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:
Sheep Ranch, Mountain Ranch District, East Belt, Calaveras Co., California, USA

Oldest recorded age at locality: 100
Youngest recorded age at locality: 100

mindat Locality ID: 217190
mindat URL: http://www.mindat.org/loc-217190.html

Tectonic Settings:

Total number of sublocalities beneath "Sheep Ranch, Mountain Ranch District, East Belt, Calaveras Co., California, USA": 39
Total number of bottom-level sublocalities: 39

Number of Child Localities: 39
Child Localities:
Admiral Dewey Mine
Alta No. 3 Mine (Altar No. 3 Mine)
Bon Ton Mine
Brassila Placer
Bullion Mine
Caruthers Mine
Chavanne Mine
Cooper And Hercules Occurrence
Dollar Et Al Claims
Finian Mine
First Chance Mine [1]
Florence Claim
Golden Bell Mine
Golden Eagle Occurrence
Golden Reef Mine
Golden West Mine (Talcose Claim; West Talcose Claim; Minetyseven Claim)
Grouch M. J. Martin And C. Shaw Occurrence
Hercules Occurrence
Hurricane Mine
Jenkins Mine
Kidoo Mine
Line Stone And Mohawk Placer
Lodi Mine
Lost Boy Mine
Mar John Prospect (Mar John Mine; Marjon; Old Calaveras Group; Calaveras; Enchantress; Oro Minto)
Moosehead Placer
Mutt Occurrence
Ohio Mine [2]
Pescia Prospect (Pescia Deposit)
Right Bower Mine (Western; Great Western)
Round Butte Placer
Sheep Ranch Mine (Washington Mine; Wallace And Ferguson Mine; Chavanne Mine; Pioche Mine; American Mine; Chavanne Claim; Wallace Claim; McNair Claim; Location Claim; Aspinwall Claim; Northstarv Claim; Salamanda Claim; Admiral Dewey Claim; Rosco Claim; Ala
Soapstone Mine (Soapstone Claim)
Sonoma Occurrence
Tandee Mine (H. H. Tandee Property)
Tom Smith Mine
Toon Mine
Unspecified Tourmaline Occurrence [1]
Zurcher Mine (Zurcher Prospect; Zurcher Property; Quarry No. 1)

Latitude: 38°11'53"N
Longitude: 120°28'4"W
Decimal Degree (lat, lon): 38.198055555556,-120.46777777778

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 As Au C Co Cu Fe H Mn O Pb S Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ArsenopyriteChalcopyriteCopperGarnetNonePerovskitePyriteQuartzRhodoniteRocksalt
SkutteruditeSphaleriteVivianite

12 IMA Minerals at location:
Arsenopyrite  (*)Chalcopyrite  (*)Erythrite  (*)Galena  (*)Gold  (*)
Graphite  (*)Pyrite  (*)Quartz  (*)Rhodonite  (*)Skutterudite  (*)
Spessartine  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS10010011522889052
Chalcopyrite  (*)ChalcopyriteCuFeS2100100115229327198
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O1001001152288814
Galena  (*)RocksaltPbS1001002152288,15229324243
Gold  (*)CopperAu10010030152264,152265,152266,152267,152268,152269,152270,152271,152272,152273,152274,152275,152276,152278,152279,152280,152282,152283,152285,152287,152288,152289,152290,152291,152293,152294,152295,152298,152299,15230030554
Graphite  (*)NoneC10010011522932812
Pyrite  (*)PyriteFeS21001002152288,15229339462
Quartz  (*)QuartzSiO210010019152264,152265,152266,152268,152273,152274,152275,152276,152278,152279,152282,152283,152287,152288,152291,152293,152298,152299,15230061156
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)1001001152292969
Skutterudite  (*)Skutterudite PerovskiteCoAs31001001152288531
Spessartine  (*)GarnetMn2+3Al2(SiO4)31001003152292,152296,1523021214
Sphalerite  (*)SphaleriteZnS100100115228821482



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-00156100100      YesMolybdeniteMo16293Calaveras Co., California, USACalaveras CountyBrock (1972)10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2GSAB83_3391 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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