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

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.




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:
Humboldt Township, Marquette Iron Range, Marquette Co., Michigan, USA


mindat Locality ID: 213943
mindat URL: http://www.mindat.org/loc-213943.html

Tectonic Settings:

Total number of sublocalities beneath "Humboldt Township, Marquette Iron Range, Marquette Co., Michigan, USA": 9
Total number of bottom-level sublocalities: 9

Number of Child Localities: 9
Child Localities:
Barron Mine
Bessie Mine
Humboldt Mine (Edwards Mine)
Humboldt Train Station
Mount Humboldt
Unnamed Outcrop
Unnamed Outcrop (2)
Unnamed Outcrop (3)
Unnamed Outcrop (4)

Latitude: 46°29'2"N
Longitude: 87°53'54"W
Decimal Degree (lat, lon): 46.483888888889,-87.898333333333

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: Al B Ba C Ca Ce F Fe H K Mg Mo Na Nb O P S Si Sn Ta Th Ti U Y 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleApatiteBaryteCalciteChloritoidClayColumbiteCorundumDiasporeFeldspar
FluoriteGarnetMarcasiteMicaMolybdeniteNonePyriteQuartzRutileSpinel
TalcTopazTourmalineZircon

31 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Baryte  (*)Calcite  (*)
Cassiterite  (*)Chloritoid  (*)Columbite-(Fe)  (*)Dolomite  (*)Euxenite-(Y)  (*)
Fluorapatite  (*)Fluorite  (*)Goethite  (*)Graphite  (*)Grunerite  (*)
Hematite  (*)Ilmenite  (*)Magnetite  (*)Marcasite  (*)Molybdenite  (*)
Muscovite  (*)Paragonite  (*)Pyrite  (*)Quartz  (*)Riebeckite  (*)
Rutile  (*)Schorl  (*)Talc  (*)Thorite  (*)Topaz  (*)
Tremolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)212222453419
Albite  (*)FeldsparNa(AlSi3O8)12222498803
Almandine  (*)GarnetFe2+3Al2(SiO4)32222245,2222502353
Baryte  (*)BaryteBa(SO4)122224311547
Calcite  (*)CalciteCa(CO3)3222244,222247,22224827770
Cassiterite  (*)RutileSnO212222495171
Chloritoid  (*)ChloritoidFe2+Al2O(SiO4)(OH)23222245,222246,222248376
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O61222249518
Dolomite  (*)NoneCaMg(CO3)212222449895
Euxenite-(Y)  (*)ColumbiteY(NbTi)O61222249414
Fluorapatite  (*)ApatiteCa5(PO4)3F12222442740
Fluorite  (*)FluoriteCaF212222499617
Goethite  (*)DiasporeFeO(OH)2222244,2222457437
Graphite  (*)NoneC12222442812
Grunerite  (*)Amphibole   Fe2+2Fe2+5Si8O22(OH)22222247,222251223
Hematite  (*)CorundumFe2O32222244,22224514640
Ilmenite  (*)CorundumFe2+Ti4+O312222465433
Magnetite  (*)SpinelFe2+Fe3+2O44222244,222245,222246,22224714899
Marcasite  (*)MarcasiteFeS212222445674
Molybdenite  (*)MolybdeniteMoS22222245,2222495800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)23222246,222248,22225017380
Paragonite  (*)Mica ClayNaAl2(Si3Al)O10(OH)21222245247
Pyrite  (*)PyriteFeS2122224439462
Quartz  (*)QuartzSiO26222244,222245,222246,222247,222248,22225161156
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)21222245375
Rutile  (*)RutileTiO212222465614
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)12222452705
Talc  (*)Clay TalcMg3Si4O10(OH)212222453337
Thorite  (*)ZirconTh(SiO4)12222491006
Topaz  (*)TopazAl2SiO4F212222491476
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)212222452562



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...