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:
Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA

Oldest recorded age at locality: 172
Youngest recorded age at locality: 0

mindat Locality ID: 229400
mindat URL: http://www.mindat.org/loc-229400.html

Tectonic Settings:

Total number of sublocalities beneath "Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Brown Prospect
Elliott Prospect (Elliot Prospect)
Gunn Claim
Little Falls Deposit
Old Dough Claim

Latitude: 38°52'19"N
Longitude: 122°48'53"W
Decimal Degree (lat, lon): 38.871944444444,-122.81472222222

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: Cr Fe Mn O 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
NoneRutileSpinel

2 IMA Minerals at location:
Chromite  (*)Pyrolusite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Chromite  (*)SpinelFe2+Cr2O42.9011606453902
Pyrolusite  (*)RutileMnO22.9011606463106



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
Hg-001102.90 ?-?    YesCinnabar, Mercury, Metacinnabar, Schuetteite, TiemanniteHg80795East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA Smith et al. (2008)10.1016/j.epsl.2008.02.029EPSL269_399 
NAVDAT-1303841.681.641.66±0.02   130384    229400Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA NAVDAT NAVDAT 
podchrome-00325172166Middle Jurassic (169±3 U-Pb, zircon in plagiogranite)  zircon   Zircon Cr80817Gunn Claim, Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USAGunn ClaimsMoiser et al. (2012) USGSSIR2012_5157 


SampleSource LocalityReference URL


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