Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Horseshoe District, Park County, Montana, USAi
Regional Level Types
Horseshoe DistrictMining District
Park CountyCounty
MontanaState
USACountry

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04450640017883612894686.jpg
Looking west across Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
07254860017883616366860.jpg
Extensive glacial moraines at Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
01715570017883616373235.jpg
Glacial moraines at Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
00728330017883612411515.jpg
Looking west across Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
07468810017883615009387.jpg
Extensive glacial moraines at Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
09764570017883615352879.jpg
Glacial moraines at Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
04450640017883612894686.jpg
Looking west across Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA
07254860017883616366860.jpg
Extensive glacial moraines at Hidden Lake

Hidden Lake, Horseshoe District, Park County, Montana, USA


60 miles east of Gardiner. Gold lodes.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

21 valid minerals.

Detailed Mineral List:

ⓘ Aluminoceladonite
Formula: K(MgAl◻)(Si4O10)(OH)2
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: Visual Identification, XRD
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Aragonite
Formula: CaCO3
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Baryte
Formula: BaSO4
References:
USGS Bull 1391-B
ⓘ Calcite
Formula: CaCO3
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Cristobalite
Formula: SiO2
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Goethite
Formula: Fe3+O(OH)
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Gypsum
Formula: CaSO4 · 2H2O
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Limonite'
References:
USGS Bull 1391-B
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
References:
USGS Bull 1391-B
ⓘ Molybdenite
Formula: MoS2
References:
USGS Bull 1391-B
ⓘ Monohydrocalcite
Formula: CaCO3 · H2O
References:
P.C. PiilonenIdentified by Paula Piilonen: XRD
ⓘ Nesquehonite
Formula: MgCO3 · 3H2O
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Pyrite
Formula: FeS2
References:
USGS Bull 1391-B
ⓘ Quartz
Formula: SiO2
ⓘ Rhodochrosite
Formula: MnCO3
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Sanidine
Formula: K(AlSi3O8)
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Tridymite
Formula: SiO2
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD
ⓘ Weddellite
Formula: Ca(C2O4) · (2.5-x)H2O
References:
Paula Piilonen CollectionIdentified by Paula Piilonen: XRD

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.00.05SiO2
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘTridymite4.DA.10SiO2
ⓘCristobalite4.DA.15SiO2
ⓘGoethite4.FD.10Fe3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘRhodochrosite5.AB.05MnCO3
ⓘAragonite5.AB.15CaCO3
ⓘNesquehonite5.CA.05MgCO3 · 3H2O
ⓘMonohydrocalcite5.CB.20CaCO3 · H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘAluminoceladonite9.EC.15K(MgAl◻)(Si4O10)(OH)2
ⓘNontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
Group 10 - Organic Compounds
ⓘWeddellite10.AB.40Ca(C2O4) · (2.5-x)H2O
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ GoethiteFe3+O(OH)
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ MonohydrocalciteCaCO3 · H2O
Hⓘ NesquehoniteMgCO3 · 3H2O
Hⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hⓘ WeddelliteCa(C2O4) · (2.5-x)H2O
Hⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
CCarbon
Cⓘ AragoniteCaCO3
Cⓘ CalciteCaCO3
Cⓘ MonohydrocalciteCaCO3 · H2O
Cⓘ NesquehoniteMgCO3 · 3H2O
Cⓘ RhodochrositeMnCO3
Cⓘ WeddelliteCa(C2O4) · (2.5-x)H2O
OOxygen
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ AragoniteCaCO3
Oⓘ BaryteBaSO4
Oⓘ CalciteCaCO3
Oⓘ CristobaliteSiO2
Oⓘ GoethiteFe3+O(OH)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MonohydrocalciteCaCO3 · H2O
Oⓘ NesquehoniteMgCO3 · 3H2O
Oⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ QuartzSiO2
Oⓘ RhodochrositeMnCO3
Oⓘ SanidineK(AlSi3O8)
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oⓘ TridymiteSiO2
Oⓘ WeddelliteCa(C2O4) · (2.5-x)H2O
Oⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
NaSodium
Naⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ NesquehoniteMgCO3 · 3H2O
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mgⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ SanidineK(AlSi3O8)
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ CristobaliteSiO2
Siⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ QuartzSiO2
Siⓘ SanidineK(AlSi3O8)
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siⓘ TridymiteSiO2
Siⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
SSulfur
Sⓘ BaryteBaSO4
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
KPotassium
Kⓘ SanidineK(AlSi3O8)
Kⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ AragoniteCaCO3
Caⓘ CalciteCaCO3
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ MonohydrocalciteCaCO3 · H2O
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caⓘ WeddelliteCa(C2O4) · (2.5-x)H2O
MnManganese
Mnⓘ RhodochrositeMnCO3
FeIron
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Feⓘ PyriteFeS2
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MoMolybdenum
Moⓘ MolybdeniteMoS2
BaBarium
Baⓘ BaryteBaSO4

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Localities in this Region

USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
USA

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