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

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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:
East Belt, Tuolumne Co., California, USA

Oldest recorded age at locality: 162.5
Youngest recorded age at locality: 157.4

mindat Locality ID: 97705
mindat URL: http://www.mindat.org/loc-97705.html

Tectonic Settings:

Total number of sublocalities beneath "East Belt, Tuolumne Co., California, USA": 510
Total number of bottom-level sublocalities: 466

Number of Child Localities: 7
Child Localities:
American Camp District
Big Oak Flat District
Columbia District
Eastman Ranch
Shaws Flat District
Sonora District
Soulsbyville & Confidence District

Latitude: 37°58'40"N
Longitude: 120°18'59"W
Decimal Degree (lat, lon): 37.977777777778,-120.31638888889
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 Bi C Ca Cu Fe H Mg Mn O Pb S Sb Si Te U W Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleArsenopyriteCalciteChalcopyriteClayClinozoisiteCopperCovelliteEpidote
FluoriteGarnetMarcasiteMeloniteNickelineNoneNot in a structural groupOlivinePyritePyroxene
QuartzRhodoniteRocksaltRutileScheeliteSphaleriteStibniteTalcTetradymite

31 IMA Minerals at location:
Altaite  (*)Arsenopyrite  (*)Calcite  (*)Chalcopyrite  (*)Copper  (*)
Covellite  (*)Diopside  (*)Epidote  (*)Forsterite  (*)Galena  (*)
Gold  (*)Graphite  (*)Hessite  (*)Kyanite  (*)Marcasite  (*)
Opal  (*)Petzite  (*)Pyrite  (*)Pyrolusite  (*)Pyrrhotite  (*)
Quartz  (*)Rhodonite  (*)Scheelite  (*)Spessartine  (*)Sphalerite  (*)
Stibnite  (*)Sylvanite  (*)Talc  (*)Tetradymite  (*)Tremolite  (*)
Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Altaite  (*)RocksaltPbTe4182970,183085,183099,183105489
Arsenopyrite  (*)ArsenopyriteFeAsS11832469052
Calcite  (*)CalciteCa(CO3)2182816,18294927770
Chalcopyrite  (*)ChalcopyriteCuFeS28182850,183007,183037,183141,183142,183225,183246,18325627198
Copper  (*)CopperCu11828503846
Covellite  (*)CovelliteCuS11829094165
Diopside  (*)PyroxeneCaMgSi2O611828794135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)2183210,1832128173
Forsterite  (*)OlivineMg2(SiO4)11828791188
Galena  (*)RocksaltPbS27182818,182829,182830,182850,182864,182865,182953,183007,183037,183124,183181,183186,183190,183191,183198,183207,183208,183216,183236,183246,183254,183256,183259,183263,183270,183280,18330024243
Gold  (*)CopperAu162.5157.4196182815,182818,182821,182822,182825,182828,182829,182830,182835,182836,182841,182843,182846,182847,182849,182850,182851,182853,182855,182856,182857,182858,182862,182863,182864,182865,182866,182869,182870,182874,182875,182876,182877,182880,182882,182884,182885,182886,182892,182893,182894,182895,182896,182897,182898,182900,182913,182914,182918,182919,182922,182923,182924,182930,182931,182937,182938,182939,182953,182962,182963,182970,182975,182976,182979,182985,182986,182992,182996,183006,183007,183008,183009,183010,183014,183019,183020,183024,183027,183033,183034,183035,183037,183043,183044,183054,183068,183071,183073,183080,183083,183084,183085,183086,183089,183090,183091,183094,183095,183099,183100,183105,183108,183110,183113,183120,183123,183124,183125,183126,183129,183133,183139,183141,183142,183147,183148,183150,183151,183152,183155,183156,183157,183158,183159,183162,183166,183168,183169,183171,183172,183176,183177,183178,183181,183183,183186,183190,183191,183192,183193,183198,183199,183201,183207,183208,183215,183216,183223,183224,183228,183229,183231,183234,183236,183237,183240,183246,183247,183248,183250,183251,183253,183254,183256,183259,183260,183261,183262,183263,183265,183267,183270,183272,183275,183278,183280,183283,183285,183287,183288,183290,183291,183293,183296,183297,183298,183299,183300,183301,183302,183304,183305,183312,183313,18331430554
Graphite  (*)NoneC2182959,1829722812
Hessite  (*)NoneAg2Te1183085804
Kyanite  (*)Not in a structural groupAl2OSiO411830231507
Marcasite  (*)MarcasiteFeS26182953,182961,183124,183246,183254,1832635674
Opal  (*)AmorphousSiO2·nH2O11829052994
Petzite  (*)NoneAg3AuTe23182939,183072,183085409
Pyrite  (*)PyriteFeS225182818,182829,182830,182856,182857,182864,182865,182900,182953,183007,183037,183124,183141,183142,183190,183207,183208,183210,183216,183246,183256,183259,183263,183270,18330039462
Pyrolusite  (*)RutileMnO23182911,182937,1829673106
Pyrrhotite  (*)NickelineFe7S89182953,183124,183181,183191,183210,183246,183254,183256,1832639056
Quartz  (*)QuartzSiO241182841,182846,182847,182849,182850,182857,182863,182865,182875,182876,182884,182886,182892,182893,182895,182896,182897,182913,182918,182919,182922,182923,182933,182939,182953,182962,183089,183120,183124,183151,183152,183158,183166,183210,183229,183246,183256,183263,183280,183288,18329161156
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)6182809,182911,182933,182937,182967,183309969
Scheelite  (*)ScheeliteCa(WO4)11832104894
Spessartine  (*)GarnetMn2+3Al2(SiO4)34182816,182911,183307,1833091214
Sphalerite  (*)SphaleriteZnS16182818,182829,182830,182850,182953,183037,183124,183181,183186,183191,183207,183236,183246,183254,183256,18326321482
Stibnite  (*)StibniteSb2S311830373418
Sylvanite  (*)MeloniteAgAuTe41182939337
Talc  (*)Clay TalcMg3Si4O10(OH)23182857,183070,1833083337
Tetradymite  (*)TetradymiteBi2Te2S1183256510
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)211829492562
Uraninite  (*)FluoriteUO211829202718


2 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
USGS-U-Th-Pb-00882_206_238162.5162.5162.5206_238 zircon   Zircon  97655Contact Mine, Big Oak Flat, Big Oak Flat District, East Belt, Tuolumne Co., California, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00882_207_235157.4157.4157.4207_235 zircon   Zircon  97655Contact Mine, Big Oak Flat, Big Oak Flat District, East Belt, Tuolumne Co., California, USA USGS-U-Th-Pb USGS-U-Th-Pb 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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