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:
Placerville District, Lower San Miguel District, San Miguel Co., Colorado, USA


mindat Locality ID: 23250
mindat URL: http://www.mindat.org/loc-23250.html

Tectonic Settings:

Total number of sublocalities beneath "Placerville District, Lower San Miguel District, San Miguel Co., Colorado, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Black King Mine (Black King No. 4; Black King No. 5; Black King No. 5 Claim; Unpatented Claims: Black King No. 1; Evans Claims; Weatherly Claims)
New Discovery (Barbara Jo Claim; White Spur; White Spar)
Robinson Property

Latitude: 38°0'3"N
Longitude: 108°3'10"W
Decimal Degree (lat, lon): 38.000833333333,-108.05277777778
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 Co Cu Fe H K Mo Ni O P Pb S Sb Si U V Zn 

Elements from minerals reported directly at this locality: Al Ca Fe H K Mo O S Si U V 

Structural Groups for minerals in this locality: 
AmorphousAutuniteBaryteCalciteChalcopyriteClayCopperDiasporeFluoriteMalachite
MicaMolybdeniteNoneNot in a structural groupPerovskitePyriteQuartzRocksaltSkutteruditeSphalerite
TetrahedriteVivianiteZircon

32 IMA Minerals at location:
Annabergite  (*)Autunite  (*)Azurite  (*)Baryte  (*)Bornite  (*)
Calcite  (*)Carnotite  (*)Chalcocite  (*)Chalcopyrite  (*)Coffinite  (*)
Erythrite  (*)Ferrimolybdite  (*)Galena  (*)Gold  (*)Ilsemannite  (*)
Jordisite  (*)Malachite  (*)Metatorbernite  (*)Molybdenite  (*)Montroseite  (*)
Muscovite  (*)Pyrite  (*)Quartz  (*)Roscoelite  (*)Silver  (*)
Skutterudite  (*)Sphalerite  (*)Tennantite-(Fe)  (*)Tetrahedrite-(Zn)  (*)Tyuyamunite  (*)
Uraninite  (*)Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Annabergite  (*)VivianiteNi3(AsO4)2·8H2O1196741445
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O11967411272
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)22196741,1967435509
Baryte  (*)BaryteBa(SO4)2196741,19674311547
Bornite  (*)NoneCu5FeS411967435516
Calcite  (*)CalciteCa(CO3)2196741,19674327770
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O01184
Chalcocite  (*)NoneCu2S11967415707
Chalcopyrite  (*)ChalcopyriteCuFeS22196741,19674327198
Coffinite  (*)ZirconU(SiO4)·nH2O2196741,196743566
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O1196741814
Ferrimolybdite  (*)NoneFe3+2(Mo6+O4)3·7H2O0345
Galena  (*)RocksaltPbS2196741,19674324243
Gold  (*)CopperAu119674130554
Ilsemannite  (*)NoneMo3O8·nH2O (?)1196741123
Jordisite  (*)AmorphousMoS21196741102
Malachite  (*)MalachiteCu2(CO3)(OH)22196741,19674312537
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O1196741443
Molybdenite  (*)MolybdeniteMoS211967415800
Montroseite  (*)Diaspore(V3+,Fe2+,V4+)O(OH)0136
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2017380
Pyrite  (*)PyriteFeS2039462
Quartz  (*)QuartzSiO2119674361156
Roscoelite  (*)MicaKV3+2(Si3Al)O10(OH)20253
Silver  (*)CopperAg11967415186
Skutterudite  (*)Skutterudite PerovskiteCoAs31196741531
Sphalerite  (*)SphaleriteZnS119674321482
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S1311967431803
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S132196741,1967435317
Tyuyamunite  (*)NoneCa(UO2)2(VO4)2·5-8H2O0628
Uraninite  (*)FluoriteUO23196741,196742,1967432718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O1196741890


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...