Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Iron Mountain Mine (Number 8; Confidence; Old Mine), Iron Mountain, Iron Mountain [town], West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA

Oldest recorded age at locality: 390
Youngest recorded age at locality: 390

mindat Locality ID: 12023
mindat URL: http://www.mindat.org/loc-12023.html

Tectonic Settings: Continental Arc

Total number of sublocalities beneath "Iron Mountain Mine (Number 8; Confidence; Old Mine), Iron Mountain, Iron Mountain [town], West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Brick Flat Ore Body
Hornet Ore Body
Mattie Ore Body
Old Mine Ore Body (Old Man Ore Body)
Richmond Ore Body

Latitude: 40°40'18"N
Longitude: 122°31'39"W
Decimal Degree (lat, lon): 40.671666666667,-122.5275

AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al B C Ca Cd Cu Fe H K Mg O Pb Pt S Si Ti Zn 

Elements from minerals reported directly at this locality: Ag Al B C Ca Cd Cu Fe H O Pb Pt S Si Ti Zn 

Structural Groups for minerals in this locality: 
AluniteCalciteChalcanthiteChalcopyriteCopiapiteCopperCoquimbiteCorundumCovelliteHalotrichite
KieseriteLepidocrociteMalachiteMelanteriteNickelineNoneNot in a structural groupPyriteQuartzRocksalt
RömeriteSphaleriteSpinelStarkeyiteSulphurVoltaiteWurtzite

36 IMA Minerals at location:
Aluminocopiapite  (*)Antlerite  (*)Calcite  (*)Chalcanthite  (*)Chalcocite  (*)
Chalcopyrite  (*)Copiapite  (*)Coquimbite  (*)Covellite  (*)Galena  (*)
Greenockite  (*)Halotrichite  (*)Hematite  (*)Ilmenite  (*)Inyoite  (*)
Jarosite  (*)Kornelite  (*)Lepidocrocite  (*)Maghemite  (*)Magnesiocopiapite  (*)
Magnetite  (*)Malachite  (*)Melanterite  (*)Platinum  (*)Pyrite  (*)
Pyrrhotite  (*)Quartz  (*)Rhomboclase  (*)Römerite  (*)Rozenite  (*)
Siderotil  (*)Silver  (*)Sphalerite  (*)Sulphur  (*)Szomolnokite  (*)
Voltaite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aluminocopiapite  (*)Copiapite(Al,Mg)Fe3+4(SO4)6(OH,O)2·20H2O390390117701150
Antlerite  (*)Not in a structural groupCu2+3(SO4)(OH)43903901177010246
Calcite  (*)CalciteCa(CO3)390390027770
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O3903900925
Chalcocite  (*)NoneCu2S39039005707
Chalcopyrite  (*)ChalcopyriteCuFeS2390390027198
Copiapite  (*)CopiapiteFe2+Fe3+4(SO4)6(OH)2·20H2O3903901177011382
Coquimbite  (*)CoquimbiteAlFe3(SO4)6(H2O)12·6H2O3903901177011136
Covellite  (*)CovelliteCuS39039004165
Galena  (*)RocksaltPbS390390024243
Greenockite  (*)WurtziteCdS3903900717
Halotrichite  (*)HalotrichiteFe2+Al2(SO4)4·22H2O3903900409
Hematite  (*)CorundumFe2O3390390014640
Ilmenite  (*)CorundumFe2+Ti4+O339039005433
Inyoite  (*)NoneCaB3O3(OH)5·4H2O390390034
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)639039011770112228
Kornelite  (*)Not in a structural groupFe3+2(SO4)3·7H2O (?)390390021
Lepidocrocite  (*)LepidocrociteFe3+O(OH)3903900581
Maghemite  (*)Spinel(Fe3+0.67   0.33)Fe3+2O43903900229
Magnesiocopiapite  (*)CopiapiteMgFe3+4(SO4)6(OH)2·20H2O390390117701154
Magnetite  (*)SpinelFe2+Fe3+2O4390390014899
Malachite  (*)MalachiteCu2(CO3)(OH)2390390012537
Melanterite  (*)MelanteriteFe(SO4)·7H2O3903901177011915
Platinum  (*)CopperPt3903900485
Pyrite  (*)PyriteFeS2390390117701139462
Pyrrhotite  (*)NickelineFe7S839039009056
Quartz  (*)QuartzSiO2390390061156
Rhomboclase  (*)Not in a structural group(H5O2)Fe3+(SO4)2·2H2O390390117701153
Römerite  (*)RömeriteFe2+Fe3+2(SO4)4·14H2O3903901177011115
Rozenite  (*)StarkeyiteFe2+(SO4)·4H2O3903900293
Siderotil  (*)ChalcanthiteFe(SO4)·5H2O390390084
Silver  (*)CopperAg39039005186
Sphalerite  (*)SphaleriteZnS390390021482
Sulphur  (*)SulphurS39039002045
Szomolnokite  (*)KieseriteFe(SO4)·H2O3903901177011139
Voltaite  (*)VoltaiteK2Fe2+5Fe3+3Al(SO4)12·18H2O3903901177011111



1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
vms-01031390390Devonian       S12023Iron Mountain Mine (Number 8; Confidence; Old Mine), Iron Mountain, Iron Mountain [town], West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USAIron MountainMoiser et al. (2009) USGSOFR2009_1034 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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