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:
Laytonville, Coastal Range, Mendocino Co., California, USA


mindat Locality ID: 3501
mindat URL: http://www.mindat.org/loc-3501.html

Tectonic Settings:

Total number of sublocalities beneath "Laytonville, Coastal Range, Mendocino Co., California, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Burn's Flat
Fisher Ranch Mine
Laytonville Quarry (Longvale; Longvale Quarry)
Syke Ranch

Latitude: 39°42'17"N
Longitude: 123°29'26"W
Decimal Degree (lat, lon): 39.704722222222,-123.49055555556

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 C Ca Cu Fe H K Mg Mn Na O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleAragoniteCalciteChalcopyriteClayClinozoisiteCorundumEpidoteFeldsparGarnet
LawsoniteMicaNonePumpellyitePyritePyroxeneQuartzRutileSpinelStilpnomelane
TalcTitanite

32 IMA Minerals at location:
Aegirine  (*)Albite  (*)Almandine  (*)Aragonite  (*)Calcite  (*)
Calderite  (*)Chalcopyrite  (*)Clinozoisite  (*)Deerite  (*)Glaucophane  (*)
Graphite  (*)Grunerite  (*)Howieite  (*)Ilmenite  (*)Jadeite  (*)
Kutnohorite  (*)Lawsonite  (*)Magnesio-riebeckite  (*)Magnetite  (*)Muscovite  (*)
Pumpellyite-(Mg)  (*)Pyrite  (*)Quartz  (*)Riebeckite  (*)Rutile  (*)
Siderite  (*)Spessartine  (*)Stilpnomelane  (*)Talc  (*)Titanite  (*)
Tremolite  (*)Zussmanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O611635411022
Albite  (*)FeldsparNa(AlSi3O8)11635418803
Almandine  (*)GarnetFe2+3Al2(SiO4)311635412353
Aragonite  (*)AragoniteCa(CO3)11635413250
Calcite  (*)CalciteCa(CO3)116354127770
Calderite  (*)GarnetMn2+3Fe3+2(SiO4)3116354117
Chalcopyrite  (*)ChalcopyriteCuFeS2116354127198
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)11635411025
Deerite  (*)NoneFe2+6Fe3+3(Si6O17)O3(OH)52163539,16354127
Glaucophane  (*)Amphibole   Na2(Mg3Al2)Si8O22(OH)22163541,163542286
Graphite  (*)NoneC11635412812
Grunerite  (*)Amphibole   Fe2+2Fe2+5Si8O22(OH)21163541223
Howieite  (*)NoneNa(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10116354116
Ilmenite  (*)CorundumFe2+Ti4+O311635415433
Jadeite  (*)PyroxeneNaAlSi2O61163541154
Kutnohorite  (*)NoneCaMn2+(CO3)21163541234
Lawsonite  (*)LawsoniteCaAl2(Si2O7)(OH)2·H2O1163541121
Magnesio-riebeckite  (*)Amphibole   Na2(Mg3Fe3+2)Si8O22(OH)2116354193
Magnetite  (*)SpinelFe2+Fe3+2O4116354114899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2116354117380
Pumpellyite-(Mg)  (*)PumpellyiteCa2MgAl2(Si2O7)(SiO4)(OH)2·H2O1163541106
Pyrite  (*)PyriteFeS2116354139462
Quartz  (*)QuartzSiO2116354161156
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)21163541375
Rutile  (*)RutileTiO22163541,1635425614
Siderite  (*)CalciteFe(CO3)11635416417
Spessartine  (*)GarnetMn2+3Al2(SiO4)311635411214
Stilpnomelane  (*)Stilpnomelane Clay(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O1163541456
Talc  (*)Clay TalcMg3Si4O10(OH)211635413337
Titanite  (*)TitaniteCaTi(SiO4)O11635414899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)211635412562
Zussmanite  (*)ClayK(Fe,Mg,Mn)13(Si,Al)18O42(OH)1411635415



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
FKM-15Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://www.rockptx.com/fkm-1-to-fkm-25/#FKM-15
FKM-141Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://www.rockptx.com/fkm-126-to-fkm-150/#FKM-141
FKM-147Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://www.rockptx.com/fkm-151-to-fkm-175/#FKM-147
R070393Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://rruff.info/R070393
R060031Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://rruff.info/R060031
R050448Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USAhttps://rruff.info/R050448


All locality data graciously provided by mindat.org

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