sector was relocated by the chemical and petroleum corp As the bonetta claim, and a western part by houston oil and minerals corp As the cain group.

Geology: Barite occurs As veinlets, isolated pods, and masses replacing the limestone. Small grains and crystals of cinnabar occurs erratically in barite veins and along thin seams in the fractured limestone adjoining the fault. Stibnite occurs As sporadic pods along the fault. The stibnite and some of cinnabar were deposited earlier than the barite. Some of the cinnabar is younger than the stibnite. ; geol.desc: NE trending fault zones

Rock formation(s): Natchez Pass Formation


Ore(s): Fault Zone

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


4 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Cinnabar2.CD.15aHgS
β“˜Stibnite2.DB.05Sb2S3
β“˜Kermesite2.FD.05Sb2S2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4

List of minerals for each chemical element

OOxygen
Oβ“˜ BaryteBaSO4
Oβ“˜ KermesiteSb2S2O
SSulfur
Sβ“˜ BaryteBaSO4
Sβ“˜ CinnabarHgS
Sβ“˜ KermesiteSb2S2O
Sβ“˜ StibniteSb2S3
SbAntimony
Sbβ“˜ KermesiteSb2S2O
Sbβ“˜ StibniteSb2S3
BaBarium
Baβ“˜ BaryteBaSO4
HgMercury
Hgβ“˜ CinnabarHgS

Other Databases

Link to USGS MRDS:10040473

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References

 
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