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:
Skaggs Springs, Warm Springs Dam, Coast Range, Sonoma Co., California, USA


mindat Locality ID: 219083
mindat URL: http://www.mindat.org/loc-219083.html

Tectonic Settings:

Total number of sublocalities beneath "Skaggs Springs, Warm Springs Dam, Coast Range, Sonoma Co., California, USA": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Northwest Of Skaggs Springs Mine
Skaggs Springs Mine
Unspecified Pumpellyite Occurrence (1)

Latitude: 38°41'35"N
Longitude: 123°1'36"W
Decimal Degree (lat, lon): 38.693055555556,-123.02666666667
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 As C Fe H Hg K Mg Na O S Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleCalciteClayCristobaliteMicaNoneOrpimentSphalerite

10 IMA Minerals at location:
Cinnabar  (*)Cristobalite  (*)Glaucophane  (*)Idrialite  (*)Metacinnabar  (*)
Muscovite  (*)Opal  (*)Orpiment  (*)Realgar  (*)Siderite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Cinnabar  (*)NoneHgS11803192600
Cristobalite  (*)CristobaliteSiO21180319453
Glaucophane  (*)Amphibole   Na2(Mg3Al2)Si8O22(OH)21180320286
Idrialite  (*)NoneC22H14118031915
Metacinnabar  (*)SphaleriteHgS2180318,180319255
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2118031917380
Opal  (*)AmorphousSiO2·nH2O11803192994
Orpiment  (*)OrpimentAs2S31180319511
Realgar  (*)NoneAsS2180318,180319712
Siderite  (*)CalciteFe(CO3)11803196417


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL
R060466Skaggs Springs, Warm Springs Dam, Coast Range, Sonoma Co., California, USAhttps://rruff.info/R060466

All locality data graciously provided by mindat.org

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