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Grass Valley, Grass Valley Mining District, Nevada Co., California, USAi
Regional Level Types
Grass ValleyValley
Grass Valley Mining DistrictMining District
Nevada Co.County
CaliforniaState
USACountry

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04402200015182690493271.jpg
View of the Grass Valley underground gold mining, ca. 1905

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
01645590015182690517898.jpg
View of the Grass Valley underground gold mining, ca. 1910.

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
08836850015182690529758.jpg
View of the Grass Valley underground gold mining, ca. 1910.

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
02054020015182683738088.jpg
View of the Grass Valley underground gold mining, ca. 1905

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
09571110015182687708783.jpg
View of the Grass Valley underground gold mining, ca. 1910.

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
02450590015182690113410.jpg
View of the Grass Valley underground gold mining, ca. 1910.

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
04402200015182690493271.jpg
View of the Grass Valley underground gold mining, ca. 1905

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
01645590015182690517898.jpg
View of the Grass Valley underground gold mining, ca. 1910.

Grass Valley, Grass Valley Mining District, Nevada Co., California, USA
Latitude & Longitude (WGS84):
39° 13' 9'' North , 121° 3' 36'' West
Latitude & Longitude (decimal):
Locality type:


An incorporated city.

NOTE: Relative distances for the individual localities in this district to the city of Grass Valley are either related to the coordinates of record found in the USGS GNIS database (localities very close to the center of the city; a point about 200 meters N of the point where Interstate highway 80 bisects the name of Grass Valley on the topo maps), or to Grass Valley "proper" which is the point on the topo maps where the name of Grass Valley is bisected by Interstate highway 80 (an approximate center of the city). Many localities in the USGS MRDS database and elsewhere present distances to Grass Valley seemingly based on the nearest city limit, which are quite irregular, and do not present a meaningful description from the center of the city.

Select Mineral List Type

Standard Detailed Strunz Dana 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

26 valid minerals.

Detailed Mineral List:

Altaite
Formula: PbTe
Description: Occurs on the 5,000 foot level.
Reference: Johnston, William Drumm (1940), The gold-quartz veins of Grass Valley, California: USGS PP 194, 101 pp.: 36, 44; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 61.
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Localities: Reported from at least 8 localities in this region.
Arsenic
Formula: As
Arsenopyrite
Formula: FeAsS
Calcite
Formula: CaCO3
Localities: Reported from at least 13 localities in this region.
'Chabazite'
Colour: Colorless
Description: Occurs as crystals several mm diameter forming coatings of fissures in diabase.
Reference: Lindgren, Waldemar (1896a), The gold-quartz veins of Nevada City and Grass Valley districts, California: USGS 17th. Annual Report, part 2: 120; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 127.
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 14 localities in this region.
'Chlorite Group'
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10101243.
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 10 localities in this region.
Dolomite
Formula: CaMg(CO3)2
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Fayalite-Forsterite Series'
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10213126.
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Reference: Owen, David Dale (1852), Notice of a new mineral from California: Academy of Natural Sciences Philadelphia Proceedings: 6: 108-109; Genth, Frederick Augustus (1859), Contributions to mineralogy American Journal of Science, 2nd. series: 28: 246-255; […Mineralogical Magazine, 2nd. series: 1: 147-150 (1859)]: 248; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 341.
Galena
Formula: PbS
Localities: Reported from at least 20 localities in this region.
Gold
Formula: Au
Localities: Reported from at least 182 localities in this region.
Hessite
Formula: Ag2Te
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 341.
Magnesite
Formula: MgCO3
Magnetite
Formula: Fe2+Fe3+2O4
'Mariposite'
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 9 localities in this region.
Muscovite var: Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 8 localities in this region.
Naumannite
Formula: Ag2Se
Opal
Formula: SiO2 · nH2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Petzite
Formula: Ag3AuTe2
Pyrite
Formula: FeS2
Localities: Reported from at least 26 localities in this region.
Reference: Lindgren, Waldemar (1896a), The gold-quartz veins of Nevada City and Grass Valley districts, California: USGS 17th. Annual Report, part 2: 1-262
'Pyroxene Group'
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10213126.
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Localities: Reported from at least 177 localities in this region.
Quartz var: Chalcedony
Formula: SiO2
Scheelite
Formula: Ca(WO4)
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Localities:
'Serpentine Subgroup var: Picrolite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 335.
Sphalerite
Formula: ZnS
Localities: Reported from at least 15 localities in this region.
Talc
Formula: Mg3Si4O10(OH)2
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S13
Description: A heavy mass was found.
Reference: Lindgren, Waldemar (1896a), The gold-quartz veins of Nevada City and Grass Valley districts, California: USGS 17th. Annual Report, part 2: 119; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 364.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Arsenic1.CA.05As
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Altaite2.CD.10PbTe
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Hessite2.BA.60Ag2Te
Naumannite2.BA.55Ag2Se
Petzite2.BA.75Ag3AuTe2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S13
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Ferrimolybdite7.GB.30Fe2(MoO4)3 · nH2O
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Chabazite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Limonite'-(Fe,O,OH,H2O)
'Mariposite'-K(Al,Cr)2(Al,Si)4O10(OH)2
'Pyroxene Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'var: Picrolite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Semi-metals and non-metals
Arsenic1.3.1.1As
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Hessite2.4.2.1Ag2Te
Naumannite2.4.1.2Ag2Se
Petzite2.4.3.3Ag3AuTe2
AmXp, with m:p = 1:1
Altaite2.8.1.3PbTe
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S13
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Hydrated Normal Molybdates and Tungstates
Ferrimolybdite49.2.1.1Fe2(MoO4)3 · nH2O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
'Chabazite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Limonite'-(Fe,O,OH,H2O)
'Mariposite'-K(Al,Cr)2(Al,Si)4O10(OH)2
Muscovite
var: Phengite
-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
var: Sericite-KAl2(AlSi3O10)(OH)2
'Pyroxene Group'-
Quartz
var: Chalcedony
-SiO2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'var: Picrolite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H OpalSiO2 · nH2O
H Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
H FerrimolybditeFe2(MoO4)3 · nH2O
H Limonite(Fe,O,OH,H2O)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H TalcMg3Si4O10(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
CCarbon
C DolomiteCaMg(CO3)2
C CalciteCaCO3
C MagnesiteMgCO3
C AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
O QuartzSiO2
O DolomiteCaMg(CO3)2
O ChromiteFe2+Cr23+O4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O CalciteCaCO3
O OpalSiO2 · nH2O
O MagnesiteMgCO3
O Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O ScheeliteCa(WO4)
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
O FerrimolybditeFe2(MoO4)3 · nH2O
O Limonite(Fe,O,OH,H2O)
O MagnetiteFe2+Fe23+O4
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Quartz (var: Chalcedony)SiO2
O TalcMg3Si4O10(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg MagnesiteMgCO3
Mg Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg TalcMg3Si4O10(OH)2
Mg Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Al MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si OpalSiO2 · nH2O
Si Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Quartz (var: Chalcedony)SiO2
Si TalcMg3Si4O10(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
SSulfur
S ArsenopyriteFeAsS
S PyriteFeS2
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
S GalenaPbS
S ChalcopyriteCuFeS2
S SphaleriteZnS
S PyrrhotiteFe7S8
KPotassium
K MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca ScheeliteCa(WO4)
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
MnManganese
Mn Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe ArsenopyriteFeAsS
Fe PyriteFeS2
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Fe ChromiteFe2+Cr23+O4
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyrrhotiteFe7S8
Fe Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe FerrimolybditeFe2(MoO4)3 · nH2O
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
NiNickel
Ni Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Cu ChalcopyriteCuFeS2
ZnZinc
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Zn SphaleriteZnS
Zn Serpentine Subgroup (var: Picrolite)D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As ArsenopyriteFeAsS
As ArsenicAs
SeSelenium
Se NaumanniteAg2Se
MoMolybdenum
Mo FerrimolybditeFe2(MoO4)3 · nH2O
AgSilver
Ag HessiteAg2Te
Ag NaumanniteAg2Se
Ag PetziteAg3AuTe2
SbAntimony
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
TeTellurium
Te HessiteAg2Te
Te PetziteAg3AuTe2
Te AltaitePbTe
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
Au PetziteAg3AuTe2
PbLead
Pb GalenaPbS
Pb AltaitePbTe

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Burlak, T. L. (2012). The mineralogical fate of arsenic during weathering of sulfides in gold-quartz veins: A microbeam analytical study (Masters dissertation, California State University, Sacramento).

Localities in this Region

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