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:
Admiralty District, Juneau, Alaska, USA

Oldest recorded age at locality: 252
Youngest recorded age at locality: 201

mindat Locality ID: 203075
mindat URL: http://www.mindat.org/loc-203075.html

Tectonic Settings:

Total number of sublocalities beneath "Admiralty District, Juneau, Alaska, USA": 10
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
Baldy Mountain Prospect
Greens Creek (Big Sore Mine)
Little Sore; Tom Prospect
Mammoth Prospect
Tom Prospect
Unnamed Occurrence (ARDF - JU247; Near Greens Creek)
Unnamed Occurrence (ARDF - JU249; East Of Mouth Of Hawk Inlet)
Unnamed Occurrence (ARDF - JU251; West End Of 'Mariposite Ridge')
Unnamed Occurrence (ARDF - JU252; Near Greens Creek)
Unnamed Prospect (ARDF - JU255; Near Pt. Marsden)

Latitude: 58°3'3"N
Longitude: 134°37'26"W
Decimal Degree (lat, lon): 58.050833333333,-134.62388888889
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 Au Ba C Ca Cu Fe Ge H K Mg O Pb S Sb Si Sn Ti Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AcanthiteAllargentumArgyroditeArsenopyriteBaryteCalciteChalcopyriteClayClinozoisiteCopper
CorundumCovelliteEpidoteFeldsparGeocroniteJalpaiteMarcasiteMicaNonePolybasite
PyriteQuartzRocksaltRutileSphaleriteTetrahedrite

41 IMA Minerals at location:
Acanthite  (*)Argyrodite  (*)Arsenopyrite  (*)Baryte  (*)Bornite  (*)
Boulangerite  (*)Calcite  (*)Cassiterite  (*)Celsian  (*)Chalcocite  (*)
Chalcopyrite  (*)Covellite  (*)Dolomite  (*)Dyscrasite  (*)Epidote  (*)
Freibergite  (*)Galena  (*)Geocronite  (*)Gold  (*)Graphite  (*)
Ilmenite  (*)Jalpaite  (*)Jordanite  (*)Magnesite  (*)Marcasite  (*)
Mckinstryite  (*)Muscovite  (*)Pearceite  (*)Polybasite  (*)Proustite  (*)
Pyrargyrite  (*)Pyrite  (*)Quartz  (*)Realgar  (*)Rutile  (*)
Silver  (*)Sphalerite  (*)Stephanite  (*)Stromeyerite  (*)Tennantite-(Fe)  (*)
Tetrahedrite-(Zn)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S25220111302462793
Argyrodite  (*)ArgyroditeAg8GeS6252201113024662
Arsenopyrite  (*)ArsenopyriteFeAsS25220111302469052
Baryte  (*)BaryteBa(SO4)252201113024611547
Bornite  (*)NoneCu5FeS425220111302465516
Boulangerite  (*)NonePb5Sb4S112522011130246843
Calcite  (*)CalciteCa(CO3)2522013130246,130248,13025227770
Cassiterite  (*)RutileSnO225220111302465171
Celsian  (*)FeldsparBa(Al2Si2O8)2522011130246100
Chalcocite  (*)NoneCu2S25220111302465707
Chalcopyrite  (*)ChalcopyriteCuFeS2252201113024627198
Covellite  (*)CovelliteCuS25220111302464165
Dolomite  (*)NoneCaMg(CO3)225220111302469895
Dyscrasite  (*)AllargentumAg3+xSb1-x (x ≈ 0.2)2522011130246180
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)25220111302468173
Freibergite  (*)TetrahedriteAg6[Cu4Fe2]Sb4S122522011130246663
Galena  (*)RocksaltPbS2522012130246,13024824243
Geocronite  (*)GeocronitePb14Sb6S232522011130246133
Gold  (*)CopperAu252201113024630554
Graphite  (*)NoneC25220111302462812
Ilmenite  (*)CorundumFe2+Ti4+O325220111302465433
Jalpaite  (*)JalpaiteAg3CuS22522011130246116
Jordanite  (*)GeocronitePb14As6S232522011130246105
Magnesite  (*)CalciteMg(CO3)25220111302461487
Marcasite  (*)MarcasiteFeS225220111302465674
Mckinstryite  (*)NoneAg5Cu3S4252201113024651
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)22522014130246,130248,130251,13025217380
Pearceite  (*)Polybasite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]2522011130246249
Polybasite  (*)Polybasite[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]2522011130246716
Proustite  (*)NoneAg3AsS32522011130246733
Pyrargyrite  (*)NoneAg3SbS325220111302461425
Pyrite  (*)PyriteFeS22522014130246,130248,130251,13025339462
Quartz  (*)QuartzSiO22522014130246,130248,130251,13025261156
Realgar  (*)NoneAsS2522011130246712
Rutile  (*)RutileTiO225220111302465614
Silver  (*)CopperAg25220111302465186
Sphalerite  (*)SphaleriteZnS2522012130246,13024821482
Stephanite  (*)NoneAg5SbS42522011130246586
Stromeyerite  (*)NoneCuAgS2522011130246332
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S1325220111302461803
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S132522012130246,1302485317


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-00992252201Triassic        11520Greens Creek (Big Sore Mine), Admiralty District, Juneau, Alaska, USAGreens CreekMoiser et al. (2009) USGSOFR2009-1034 

SampleSource LocalityReference URL

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