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:
Clear Creek Area, Picacho Peak, New Idria District, Diablo Range, San Benito Co., California, USA

Oldest recorded age at locality: 5.3
Youngest recorded age at locality: 0

mindat Locality ID: 27173
mindat URL: http://www.mindat.org/loc-27173.html

Tectonic Settings:

Total number of sublocalities beneath "Clear Creek Area, Picacho Peak, New Idria District, Diablo Range, San Benito Co., California, USA": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Hernandez
MT Jeanne's Pit No. 2
Unspecified Actinolite Occurrence [1]

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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 Ca Cr Fe H Hg Mg Na O Si Ti Zr 

Elements from minerals reported directly at this locality: Al Ca Fe H Hg Mg Na O Si Ti Zr 

Structural Groups for minerals in this locality: 
AmphiboleClayClinozoisiteEpidoteGarnetLawsoniteNonePyroxeneQuartzRutile
Smectite-vermiculiteSpinelTitaniteZircon

16 IMA Minerals at location:
Actinolite  (*)Andradite  (*)Chromite  (*)Diopside  (*)Epidote  (*)
Glaucophane  (*)Jadeite  (*)Lawsonite  (*)Mercury  (*)Montroydite  (*)
Omphacite  (*)Quartz  (*)Rutile  (*)Titanite  (*)Vermiculite  (*)
Zircon  (*)
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)25.3011701873419
Andradite  (*)GarnetCa3Fe3+2(SiO4)35.3011701861534
Chromite  (*)SpinelFe2+Cr2O45.3011701853902
Diopside  (*)PyroxeneCaMgSi2O65.3004135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)5.3008173
Glaucophane  (*)Amphibole   Na2(Mg3Al2)Si8O22(OH)25.300286
Jadeite  (*)PyroxeneNaAlSi2O65.300154
Lawsonite  (*)LawsoniteCaAl2(Si2O7)(OH)2·H2O5.300121
Mercury  (*)NoneHg5.300397
Montroydite  (*)NoneHgO5.30029
Omphacite  (*)Pyroxene(Ca,Na)(Mg,Fe,Al)Si2O65.300229
Quartz  (*)QuartzSiO25.30061156
Rutile  (*)RutileTiO25.3005614
Titanite  (*)TitaniteCaTi(SiO4)O5.3011701864899
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O5.300652
Zircon  (*)ZirconZr(SiO4)5.3005251



1 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-000455.30 ?-?    YesCalomel, Cinnabar, Clearcreekite, Deanesmithite, Edgarbaileyite, Edoylerite, Gianellaite, Hanawaltite, Mercury, Metacinnabar, Montroydite, Mosesite, Peterbaylissite, Schuetteite, Szymanskiite, Tedhadleyite, Terlinguaite, Tiemannite, Wattersite, EglestoniteHg6418New Idria District, Diablo Range, San Benito Co., California, USACalifornia Mercury OccurrencesStudemeister (1984)10.1007/BF00199786MD19_202 


SampleSource LocalityReference URL


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