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St. Anthony mine (Toy mine), Toy District, Churchill Co., Nevada, USAi
Regional Level Types
St. Anthony mine (Toy mine)Mine
Toy DistrictMining District
Churchill Co.County
NevadaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 39° 59' 18'' North , 118° 42' 24'' West
Latitude & Longitude (decimal): 39.98857,-118.70679
GeoHash:G#: 9r5e6z8q7
USGS MRDS Record:10103920
Locality type:Mine
Köppen climate type:BWk : Cold desert climate
Nearest Settlements:
PlacePopulationDistance
Lovelock1,878 (2017)29.0km


SW side of pluton.
Deposit: The contact of sediments with the quartz monzonite pluton dips 30-70s and cuts across beds at a small angle. Near the collar of the shaft the contact bends across the strike of the beds cutting out the marble eastward. Tactite occurs along the marble/quartz monzonite contact. Scheelite occurs in the- tactite along with quartz, garnet, diopside, epidote, and hor-nblende. Almost all the tactite was tungsten ore, but tactite was present along only a small part of the contact. Below the 5th level, some of the tactite is rich in fluorite and contain-s pods of sphalerite with a little pyrite, galena and chalcopyrite. In the upper portion of the mine, the tactite is oxidized to a porous, friable aggregate of quartz, iron oxides, and Scheelite, and the heavy silicate minerals are almost lacking. The main orebody extends west from the bend in the contact near the shaft for about 225 ft at the surface and becomes shorter with depth. The ore was 1-15 ft wide in upper levels but below the 5th level the orebody is a narro W pipe 2-5 ft wide and -20 ft long. Where the orebody is longest and thickest, the con-tact has the flattest dip. The small lenses of ore exposed west of the main ore body are narrow and appear to be shallow. The average grade of the ore mined was about 1.35 % wo3. Currently (1985) all of the stopes which daylight at surface along the contact display very little skarn (dark silicate) zone. The outcrop of the contact silicate zone is marked by pods of white quartz; pillars remaining in the stopes are largely quartz with a thin layer (6 in to 2 ft) of pale silicate rock occupyin-g the contact between granodiorite and coarsely crystalline marble. The zone is stained with iron and Mn oxides. No sulfides of any type were noted. On the eastern dumps, some blocks of white silicated limestone with strings of small garnet crystal-s along bedding planes.

Deposit type: W skarn

Development: In 1908, two lovelock residents, panning their claims for gold found a heavy white mineral in their concentrates, which was sent to san francisco where david atkins, a mining engineer, identified it As scheelite, and it resulted in the first u. S. Discovery of tungsten in a contact metamorphic deposit. The mining claims surrounding the discovery were sold to the st. Anthony mines co., a subsidiary of atolia mining co., in 1908. Little work was done until 1915, when the demand for tungsten created by wwi caused the price of tungsten to rise. In 1915, 20 tons of scheelite-bearing ore was mined and shipped to atolia, Ca for experimental milling. A mill was built in 1915 and tungsten was produced until the price dropped in 1918 forcing closure, and the mill was dismantled in 1921. Mill tailings were retreated in 1925-1926 by g. W. Poole. In 1940-1943 the rare metals corp mined 2423 tons ore treated at the toulon mill, and the mine was active again 1954-1956. Inactive when visited in 1985.

Geology: Many small faults cross the contact zone but there is no recognized relationship between them and ore distribution-. The contact is cut and apparently offset by faults.in at least one place the contact appears to be generally conformable to sedimentary bedding. Locally the granodiorite footwall follows small folds in the limestone. Marble extends for up to 100 -ft away from the contact; the intrusive itself shows fracturing, iron staining along fractures, and is cut by quartz veins and at least two types of dike rocks.

Ore(s): Contact Between Limestone & Pluton

Regions containing this locality

North America PlateTectonic Plate

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


13 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!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada
Chalcopyrite
Formula: CuFeS2
Reference: NBMG 85-3; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada
Diopside
Formula: CaMgSi2O6
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada
Fluorite
Formula: CaF2
Reference: NBMG 85-3
Galena
Formula: PbS
Reference: NBMG 85-3; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Hornblende'
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hydrotungstite
Formula: WO3 · 2H2O
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; NBMG 85-3
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada
Pyrite
Formula: FeS2
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada
Quartz
Formula: SiO2
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; NBMG 85-3; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Scheelite
Formula: Ca(WO4)
Reference: NBMG Bull 83 Geology and Mineral Deposits of Churchill County, Nevada; NBMG 85-3; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Sphalerite
Formula: ZnS
Reference: NBMG 85-3; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hydrotungstite4.FJ.15WO3 · 2H2O
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Nontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Acid Hydrated Molybdates and Tungstates
Hydrotungstite49.1.1.1WO3 · 2H2O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Clinozoisite58.2.1a.4{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 clays
Nontronite71.3.1a.3Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H Limonite(Fe,O,OH,H2O)
H NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
H HydrotungstiteWO3 · 2H2O
CCarbon
C CalciteCaCO3
OOxygen
O ScheeliteCa(WO4)
O Garnet GroupX3Z2(SiO4)3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O QuartzSiO2
O DiopsideCaMgSi2O6
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O CalciteCaCO3
O Limonite(Fe,O,OH,H2O)
O NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
O HydrotungstiteWO3 · 2H2O
FFluorine
F FluoriteCaF2
NaSodium
Na NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mg DiopsideCaMgSi2O6
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
Si DiopsideCaMgSi2O6
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SSulfur
S PyriteFeS2
S GalenaPbS
S SphaleriteZnS
S ChalcopyriteCuFeS2
CaCalcium
Ca ScheeliteCa(WO4)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca DiopsideCaMgSi2O6
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca FluoriteCaF2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
WTungsten
W ScheeliteCa(WO4)
W HydrotungstiteWO3 · 2H2O
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Miocene - Jurassic
5.333 - 201.3 Ma



ID: 2846804
Felsic phaneritic intrusive rocks

Age: Phanerozoic (5.333 - 201.3 Ma)

Description: Poorly dated felsic intrusions described as granitic rocks, granite porphyry, granodiorite, quartz monzonite, and many undivided plutonic rocks are included here. They crop out in every county except Elko and northern Washoe.

Comments: Original map source: Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000.

Lithology: Major:{granitic,granodiorite,quartz monzonite}, Minor:{plutonic}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Triassic
201.3 - 251.902 Ma



ID: 3184762
Mesozoic sedimentary rocks

Age: Triassic (201.3 - 251.902 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Willden, Ronald, and Speed, R.C., (1974), Geology and Mineral Deposits of Churchill County, Nevada: NBMG. Bull 83
Hess, F.L., and Larsen, E.S., (1921), Contact-metamorphic Deposits of the United States: USGS Bull 725-d. P. 245-309.
Lemmon, D.M. and Tweto, O.L., (1962), Tungsten in the U.S., USGS Map Mr-25.
NBMG Staff, (1985), NBMG Ofr 85-3.


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