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English Mountain Mining District, Nevada County, California, USAi
Regional Level Types
English Mountain Mining DistrictMining District
Nevada CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
39° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~68km
GRN:
N27W67
Type:
Mining District
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
267684
Long-form identifier:
mindat:1:2:267684:8
GUID (UUID V4):
0


NOTE: There is no USGS MRDS database file for this district.

Location: This district is in northeastern Nevada County in the vicinity of English Mountain and Bowman Lake. The area was first mined during the 1860's, followed by activity at the English Mountain gold and copper mines during the 1890's and early 1900's. There has been minor prospecting since.

Geology: The area is underlain by slate, schist, hornfels and granite, all of which are cut by diorite and quartz-diorite dikes. The ore deposits consist of Fe-rich zones containing quartz, free gold, galena, pvrite, and chalcopyrite. Molybednite is abundant in places. The principal gold sources have been the English Mountain Gold and Yellow Metal mines.

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

10 valid minerals.

Detailed Mineral List:

ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Galena
Formula: PbS
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Marcasite
Formula: FeS2
ⓘ Molybdenite
Formula: MoS2
ⓘ Native Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2

List of minerals for each chemical element

OOxygen
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ MarcasiteFeS2
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
MoMolybdenum
Moⓘ MolybdeniteMoS2
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Lindgren, Waldemar (1900) Colfax folio, California. Folios of the Geologic Atlas 66. US Geological Survey doi:10.3133/gf66
MacBoyle, Errol (1919), Nevada County, English Mountain and Yellow Metal Mines, California Mining Bureau Report 16 (Report 16): 164, 258.
Clark, W.B. (1970) Gold Districts of California. Bulletin 193. California Division of Mines & Geologyp.46
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