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Northwest Segment Mother Lode, El Dorado County, California, USAi
Regional Level Types
Northwest Segment Mother LodeLode
El Dorado CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearchMineralogy
04553680017272092912228.jpg
View of the American River placer gold mining area, ca. 1900.

Middle Fork American River placer, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
06254250017272026708776.jpg
Mineralogical Record cover photo of the "Fricot Nugget"

Grit Mine, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
09556080017272026712752.jpg
Native Gold, etc.

Grit Mine, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
04553680017272092912228.jpg
View of the American River placer gold mining area, ca. 1900.

Middle Fork American River placer, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
06254250017272026708776.jpg
Mineralogical Record cover photo of the "Fricot Nugget"

Grit Mine, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
09556080017272026712752.jpg
Native Gold, etc.

Grit Mine, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
04553680017272092912228.jpg
View of the American River placer gold mining area, ca. 1900.

Middle Fork American River placer, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
06254250017272026708776.jpg
Mineralogical Record cover photo of the "Fricot Nugget"

Grit Mine, Spanish Dry Diggings, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USA
Latitude & Longitude (WGS84):
38° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~58km
GRN:
N26W68
Type:
Lode
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Mindat Locality ID:
264128
Long-form identifier:
mindat:1:2:264128:0
GUID (UUID V4):
0


A segment of the Mother Lode Belt that bifurcates from the main belt at Garden Valley.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

11 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
References:
Dana 6:82.
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
Description: Fibrous; occurs in veins.
ⓘ 'Limonite'
Description: Occurs as a gossan capping 40 to 200 feet wide.
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 67 localities in this region.
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrite var. Gold-bearing Pyrite
Formula: FeS2
ⓘ Pyrolusite
Formula: Mn4+O2
Description: Occurs as masses.
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 60 localities in this region.
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
Description: Occurs as talcose schist encasing the Au-bearing stringer.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite
var. Gold-bearing Pyrite		2.EB.05aFeS2
ⓘ2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
ⓘTalc9.EC.05Mg3Si4O10(OH)2
Unclassified
ⓘ'Limonite'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ TalcMg3Si4O10(OH)2
SiSilicon
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ Pyrite var. Gold-bearing PyriteFeS2
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
MnManganese
Mnⓘ PyrolusiteMn4+O2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ ArsenopyriteFeAsS
Feⓘ Pyrite var. Gold-bearing PyriteFeS2
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
AsArsenic
Asⓘ ArsenopyriteFeAsS
AuGold
Auⓘ Native GoldAu

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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