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Monitor Mine (Gray Rock Mine), Coeur d'Alene District, Shoshone Co., Idaho, USAi
Regional Level Types
Monitor Mine (Gray Rock Mine)Mine
Coeur d'Alene DistrictMining District
Shoshone Co.County
IdahoState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84):
47° 33' 15'' North , 115° 51' 3'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Mullan675 (2017)10.0km
Wallace761 (2017)10.6km
Osburn1,510 (2017)12.4km
Kellogg2,069 (2017)20.2km
Wardner186 (2017)21.5km


REF:Deposit:: ROALES, P. A., 1973 , ORE AND MONZONITE DIKE RELATIONS, MONITOR MINE, COEUR D'ALENE DISTRICT, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, MS THESIS, 142 P.
Deposit:: FRYKLUND, V. C., JR., 1964 , ORE DEPOSITS OF THE COEUR D'ALENE DISTRICT, SHOSHONE
Deposit:: COLLIER, A. J., 1906, ORE DEPOSITS IN THE THE ST. JOE RIVER
Deposit:: BASIN, IDAHO, IN CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1905:
Deposit:: U.S. GEOL. SURVEY BULL. 285, P. 135.
Deposit:: UMPLEBY, J. B., AND JONES, E. L., JR., 1923, GEOLOGY
Commodities (Major) - Silver; (Minor) - Gold, Lead, Copper, Zinc
Development Status: Past Producer
Host Rock Unit: Lower Prichard Formation, Prichard Formation
Structure: Wnw Lewis And Clark Lineament; N - S Trout Creek Anticline (Mine On E Limb And Near S End), Brecciation
Host Rock: Argillite, Slate
Tectonic Structure: Belt Basin

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

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


18 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:

Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcopyrite
Formula: CuFeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Chlorite Group'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Galena
Formula: PbS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hematite
Formula: Fe2O3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrrhotite
Formula: Fe7S8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Siderite
Formula: FeCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Sphalerite
Formula: ZnS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Zálesíite
Formula: CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Siderite5.AB.05FeCO3
Group 8 - Phosphates, Arsenates and Vanadates
Zálesíite8.DL.15CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
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 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)7(XO4)3Zq·xH2O
Zálesíite42.5.1.7CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
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 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H AzuriteCu3(CO3)2(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
C SideriteFeCO3
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C AzuriteCu3(CO3)2(OH)2
OOxygen
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Garnet GroupX3Z2(SiO4)3
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O SideriteFeCO3
O MagnetiteFe2+Fe23+O4
O HematiteFe2O3
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O AzuriteCu3(CO3)2(OH)2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Garnet GroupX3Z2(SiO4)3
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SSulfur
S SphaleriteZnS
S GalenaPbS
S ChalcopyriteCuFeS2
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
S PyriteFeS2
S PyrrhotiteFe7S8
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
FeIron
Fe ChalcopyriteCuFeS2
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe SideriteFeCO3
Fe PyrrhotiteFe7S8
Fe MagnetiteFe2+Fe23+O4
Fe HematiteFe2O3
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcopyriteCuFeS2
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu AzuriteCu3(CO3)2(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
AsArsenic
As ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
SbAntimony
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
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

Mesoproterozoic
1000 - 1600 Ma



ID: 2126134
Prichard Formation, upper part

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Prichard Formation

Lithology: Major:: {quartzite, impure quartzite}; Minor:: {argillite}

Reference: Zientek, M.L., P.D. Derkey, R.J. Miller, J.D. Causet et al. Spatial Databases for the Geology of the Northern Rocky Mountains - Idaho, Montana, and Washington. U.S. Geological Survey Open-File Report 2005-1235 Version 1.0. [25]

Mesoproterozoic
1000 - 1600 Ma



ID: 2718456
Prichard Formation

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Prichard Formation

Description: Siltite, quartzite, and argillite in northern Idaho; deposited in deep water and contains voluminous ~1470 Ma mafic sills. Includes siltite, quartzite, fine-grained schist, and carbonate rocks structurally above anorthosite near Boehls Butte, northeast of Elk River. (Mesoproterozoic Belt Supergroup).

Comments: Original map source: Lewis, Reed S., Link, Paul K., Stanford, Loudon R., and Long, Sean P., Geologic Map of Idaho, 2012, Idaho Geological Survey, Geologic Map 9 (M-9); Scale 1:750,000.

Lithology: Major:{metasiltstone,quartzite,argillite}, Minor:{schist,carbonate}

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]

Mesoproterozoic
1000 - 1600 Ma



ID: 3186914
Mesoproterozoic sedimentary and volcanic rocks

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Purcell Group

Comments: Omineca Belt

Lithology: Mafic-intermediate volcanic rocks; limestone,shale,argillite,quartzite,dolomite,siltstone; turbidite

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

USGS MRDS Record:10106000
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