Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

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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:
Logtown, El Dorado District, Mother Lode Belt, El Dorado Co., California, USA


mindat Locality ID: 264224
mindat URL: http://www.mindat.org/loc-264224.html

Tectonic Settings:

Total number of sublocalities beneath "Logtown, El Dorado District, Mother Lode Belt, El Dorado Co., California, USA": 46
Total number of bottom-level sublocalities: 46

Number of Child Localities: 46
Child Localities:
Adjuster Mine (Hustler Claim; Adjuster Claim)
Alabama Express Mine (Golden Rod & Gold Dust Mine; Alabama; Empress; Goldenrod; Gd Dst [Gold Dust Claim])
Baker And Hamilton Placer
Bidstrup Mine
Blue Cat Mine (Magdalena; Madelina; Madeline)
Buena Vista Mine
Church Mine
Climax Mine
Dan Wicham Mine
Double E Occurrence
Dr. Wren Occurrence
Duncan And Adams Mine
E. E. Copper Mine (E. E. Copper Deposit)
Equator Mine (Equetor)
German Mine [1] (Haeger)
Gold Top Mine
Idaho Mine
Julia Beard Mine
La Moille Mine
Lookout Mine (Santa Ynez; Sam Hill; Mohawk)
Loveless Mine
Lucky Jack Mine [1]
Martinez Gold Mine (Martinez Mine; Martinez Hillside Group; Bismark Claim; Gold Reef Claim; Hillside Extension Claim; Hillside Extension No. 3 Claim; Martinez Claim)
Martinez Mine (Martinez Gold Mine; Martinez Claim; Bismarck Claim; Gold Reef Claim; Hillside Extension Claim; Hillside Extension No. 3 Claim; Martinez Hillside Group; Hillside Group)
McNulty Mine (Oakland; Golden Gate)
Minerva Mine
Minnehaha Mine
Moonday Prospect
New Petaluma Mine
Noonday Mine
Ophir Mine
Orum Mine (Woodland)
Pocahontas Mine
Red Rover Mine
Red Wing Mine (Red Top)
Richards Quartz Mine
Richelieu Mine
Robert Prospect
School Girl And Union Mine (School Girl & Union; Springfield)
Seymour Hill Mine
Spanish King Placer Mine
St. Louis Mine
Starlight And Independence Mine (Starlight Mine)
Union Mine (Union-Church Mine; Springfield Mine)
Unnamed Au Mine [18] (Four Unnamed Adits)
Wild Rose Consolidated Mine (Wild Rose Cons.; Old Abe Claim; Lone Star Claim; Wild Rose Claim; Moon Claim [?])

Latitude: 38°38'28"N
Longitude: 120°49'48"W
Decimal Degree (lat, lon): 38.641111111111,-120.83

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: Ag Al As Au C Ca Cu Fe H K Mg Mn O Pb S Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ArsenopyriteCalciteChalcopyriteClayCopperMicaNickelineNonePyriteQuartz
RhodoniteRocksaltRutileSphaleriteTalc

15 IMA Minerals at location:
Arsenopyrite  (*)Bornite  (*)Calcite  (*)Chalcopyrite  (*)Galena  (*)
Gold  (*)Muscovite  (*)Pyrite  (*)Pyrolusite  (*)Pyrrhotite  (*)
Quartz  (*)Rhodonite  (*)Silver  (*)Sphalerite  (*)Talc  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS11546009052
Bornite  (*)NoneCu5FeS42154574,1545915516
Calcite  (*)CalciteCa(CO3)115460527770
Chalcopyrite  (*)ChalcopyriteCuFeS23154566,154574,15459127198
Galena  (*)RocksaltPbS2154584,15460024243
Gold  (*)CopperAu35154562,154563,154565,154566,154567,154568,154569,154573,154574,154576,154577,154578,154579,154580,154581,154582,154583,154584,154586,154587,154588,154590,154593,154594,154595,154596,154597,154598,154600,154601,154602,154603,154604,154605,15460730554
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)22154584,15458517380
Pyrite  (*)PyriteFeS27154566,154574,154584,154591,154593,154600,15460539462
Pyrolusite  (*)RutileMnO22154584,1545853106
Pyrrhotite  (*)NickelineFe7S811545669056
Quartz  (*)QuartzSiO233154563,154565,154566,154567,154568,154569,154570,154573,154576,154577,154578,154579,154580,154581,154582,154583,154584,154586,154587,154588,154590,154593,154594,154595,154596,154597,154598,154600,154601,154603,154604,154605,15460761156
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)2154584,154585969
Silver  (*)CopperAg11545745186
Sphalerite  (*)SphaleriteZnS115460021482
Talc  (*)Clay TalcMg3Si4O10(OH)211545723337



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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