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:
Cool, El Dorado Co., California, USA


mindat Locality ID: 215190
mindat URL: http://www.mindat.org/loc-215190.html

Tectonic Settings:

Total number of sublocalities beneath "Cool, El Dorado Co., California, USA": 22
Total number of bottom-level sublocalities: 22

Number of Child Localities: 22
Child Localities:
Blue Marble Quarry
Cool-Cave Valley Quarry (Cowell-Cave Valley; Ideal Cement)
Crystal Mine [1]
Diamond Springs Quarry [2]
Flint Extension Placer
Gold Slide Placer
Great Cravia Placer (Great Crevis)
Indicator; S.W.H.; And Martha L. Claims
J. A. Mendes Placer
Lukens Mine (Lukens Gold Mine)
Mammoth Bar River Placer (Mamoth Bar River Placer)
Mooney Flat Placer
Murderers Bar Placer
Pony Mine
Robert B. Henderson Occurrence
Rocky Point Placer
S. L. Hunt Mine
Unnamed Au-Ag Occurrence [1]
Unnamed Placer PGE Occurrence [1]
Unnamed Stone Quarry [2] (Quarry 2)
West Cool-Cave Valley Deposit
Wilhelm And Last Chance Mine

Latitude: 38°53'54"N
Longitude: 121°1'19"W
Decimal Degree (lat, lon): 38.898333333333,-121.02194444444

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: Au Cu Fe Ir O Pt S Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ChalcopyriteCopperNoneQuartz

5 IMA Minerals at location:
Chalcopyrite  (*)Gold  (*)Iridium  (*)Platinum  (*)Quartz  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Chalcopyrite  (*)ChalcopyriteCuFeS2115412327198
Gold  (*)CopperAu6154123,154130,154131,154134,154137,15414230554
Iridium  (*)CopperIr1154139162
Platinum  (*)CopperPt1154139485
Quartz  (*)QuartzSiO24154123,154134,154137,15414261156



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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