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:
Phoenix, Keweenaw Co., Michigan, USA

Oldest recorded age at locality: 1060
Youngest recorded age at locality: 1047

mindat Locality ID: 24224
mindat URL: http://www.mindat.org/loc-24224.html

Tectonic Settings:

Total number of sublocalities beneath "Phoenix, Keweenaw Co., Michigan, USA": 19
Total number of bottom-level sublocalities: 18

Number of Child Localities: 18
Child Localities:
Babbitt Fissure
Bay State Fissure Mine
Cliff Mine
Eagle River Mine
Garden City Mine
Lake Superior Mine
Meadow Mine
Miskwabic Exploration Prospect
Natick Gap Exploration Prospect
North American Mine
North Cliff
North Cliff Mine
Phoenix Mine
Robbins Mine
South Cliff Mine
St. Clair Mine
Vaughnsville Exploration Prospect
West Vein Mine

Latitude: 47°23'11"N
Longitude: 88°17'19"W
Decimal Degree (lat, lon): 47.386388888889,-88.288611111111

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 As B Ba C Ca Cl Cu F Fe H K Mg Na O Pb S Si Ti Zn 

Elements from minerals reported directly at this locality: Ca Fe Mg O Si 

Structural Groups for minerals in this locality: 
AcanthiteAllophaneAnalcimeApophylliteAtacamiteBaryteCalciteChalcopyriteChloriteClay
ClinozoisiteCopperCorundumCovelliteDigeniteDomeykiteEpidoteFeldsparGadoliniteGypsum
MalachiteNatroliteNoneNot in a structural groupPrehnitePumpellyitePyritePyroxeneQuartzRhodonite
RocksaltSphaleriteSpinelThomsoniteWollastonite

44 IMA Minerals at location:
Acanthite  (*)Albite  (*)Analcime  (*)Anhydrite  (*)Ankerite  (*)
Atacamite  (*)Augite  (*)Azurite  (*)Babingtonite  (*)Baryte  (*)
Calcite  (*)Chalcocite  (*)Chalcopyrite  (*)Chamosite  (*)Chrysocolla  (*)
Clinochlore  (*)Copper  (*)Covellite  (*)Cuprite  (*)Datolite  (*)
Digenite  (*)Dolomite  (*)Domeykite  (*)Epidote  (*)Fluorapophyllite-(K)  (*)
Galena  (*)Gypsum  (*)Hematite  (*)Ilmenite  (*)Kinoite  (*)
Laumontite  (*)Magnetite  (*)Malachite  (*)Microcline  (*)Natrolite  (*)
Prehnite  (*)Pumpellyite-(Mg)  (*)Pyrite  (*)Quartz  (*)Silver  (*)
Sphalerite  (*)Tenorite  (*)Thomsonite-Ca  (*)Wollastonite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S1060104712219522793
Albite  (*)FeldsparNa(AlSi3O8)1060104712219528803
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O106010476221952,221955,221956,221962,221963,2219661627
Anhydrite  (*)Not in a structural groupCa(SO4)1060104712219521588
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)2106010472221952,2219633092
Atacamite  (*)AtacamiteCu2Cl(OH)3106010471221963544
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O61060104702060
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)2106010472221952,2219625509
Babingtonite  (*)RhodoniteCa2Fe2+Fe3+Si5O14(OH)106010473221950,221952,221963161
Baryte  (*)BaryteBa(SO4)106010474221952,221953,221963,22196811547
Calcite  (*)CalciteCa(CO3)1060104710221952,221953,221954,221956,221957,221960,221963,221965,221966,22196827770
Chalcocite  (*)NoneCu2S106010472221952,2219535707
Chalcopyrite  (*)ChalcopyriteCuFeS210601047122195227198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8106010471221952577
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O106010472221952,2219633531
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)81060104712219521756
Copper  (*)CopperCu1060104719221950,221951,221952,221953,221954,221955,221956,221957,221958,221959,221960,221961,221962,221963,221964,221965,221966,221967,2219683846
Covellite  (*)CovelliteCuS1060104712219524165
Cuprite  (*)Not in a structural groupCu2O106010473221952,221962,2219632970
Datolite  (*)GadoliniteCaB(SiO4)(OH)106010475221952,221956,221962,221963,221966498
Digenite  (*)DigeniteCu1.8S1060104712219521027
Dolomite  (*)NoneCaMg(CO3)21060104712219639895
Domeykite  (*)DomeykiteCu3As106010472221952,22196373
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)106010477221952,221956,221957,221960,221963,221965,2219688173
Fluorapophyllite-(K)  (*)ApophylliteKCa4Si8O20F·8H2O106010476221952,221960,221962,221963,221964,221968303
Galena  (*)RocksaltPbS106010472221952,22196524243
Gypsum  (*)GypsumCa(SO4)·2H2O1060104712219526890
Hematite  (*)CorundumFe2O3106010473221952,221953,22196314640
Ilmenite  (*)CorundumFe2+Ti4+O31060104712219525433
Kinoite  (*)NoneCa2Cu2Si3O10·2H2O10601047122196517
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O106010479221952,221956,221957,221960,221962,221963,221965,221966,2219681271
Magnetite  (*)SpinelFe2+Fe3+2O410601047122195214899
Malachite  (*)MalachiteCu2(CO3)(OH)2106010475221952,221956,221962,221966,22196812537
Microcline  (*)FeldsparK(AlSi3O8)106010472221952,2219634924
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O106010474221952,221955,221963,2219661236
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)21060104711221952,221953,221954,221956,221957,221960,221962,221963,221965,221966,2219681898
Pumpellyite-(Mg)  (*)PumpellyiteCa2MgAl2(Si2O7)(SiO4)(OH)2·H2O106010474221952,221963,221966,221968106
Pyrite  (*)PyriteFeS2106010472221952,22196539462
Quartz  (*)QuartzSiO2106010477221952,221956,221957,221960,221963,221966,22196861156
Silver  (*)CopperAg106010475221952,221962,221963,221965,2219665186
Sphalerite  (*)SphaleriteZnS106010472221952,22196521482
Tenorite  (*)NoneCuO106010473221952,221963,2219661101
Thomsonite-Ca  (*)ThomsoniteNaCa2(Al5Si5)O20·6H2O106010471221952452
Wollastonite  (*)WollastoniteCaSiO31060104712219521247



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
Mo-0005710601047 Rb-Sr    YesKamiokiteMo3847Keweenaw Co., Michigan, USA Bornhorst et al. (1988)10.2113/gsecongeo.83.3.619EG83_619 


SampleSource LocalityReference URL


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