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:
Cactus Peak, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA

Oldest recorded age at locality: 99
Youngest recorded age at locality: 0.054

mindat Locality ID: 256019
mindat URL: http://www.mindat.org/loc-256019.html

Tectonic Settings:

Total number of sublocalities beneath "Cactus Peak, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Caso Pumice Mine
Coso Molybdenite Mine (Coso Molybdenite Claim)
Donna Pumice Group Nos. 1-4
Ray Gill Group (Ray Gill No. 7 Claim; Ray Gill No. 31 Claim; Ray Gill No. 53 Claim)
Unnamed Pumice Prospect [7]

Latitude: 36°5'40"N
Longitude: 117°51'7"W
Decimal Degree (lat, lon): 36.094444444444,-117.85194444444

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: Mo S 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
MolybdeniteNone

1 IMA Minerals at location:
Molybdenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Molybdenite  (*)MolybdeniteMoS2990.05411572645800



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Michelle_452Granite of the Cactus Point pluton, Hwy. 180, 1.6 km NE of Ash Mountain Park Headquarters See Table A1.


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
Michelle_4529980<99U-PbPreferred intrusive agezircon57  Zircon  256019Cactus Peak, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USACactus Point plutonChen and Moore (1982)10.1029/JB087iB06p04761AJS299_93See p. 4768, Table 2. Age group LK (Late Cretaceous 80-100 ma).
NAVDAT-183413.963.243.6±0.36   18341    78618Caso Pumice Mine, Cactus Peak, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA NAVDAT NAVDAT 
NAVDAT-1311880.0720.0540.063±0.009   131188    79639Unnamed Pumice Prospect [7], Cactus Peak, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA NAVDAT NAVDAT 


SampleSource LocalityReference URL


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