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Strawberry-Keystone Mine, Mineral Hill Mining District (Pony Mining District), Madison County, Montana, USAi
Regional Level Types
Strawberry-Keystone MineMine
Mineral Hill Mining District (Pony Mining District)Mining District
Madison CountyCounty
MontanaState
USACountry

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Latitude & Longitude (WGS84):
45° North , 111° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~77km
GRN:
N31W57
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Mindat Locality ID:
107253
Long-form identifier:
mindat:1:2:107253:5
GUID (UUID V4):
0
Other/historical names associated with this locality:
Strawberry Mine; Keystone Mine


Located 3 miles west of Pony, on the NE flank of the Tobacco Root Mts.
Last mine to operate in the Pony Mining District,shutting down sometime in the early 1980's.
In 1954, began producing scheelite(tungsten) from scheelite-bearing schist.Gold was produced from auriferous pyrite.
Mine is still open(2004),but dangerous due to the possibility of collapse due to the excessive water flow entering through fractures,and the depth of water(3-4'+).
underground workings total about 1,800'+.

The Strawberry - Keystone group is 2.5 to 3.5 miles northwest from the town of Pony. The property is composed of six patented mining claims. The mine worked two main veins and several smaller ones. The Strawberry vein was four to seven feet wide at the upper levels. The Keystone vein was richer than the Strawberry vein. The Keystone vein changes from pegmatite to quartz within the walls of single fissure.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Cerussite
Formula: PbCO3
ⓘ 'Chlorite Group'
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Limonite'
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ Titanite
Formula: CaTi(SiO4)O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘCerussite5.AB.15PbCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ CerussitePbCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ CerussitePbCO3
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
Oⓘ TitaniteCaTi(SiO4)O
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ OrthoclaseK(AlSi3O8)
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ TitaniteCaTi(SiO4)O
SSulfur
Sⓘ PyriteFeS2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ CalciteCaCO3
Caⓘ ScheeliteCa(WO4)
Caⓘ TitaniteCaTi(SiO4)O
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ PyriteFeS2
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ MalachiteCu2(CO3)(OH)2
WTungsten
Wⓘ ScheeliteCa(WO4)
PbLead
Pbⓘ CerussitePbCO3

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

Lorain, S. H. 1937 "Gold Lode Mining in the Tobacco Root Mountains, Madison County, Montana", U. S. Bureau of Mines, Inf. Circ. 6972
Winchell, Alexander Newton (1914) Mining districts of the Dillon quadrangle, Montana, and adjacent areas. Bulletin 574. US Geological Survey doi:10.3133/b574
Tansley, W., Schafer, P.A., Hart, L.H. (1933) A geologic reconnaissance of the Tobacco Root Mountains, Madison County, Montana. Memoir 9. Montana Bureau of Mines and Geology
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