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Black Butte Copper Project, Meagher County, Montana, USAi
Regional Level Types
Black Butte Copper ProjectProject
Meagher CountyCounty
MontanaState
USACountry

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Latitude & Longitude (WGS84):
46° 46' 46'' North , 110° 53' 54'' West
Latitude & Longitude (decimal):
46.77950,-110.89846
GRN:
N32W55
Type:
Project
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
White Sulphur Springs910 (2017)25.7km
Owned/operated by:
Sandfire Resources America Inc.
Mindat Locality ID:
308615
Long-form identifier:
mindat:1:2:308615:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Johnny Lee Deposit; Lowry Deposit


The Black Butte ore body is defined by laterally extensive, shale-hosted, massive-pyrite horizons. Black Butte contains at least 10 mineralized sulfide horizons, five of which contain copper. Three of these copper-bearing sulfide horizons are of greatest interest to the company at the time of writing, and are referred to as the Lower, Middle, and Upper Sulfide Zones (LSZ, MSZ, and USZ, respectively). The USZ and LSZ are the dominant mineralized zones in the Johnny Lee Deposit, and the MSZ is more important in the Lowry Deposit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


19 valid minerals.

Rock Types Recorded

Note: 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:

ⓘ Alloclasite
Formula: Co1-xFexAsS
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Baryte
Formula: BaSO4
ⓘ Bismuthinite
Formula: Bi2S3
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Celsian
Formula: Ba(Al2Si2O8)
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cobaltite ?
Formula: CoAsS
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Enargite
Formula: Cu3AsS4
ⓘ 'Feldspar Group'
ⓘ Galena
Formula: PbS
ⓘ Graphite
Formula: C
ⓘ Marcasite
Formula: FeS2
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Microcline var. Hyalophane
Formula: (K,Ba)[Al(Si,Al)Si2O8]
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Siegenite
Formula: CoNi2S4
ⓘ Sphalerite
Formula: ZnS
ⓘ 'Tennantite Subgroup'
Formula: Cu6(Cu4C2+2)As4S12S
ⓘ Tennantite-(Zn)
Formula: Cu6(Cu4Zn2)As4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘSiegenite2.DA.05CoNi2S4
ⓘBismuthinite2.DB.05Bi2S3
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘAlloclasite2.EB.10bCo1-xFexAsS
ⓘCobaltite ?2.EB.25CoAsS
ⓘ'Tennantite Subgroup'2.GB.05Cu6(Cu4C2+2)As4S12S
ⓘTennantite-(Zn)2.GB.05Cu6(Cu4Zn2)As4S12S
ⓘEnargite2.KA.05Cu3AsS4
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘDolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘCelsian9.FA.30Ba(Al2Si2O8)
ⓘMicrocline
var. Hyalophane		9.FA.30(K,Ba)[Al(Si,Al)Si2O8]
ⓘ9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ GraphiteC
OOxygen
Oⓘ BaryteBaSO4
Oⓘ CelsianBa(Al2Si2O8)
Oⓘ DolomiteCaMg(CO3)2
Oⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Oⓘ MicroclineK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ CelsianBa(Al2Si2O8)
Alⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Alⓘ MicroclineK(AlSi3O8)
SiSilicon
Siⓘ CelsianBa(Al2Si2O8)
Siⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Siⓘ MicroclineK(AlSi3O8)
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ AlloclasiteCo1-xFexAsS
Sⓘ BaryteBaSO4
Sⓘ BismuthiniteBi2S3
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ CobaltiteCoAsS
Sⓘ EnargiteCu3AsS4
Sⓘ GalenaPbS
Sⓘ MarcasiteFeS2
Sⓘ PyriteFeS2
Sⓘ SiegeniteCoNi2S4
Sⓘ SphaleriteZnS
Sⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Sⓘ Tennantite-(Zn)Cu6(Cu4Zn2)As4S12S
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Kⓘ MicroclineK(AlSi3O8)
CaCalcium
Caⓘ DolomiteCaMg(CO3)2
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feⓘ AlloclasiteCo1-xFexAsS
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
CoCobalt
Coⓘ AlloclasiteCo1-xFexAsS
Coⓘ CobaltiteCoAsS
Coⓘ SiegeniteCoNi2S4
NiNickel
Niⓘ SiegeniteCoNi2S4
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ EnargiteCu3AsS4
Cuⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Cuⓘ Tennantite-(Zn)Cu6(Cu4Zn2)As4S12S
ZnZinc
Znⓘ SphaleriteZnS
Znⓘ Tennantite-(Zn)Cu6(Cu4Zn2)As4S12S
AsArsenic
Asⓘ AlloclasiteCo1-xFexAsS
Asⓘ CobaltiteCoAsS
Asⓘ EnargiteCu3AsS4
Asⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Asⓘ Tennantite-(Zn)Cu6(Cu4Zn2)As4S12S
BaBarium
Baⓘ BaryteBaSO4
Baⓘ CelsianBa(Al2Si2O8)
Baⓘ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
PbLead
Pbⓘ GalenaPbS
BiBismuth
Biⓘ BismuthiniteBi2S3

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]White, Joshua (2012) Paragenesis of cobalt and nickel at the Black Butte copper project, Meagher County, Montana. Montana Tech of The University of Montana.
White, Joshua, Gammons, Christopher H., Zieg, G. A. (2014) Paragenesis of cobalt and nickel in the Black Butte shale-hosted copper deposit, Belt Basin, Montana, USA. Mineralium Deposita, 49 (3) 335-351 doi:10.1007/s00126-013-0492-1
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