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:
Humboldt Mine (Edwards Mine), Humboldt Township, Marquette Iron Range, Marquette Co., Michigan, USA


mindat Locality ID: 72747
mindat URL: http://www.mindat.org/loc-72747.html

Tectonic Settings:

Total number of sublocalities beneath "Humboldt Mine (Edwards Mine), Humboldt Township, Marquette Iron Range, Marquette Co., Michigan, USA": 0
Total number of bottom-level sublocalities: 0

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 Ca Fe H Mg Mo Na O S Si 

Elements from minerals reported directly at this locality: Al B Ca Fe H Mg Mo Na O S Si 

Structural Groups for minerals in this locality: 
AmphiboleChloritoidClayCorundumDiasporeGarnetMicaMolybdeniteNoneQuartz
SpinelTalcTourmaline

13 IMA Minerals at location:
Actinolite  (*)Almandine  (*)Chloritoid  (*)Goethite  (*)Hematite  (*)
Magnetite  (*)Molybdenite  (*)Paragonite  (*)Quartz  (*)Riebeckite  (*)
Schorl  (*)Talc  (*)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)203419
Almandine  (*)GarnetFe2+3Al2(SiO4)302353
Chloritoid  (*)ChloritoidFe2+Al2O(SiO4)(OH)20376
Goethite  (*)DiasporeFeO(OH)07437
Hematite  (*)CorundumFe2O3014640
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Molybdenite  (*)MolybdeniteMoS205800
Paragonite  (*)Mica ClayNaAl2(Si3Al)O10(OH)20247
Quartz  (*)QuartzSiO2061156
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)20375
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)02705
Talc  (*)Clay TalcMg3Si4O10(OH)203337
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)202562


No ages have been assigned to this locality yet.
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