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:
Groveland, Big Oak Flat District, East Belt, Tuolumne Co., California, USA


mindat Locality ID: 97814
mindat URL: http://www.mindat.org/loc-97814.html

Tectonic Settings:

Total number of sublocalities beneath "Groveland, Big Oak Flat District, East Belt, Tuolumne Co., California, USA": 30
Total number of bottom-level sublocalities: 30

Number of Child Localities: 30
Child Localities:
Boitano Mine (Boitano Ranch)
Cons Occurrence (De Ferrari; Diamond)
Cosmopolite & Violet Mine
Del Monte Mine
Duleek Nos. 1; 2; 3 Mine (Duleek Mine; Duleek No. 1-3)
Ellen Winton Mine
Gold Run Lode
Goldship-Mayflower Mine (Gold Grain; Gold Ship; Corn Belt)
Good Luck Occurrence [1]
Judy Girl Mine
Kanaka Mine
La Guria Mine
La Preciosa Mine
Miracle Mine
Mount Jefferson Mine (Mt Jefferson Mine)
Mount Zion Mine
Muller Placer
Nonsma Occurrence
Philadelphia Group (Boston Rhode Island; Martin Mine)
Pine Mountain Quarry
Pipe Dream Claim
Reported Gypsum Occurrence [1]
Russell Telegraph Mine
Sampson Lode Prospect
San Francisco Mine
Sargent Placer
Unnamed Cu Occurrence [2]
Unspecified Cu Occurrence [1]
Widewest Mine (Wide West ?)
Wonder Deposit

Latitude: 37°51'3"N
Longitude: 120°13'19"W
Decimal Degree (lat, lon): 37.850833333333,-120.22194444444
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 Au Cu Fe H Mn O S Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousCopperCovelliteGarnetNonePyriteQuartzRhodoniteRutile

8 IMA Minerals at location:
Covellite  (*)Gold  (*)Opal  (*)Pyrite  (*)Pyrolusite  (*)
Quartz  (*)Rhodonite  (*)Spessartine  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Covellite  (*)CovelliteCuS11829094165
Gold  (*)CopperAu12182882,182884,182885,182886,182892,182893,182894,182895,182896,182897,182898,18290030554
Opal  (*)AmorphousSiO2·nH2O11829052994
Pyrite  (*)PyriteFeS2118290039462
Pyrolusite  (*)RutileMnO211829113106
Quartz  (*)QuartzSiO27182884,182886,182892,182893,182895,182896,18289761156
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)1182911969
Spessartine  (*)GarnetMn2+3Al2(SiO4)311829111214


No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...

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