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Big Blackfoot Mining District (Helmville Mining District), Powell Co., Montana, USAi
Regional Level Types
Big Blackfoot Mining District (Helmville Mining District)Mining District
Powell Co.County
MontanaState
USACountry

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Latitude & Longitude (WGS84):
46° North , 112° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~92km
Locality type:


25 miles NE of Drummond. Gold placers.

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 from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

12 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!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Galena
Formula: PbS
Localities: Reported from at least 10 localities in this region.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Goethite
Formula: α-Fe3+O(OH)
Gold
Formula: Au
Localities: Reported from at least 12 localities in this region.
Hematite
Formula: Fe2O3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnetite
Formula: Fe2+Fe3+2O4
Pyrite
Formula: FeS2
Localities: Reported from at least 7 localities in this region.
Pyrolusite
Formula: Mn4+O2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Localities: Reported from at least 11 localities in this region.
Quartz var: Jasper
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Scheelite
Formula: Ca(WO4)
Localities: Reported from at least 12 localities in this region.
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Titanite
Formula: CaTi(SiO4)O
Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'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
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
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
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Jasper
-SiO2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H Limonite(Fe,O,OH,H2O)
OOxygen
O Goethiteα-Fe3+O(OH)
O TitaniteCaTi(SiO4)O
O ZirconZr(SiO4)
O ScheeliteCa(WO4)
O MagnetiteFe2+Fe23+O4
O QuartzSiO2
O Limonite(Fe,O,OH,H2O)
O HematiteFe2O3
O Garnet GroupX3Z2(SiO4)3
O PyrolusiteMn4+O2
SiSilicon
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
Si QuartzSiO2
Si Garnet GroupX3Z2(SiO4)3
SSulfur
S GalenaPbS
S PyriteFeS2
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CaCalcium
Ca TitaniteCaTi(SiO4)O
Ca ScheeliteCa(WO4)
TiTitanium
Ti TitaniteCaTi(SiO4)O
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe HematiteFe2O3
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZrZirconium
Zr ZirconZr(SiO4)
SbAntimony
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

Localities in this Region
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