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:
Coarsegold District (includes Former Potter Ridge District), Madera Co., California, USA

Oldest recorded age at locality: 116
Youngest recorded age at locality: 102.2

mindat Locality ID: 249028
mindat URL: http://www.mindat.org/loc-249028.html

Tectonic Settings:

Total number of sublocalities beneath "Coarsegold District (includes Former Potter Ridge District), Madera Co., California, USA": 57
Total number of bottom-level sublocalities: 53

Number of Child Localities: 3
Child Localities:
Coarsegold
Deadwood Peak
Potter Ridge

Latitude: 37°17'57"N
Longitude: 119°42'34"W
Decimal Degree (lat, lon): 37.299166666667,-119.70944444444
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 C Ca Fe H Mg Mn O Si Ti W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleCalciteClayClinozoisiteCopperEpidoteGarnetNoneQuartzRhodonite
RutileScheeliteTalcTitanite

12 IMA Minerals at location:
Actinolite  (*)Epidote  (*)Gold  (*)Manganite  (*)Pyrolusite  (*)
Quartz  (*)Rhodochrosite  (*)Rhodonite  (*)Scheelite  (*)Spessartine  (*)
Talc  (*)Titanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)211611211620123419
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11611211620138173
Gold  (*)CopperAu11611235161990,161991,161992,161994,161995,161998,161999,162000,162001,162002,162003,162007,162008,162009,162010,162011,162014,162016,162018,162020,162021,162023,162026,162027,162028,162029,162034,162036,162037,162038,162041,162042,162043,162044,16204530554
Manganite  (*)RutileMn3+O(OH)1161121162013770
Pyrolusite  (*)RutileMnO211611211620133106
Quartz  (*)QuartzSiO211611230161991,161992,161994,161995,161998,161999,162000,162001,162002,162003,162007,162008,162010,162011,162014,162016,162018,162021,162023,162026,162029,162034,162036,162037,162038,162041,162042,162043,162044,16204561156
Rhodochrosite  (*)CalciteMn(CO3)11611211620131711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)116102.23162013,162015,162040969
Scheelite  (*)ScheeliteCa(WO4)11620244894
Spessartine  (*)GarnetMn2+3Al2(SiO4)3116102.22162015,1620401214
Talc  (*)Clay TalcMg3Si4O10(OH)211611211620143337
Titanite  (*)TitaniteCaTi(SiO4)O11611211620124899


3 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
NAVDAT-37794116112114±2   37794    203921Coarsegold, Coarsegold District (includes Former Potter Ridge District), Madera Co., California, USA NAVDAT NAVDAT 
USGS-U-Th-Pb-00899_206_238108.2108.2108.2206_238 zircon   Zircon  81681Krohn Prospect, Potter Ridge, Coarsegold District (includes Former Potter Ridge District), Madera Co., California, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00899_207_235102.2102.2102.2207_235 zircon   Zircon  81681Krohn Prospect, Potter Ridge, Coarsegold District (includes Former Potter Ridge District), Madera 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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