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Grand Central Mine, Mammoth, Tintic District, East Tintic Mts, Juab Co., Utah, USAi
Regional Level Types
Grand Central MineMine
Mammoth- not defined -
Tintic DistrictMining District
East Tintic MtsMountain Range
Juab Co.County
UtahState
USACountry

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Latitude & Longitude (WGS84): 39° 56' 10'' North , 112° 7' 0'' West
Latitude & Longitude (decimal): 39.93633,-112.11667
GeoHash:G#: 9x070wpju
USGS MRDS Record:10020087
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Eureka666 (2017)2.0km
Mount Nebo302 (2006)13.8km
Elberta256 (2011)14.4km
Goshen944 (2017)18.5km
Genola1,419 (2017)24.2km


A former Cu-Au-Pb-Ag occurrence/mine located in sec. 19, T10S, R2W, SLM, 1.5 km (0.9 mile) NE of Mammoth, on private (patented) land. Discovered in 1875 by a shaft sinking. First produced in 1872. Closed in 1960. Owned by the McIntyre family, Mammoth (100%), Utah (1976) [E. Steele McIntyre, Eureka, UT]. Operated by Walter Morgan. MRDS database stated accuracy for this location is 10 meters. The last serious work was by ASARCO in 1940 (Reed Welch, Geologist).

Mineralization is a Pliocene replacement deposit hosted in the Late Silurian Opohonga Limestone and A Jax Dolomite. The ore body strikes N15W to N30W, dips 80 & plunges 90 and has a depth-to-bottom of 762 meters. It is 6 meters in thickness, 70 meters wide and 850 meters long, with a depth-to-top of 250 meters. The ore body is an irregular replacement deposit. The primary mode of origin was hydrothermal activity. The secondary mode was oxidation. Primary ore control was lithology and secondary was faulting. Wallrock alteration is moderate (silicification). There are large bodies of siliceous ore, 200 feet wide in places. A second ore shoot rich in Cu was reported 700 feet to the W on the 2,000 level. Local rocks include Upper Cambrian carbonate rocks in central Utah.

Workings include underground openings with a length of 6,000 meters and an overall depth of 750 meters and/or a length of 1,609.3 meters, overall depth of 731.52 meters and an overall length of 3,218.6 meters. A winze followed the ore below the 2,400 level. The adit level is in the gulch below the shaft And the adit carried ore to the railroad. A connection was made in the 1970's from the Mammoth workings on the 1,500 and 2,100 levels. Faulted continuation of ammoth or was mined at depth.

This deposit produced 27,000 tons of ore in 1916 and similar tonnages until 1940. Most ore was shipped as smelter flux.

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


15 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10275923.
Baryte
Formula: BaSO4
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Calcite
Formula: CaCO3
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10275923.
Cerussite
Formula: PbCO3
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10275923.
Chalcocite
Formula: Cu2S
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Chalcopyrite
Formula: CuFeS2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Chlorargyrite
Formula: AgCl
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
Reference: Bannister, F.A., Hey, M.H., and Claringbull, G.F. (1950) Connellite, buttgenbachite, and tallingite. Mineralogical Magazine, vol. 29, n° 211, 280-286.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 573, 578.
Covellite
Formula: CuS
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Enargite
Formula: Cu3AsS4
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Galena
Formula: PbS
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Gold
Formula: Au
Reference: Carl L. Ege (2005) Selected Mining Districts of Utah. Utah Geological Survey Miscellaneous Publication 05-5
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Quartz
Formula: SiO2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10275923.
Quartz var: Jasper
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Silver
Formula: Ag
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Spangolite
Formula: Cu6Al(SO4)(OH)12Cl · 3H2O
Reference: Dana 7:II:573 & 578.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Enargite2.KA.05Cu3AsS4
Galena2.CD.10PbS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Connellite3.DA.25Cu19(SO4)(OH)32Cl4 · 3H2O
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Baryte7.AD.35BaSO4
Spangolite7.DD.15Cu6Al(SO4)(OH)12Cl · 3H2O
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 3 - SULFOSALTS
ø = 4
Enargite3.2.1.1Cu3AsS4
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Baryte28.3.1.1BaSO4
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq·xH2O, where m:p > 6:1
Connellite31.1.1.1Cu19(SO4)(OH)32Cl4 · 3H2O
Spangolite31.1.5.1Cu6Al(SO4)(OH)12Cl · 3H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Jasper
-SiO2

List of minerals for each chemical element

HHydrogen
H ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
H SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
H Limonite(Fe,O,OH,H2O)
CCarbon
C CalciteCaCO3
C CerussitePbCO3
OOxygen
O ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
O SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
O BaryteBaSO4
O Limonite(Fe,O,OH,H2O)
O AnglesitePbSO4
O CalciteCaCO3
O CerussitePbCO3
O QuartzSiO2
AlAluminium
Al SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
SiSilicon
Si QuartzSiO2
SSulfur
S ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
S SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
S BaryteBaSO4
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S CovelliteCuS
S EnargiteCu3AsS4
S GalenaPbS
S AnglesitePbSO4
ClChlorine
Cl ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cl SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
Cl ChlorargyriteAgCl
CaCalcium
Ca CalciteCaCO3
FeIron
Fe ChalcopyriteCuFeS2
Fe Limonite(Fe,O,OH,H2O)
CuCopper
Cu ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cu SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu EnargiteCu3AsS4
AsArsenic
As EnargiteCu3AsS4
AgSilver
Ag ChlorargyriteAgCl
Ag SilverAg
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu
PbLead
Pb GalenaPbS
Pb AnglesitePbSO4
Pb CerussitePbCO3

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

Holocene
0 - 0.0117 Ma



ID: 3343486
Artificial fill

Age: Anthropocene (0 - 0.0117 Ma)

Description: Man-made debris, slag heaps, mine dumps, mill tailings, and earthworks constructed from local materials. Some, such as embankments for dams, highway and railroad roadbeds, and engineering structures are engineered fills; others are random accumulations of various materials. Although not shown as the artificial fill unit, much of the Intermountain Power Project site is covered with graded and compacted local and imported earth materials.

Reference: Pampeyan, E.H. Geologic map of the Lynndyl 30′ x 60′ quadrangle, west-central Utah (digitized 2005). Utah Geological Survey Miscellaneous Investigations Series Map I-1830. [193]

Quaternary - Miocene
0 - 23.03 Ma



ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 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]

Early Ordovician - Furongian
470 - 497 Ma



ID: 3012997
Ajax Dolomite and Opex Formation

Age: Paleozoic (470 - 497 Ma)

Stratigraphic Name: Ajax Dolomite; Opex Formation

Description: Ajax Dolomite and Opex Formation (upper member of Maxfield Limestone).

Comments: Original map source: Hintze, L.F., Willis, G.C., Laes, D.Y.M., Sprinkel, D.A., and Brown, K.D., 2000, Digital Geologic Map of Utah: Utah Geological Survey, Map 179DM, scale 1:500,000.

Lithology: Major:{dolostone}, Minor:{limestone,shale}, Incidental:{chert}

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]

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)
Tower, G.W., Jr. and Smith, G.O. (1898) USGS 19th. Annual Report, volume III.
Ford, W.E. and Bradley, W.M. (1915) On the identity of footeite with connellite together with the description of two occurrences of the mineral. American Journal of Science: 39: 570-676.
Lindgren, W. and Loughlin, G.F. (1919) Geology and Ore Deposits of the Tintic Mining District, USGS Professional Paper 107, 276 pp.: 133.
Bannister, F.A., Hey, M.H., and Claringbull, G.F. (1950) Connellite, buttgenbachite, and tallingite. Mineralogical Magazine, vol. 29, n° 211, 280-286 (referring to Ford and Bradley (1915)).
Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 573, 578.
Cook, D.R. (1957) Geology of the East Tintic Mountains and Ore Deposits of the Tintic Mining District: Utah Geological Society Guidebook 12, 183 pp.
Morris, H.T. (1964) Geology of the Eureka Quadrangle, Utah and Juab Counties, Utah,USGS Bulletin 1142-K: K1-K29.
Morris, H.T. (1968) The Main Tintic Mining District, in: Ridge, J.D., editor, Graton Sales Volume, A.I.M.E.
Morris, H.T. and Lovering, T.S. (1979) General Geology and Mines of the East Tintic Mining District, Utah and Juab Counties, Utah, USGS Professional Paper 1024, 194 pp.
USGS (2005) Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10020087 & 10275923.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0490230065.
Pacific Report, Legal Brief: Grand Central Mining Company versus Mammoth Mining Company: 83: 648.


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