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Lead Mountain Mine (Main Barite Mine), Lead Mountain [2], Barstow, Barstow Mining District, San Bernardino Co., California, USAi
Regional Level Types
Lead Mountain Mine (Main Barite Mine)Mine
Lead Mountain [2]Mountain
Barstow- not defined -
Barstow Mining DistrictMining District
San Bernardino Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
34° 55' 12'' North , 116° 56' 9'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Barstow23,692 (2017)8.3km
Barstow Heights24,202 (2006)12.3km
Lenwood3,543 (2011)16.0km
Silver Lakes5,623 (2017)41.7km
Fort Irwin8,845 (2011)44.4km


A former baryte-Pb-Ag-Au-Zn occurrence/mine located in sec. 36, T10N, R1W (SBM), 0.1 km (0.1 mile) SSW of Lead Mountain [2] (coordinates of record), about 9 km ENE of Barstow and SW of Calico (5 miles NW of Yermo), on private (patented) land. The property is comprised of 640 acres. MRDS database stated accuracy for this location is 10 meters. Worked for baryte during the period 1931-1933 with no Pb-Ag production.

Mineralization is hosted in andesite. The ore body is irregular in form, strikes NW, dips 40NE at a Width of 30.48 meters and a length of 396.24 meters. Controls for ore emplacement included a fissure. The vein material is a coarsely crystallized baryte with quartz containing brown iron oxides, Pb carbonate, ochre, Mn oxide and Ag chlorides. Country rock is tuff, limestone and andesitic porphyry. Local rocks include Miocene nonmarine rocks.

Workings include underground openings comprised of a series of open cuts and tunnels for a distance of 500 feet. Present workings are confined to a tunnel driven N for 75 feet, crosscutting the ore fissure. Drifts and stoping were excavated above this level. A shaft has been sunk on an incline of 33 degrees for 210 feet, near the portal of the crosscut tunnel. A stope is 25 feet wide by 50 feet long and 30 feet high. At the floor of the stope, there is a vertical winze at 245 feet deep that connects shaft to a tunnel 1,300 feet in length driven from the N.

Mineralization is a baryte vein deposit in metamorphic rocks of Pre-Cretaceous age and sedimentary and volcanic rocks of Tertiary age. The veins follow faults.

Analytical data results: Pb 15-30%, Au $0.40-2.00 (period values)/ton, Ag 6-30 ounces/ton.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


21 valid minerals. 1 erroneous literature entry.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Alunite
Formula: KAl3(SO4)2(OH)6
Reference: www.mineralsocal.org
Baryte
Formula: BaSO4
Description: Occurs in veins in and around Lead Mountain.
Reference: Murdoch, Joseph & Robert W. Webb (1942), Notes on some minerals from southern California, III: American Mineralogist: 27: 327; Durrell, C. (1954), Barite deposits near Barstow, San Bernardino County, California: CA Div. Mines Spec. Rept. 39; Wright, L.A., et al (1953), Mines and mineral deposits of San Bernardino County, California: CA Jour. Mines & Geol.: 49(1&2): 155; Brobst, D.A. (1958), Barite Resources of the United States, USGS Bull. 1072-B: 108 (Table 10); Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 98, 218.
Bayldonite
Formula: PbCu3(AsO4)2(OH)2
Description: The bayldonite/duftite specimens came from the Hope/Lower Copper prospect, not from the Lead Mountain mine.
Reference: Housley, R. pers. comm. 2019
Calcite
Formula: CaCO3
Reference: www.mineralsocal.org
Cerussite
Formula: PbCO3
Reference: Tucker, W. Burling (1924a), Imperial, Inyo, Kern, Los Angeles, Riverside, San Bernardino, San Diego, Ventura Counties: California Mining Bureau. Report 20: 33-50, 95; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 126; Pemberton, H. Earl (1983), Minerals of California: 233.
Chlorargyrite
Formula: AgCl
Reference: Tucker, W. Burling & Reid J. Sampson (1943b), Mineral resources of San Bernardino County: California Division Mines Report 39: 484; Wright, L.A., et al (1953), Mines and mineral deposits of San Bernardino County, California: California Journal of Mines & Geology: 49(1&2): 79 table - list of mines, 155; Pemberton, H. Earl (1983), Minerals of California: 195.
Cinnabar
Formula: HgS
Reference: R. Housley (2008). The Lead Mountain Field Trip, Bull. Min. Soc. So. Calif.: 79(3) (March 2008): 6-9.
Coronadite
Formula: Pb(Mn4+6Mn3+2)O16
Reference: Dr Robert Housley using SEM-EDS
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Reference: Dr Robert Housley using SEM-EDS
Fibroferrite
Formula: Fe3+(SO4)(OH) · 5H2O
Reference: www.mineralsocal.org
Galena
Formula: PbS
Reference: Erwin, H.D. & D.L. Gardner (1940), Notes on the geology of a portion of the Calico Mountains, San Bernardino County, California: California Division Mines Report 36: 245; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 191; Pemberton, H. Earl (1983), Minerals of California: 233.
Goethite
Formula: α-Fe3+O(OH)
Habit: translucent blades on barite
Colour: red, reddish brown, black, silver
Reference: MarekC pers. coll. 2019
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Description: Occurs as crusts and radiating clusters of slender crystals in cavities in Baryte.
Reference: Murdoch, Joseph & Robert W. Webb (1942), Notes on some minerals from southern California, III: American Mineralogist: 27: 327; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 218; Pemberton, H. Earl (1983), Minerals of California: 514.
Hetaerolite
Formula: ZnMn2O4
Reference: Dr Robert Housley using SEM-EDS
Malachite
Formula: Cu2(CO3)(OH)2
Reference: www.mineralsocal.org
Mimetite
Formula: Pb5(AsO4)3Cl
Reference: R. Housley (2008). The Lead Mountain Field Trip, Bull. Min. Soc. So. Calif.: 79(3) (March 2008): 6-9.
Murdochite ?
Formula: PbCu6O8-x(Cl,Br)2x where x<=0.5
Reference: www.mineralsocal.org
Plattnerite
Formula: PbO2
Reference: www.mineralsocal.org; Dr Robert Housley using SEM-EDS
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Reference: www.mineralsocal.org
Smithsonite
Formula: ZnCO3
Reference: Jason Utas Collection
Sulphur ?
Formula: S8
Reference: www.mineralsocal.org
Willemite
Formula: Zn2SiO4
Habit: white blob on barite, 100um in diameter
Colour: white
Fluorescence: very strong white fluorescence
Reference: MarekC pers. coll. 2019

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Sulphur ?1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Cinnabar2.CD.15aHgS
Galena2.CD.10PbS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Murdochite ?3.DB.45PbCu6O8-x(Cl,Br)2x where x<=0.5
Group 4 - Oxides and Hydroxides
Coronadite4.DK.05aPb(Mn4+6Mn3+2)O16
Cryptomelane4.DK.05aK(Mn4+7Mn3+)O16
Goethite4.00.α-Fe3+O(OH)
Hetaerolite4.BB.10ZnMn2O4
Plattnerite4.DB.05PbO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Rosasite5.BA.10(Cu,Zn)2(CO3)(OH)2
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Alunite7.BC.10KAl3(SO4)2(OH)6
Baryte7.AD.35BaSO4
Fibroferrite7.DC.15Fe3+(SO4)(OH) · 5H2O
Group 8 - Phosphates, Arsenates and Vanadates
Bayldonite ?8.BH.45PbCu3(AsO4)2(OH)2
Mimetite8.BN.05Pb5(AsO4)3Cl
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Willemite9.AA.05Zn2SiO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur ?1.3.5.1S8
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
Galena2.8.1.1PbS
Group 4 - SIMPLE OXIDES
AX2
Plattnerite4.4.1.6PbO2
Miscellaneous
Murdochite ?4.6.5.1PbCu6O8-x(Cl,Br)2x where x<=0.5
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Hetaerolite7.2.7.2ZnMn2O4
AB8X16
Coronadite7.9.1.4Pb(Mn4+6Mn3+2)O16
Cryptomelane7.9.1.2K(Mn4+7Mn3+)O16
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Smithsonite14.1.1.6ZnCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Rosasite16a.3.1.2(Cu,Zn)2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)(XO4)Zq·xH2O
Fibroferrite31.9.12.1Fe3+(SO4)(OH) · 5H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Bayldonite ?41.5.14.1PbCu3(AsO4)2(OH)2
A5(XO4)3Zq
Mimetite41.8.4.2Pb5(AsO4)3Cl
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Willemite51.1.1.2Zn2SiO4
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O

List of minerals for each chemical element

HHydrogen
H HemimorphiteZn4Si2O7(OH)2 · H2O
H AluniteKAl3(SO4)2(OH)6
H FibroferriteFe3+(SO4)(OH) · 5H2O
H MalachiteCu2(CO3)(OH)2
H Rosasite(Cu,Zn)2(CO3)(OH)2
H Goethiteα-Fe3+O(OH)
H BayldonitePbCu3(AsO4)2(OH)2
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C Rosasite(Cu,Zn)2(CO3)(OH)2
C CerussitePbCO3
C SmithsoniteZnCO3
OOxygen
O BaryteBaSO4
O HemimorphiteZn4Si2O7(OH)2 · H2O
O AluniteKAl3(SO4)2(OH)6
O CalciteCaCO3
O FibroferriteFe3+(SO4)(OH) · 5H2O
O MalachiteCu2(CO3)(OH)2
O PlattneritePbO2
O Rosasite(Cu,Zn)2(CO3)(OH)2
O CerussitePbCO3
O CryptomelaneK(Mn74+Mn3+)O16
O CoronaditePb(Mn64+Mn23+)O16
O HetaeroliteZnMn2O4
O SmithsoniteZnCO3
O Goethiteα-Fe3+O(OH)
O WillemiteZn2SiO4
O MimetitePb5(AsO4)3Cl
O MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
O BayldonitePbCu3(AsO4)2(OH)2
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si WillemiteZn2SiO4
SSulfur
S BaryteBaSO4
S AluniteKAl3(SO4)2(OH)6
S FibroferriteFe3+(SO4)(OH) · 5H2O
S GalenaPbS
S CinnabarHgS
S SulphurS8
ClChlorine
Cl ChlorargyriteAgCl
Cl MimetitePb5(AsO4)3Cl
Cl MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
KPotassium
K AluniteKAl3(SO4)2(OH)6
K CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Ca CalciteCaCO3
MnManganese
Mn CryptomelaneK(Mn74+Mn3+)O16
Mn CoronaditePb(Mn64+Mn23+)O16
Mn HetaeroliteZnMn2O4
FeIron
Fe FibroferriteFe3+(SO4)(OH) · 5H2O
Fe Goethiteα-Fe3+O(OH)
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu Rosasite(Cu,Zn)2(CO3)(OH)2
Cu MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
Cu BayldonitePbCu3(AsO4)2(OH)2
ZnZinc
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn Rosasite(Cu,Zn)2(CO3)(OH)2
Zn HetaeroliteZnMn2O4
Zn SmithsoniteZnCO3
Zn WillemiteZn2SiO4
AsArsenic
As MimetitePb5(AsO4)3Cl
As BayldonitePbCu3(AsO4)2(OH)2
BrBromine
Br MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
AgSilver
Ag ChlorargyriteAgCl
BaBarium
Ba BaryteBaSO4
HgMercury
Hg CinnabarHgS
PbLead
Pb PlattneritePbO2
Pb CerussitePbCO3
Pb GalenaPbS
Pb CoronaditePb(Mn64+Mn23+)O16
Pb MimetitePb5(AsO4)3Cl
Pb MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
Pb BayldonitePbCu3(AsO4)2(OH)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Tucker, W. Burling (1921), Los Angeles field division: California Mining Bureau Report 17: 334.
Tucker, W. Burling (1924a), San Bernardino County: California Mining Bureau. Report 20: 95, 199-200.
Tucker, W. Burling & Reid J. Sampson (1930), Los Angeles field division: California Journal of Mines and Geology, California Mining Bureau. (Report 26): 26: 298.
Tucker, W. Burling & Reid J. Sampson (1931), Los Angeles Field Division; 27th Report of the State Mineralogist; San Bernardino County: California Journal of Mines and Geology, California Mining Bureau. (Report 27): 27: 351-352, 372.
Erwin, H.D. & D.L. Gardner (1940), Notes on the geology of a portion of the Calico Mountains, San Bernardino County, California: California Division Mines Report 36: 245, 249-250.
Murdoch, Joseph & Robert W. Webb (1942), Notes on some minerals from southern California, III: American Mineralogist: 27: 327.
Tucker, W. Burling & Reid J. Sampson (1943b), Mineral resources of San Bernardino County: California Division Mines Report 39: 484.
Wright, L.A., et al (1953), Mines and mineral deposits of San Bernardino County, California: California Journal of Mines & Geology: 49(1&2): 79 table - tabulated list No. 261, p. 79; No. 395, p. 134, 155.
Durrell, C. (1954), Barite deposits near Barstow, San Bernardino County, California: California Division of Mines Special Report 39: 7-8.
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines (Report 53): 53(3&4): 646-647.
Brobst, D.A. (1958), Barite Resources of the United States, USGS Bull. 1072-B: 108 (Table 10).
Gamble, J., and Danehy, E. A. (1959), Geology and Mineral Resources of Township 10 North, Range 1 and 2 West, San Bernardino County, California, San Francisco, Southern Pacific Land Company (unpublished map) No. X-0102-10, scale 1:24,000. In part after Bowen (1954) and McCulloch (1956).
Oesterling, W.A. and Spurck, W.H. (1964), Minerals for Industry, Summary of Geological Survey 1955 - 1961: Vol III - 242 pp., Southern California, Southern Pacific Company, San Francisco, CA 94105: p. 58, No. 56.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 98, 126, 191, 218.
Pemberton, H. Earl (1983), Minerals of California: 195, 233, 514.
Buchanan, L. J. (1987), Precious Metal Deposits in Detachment Terrains, Southeastern California and Western Arizona, in: Johnson, J.L., editor, Bulk Mineable Precious Metal Deposits of the Western United States - Guidebook for Field Trips: Geological Society of Nevada 1987 Symposium: 7.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10077227 & 10140678.
U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0060710261.
Housley Robert M. (2008) The Lead Mountain Field Trip, Bulletin of the Mineralogical Society of Southern California: 79(3) (March 2008): 6-9.
Housley, Robert, private communication to Michael B. Moore.

USGS MRDS Record:10077227
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