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Baldwin Lake District, San Bernardino Mountains, San Bernardino Co., California, USAi
Regional Level Types
Baldwin Lake DistrictMining District
San Bernardino MountainsMountain Range
San Bernardino Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
34° 16' 46'' North , 116° 47' 50'' West
Latitude & Longitude (decimal):
Locality type:


Location and History: This district is in the general vicinity of, and E of Baldwin Lake, which is in the northern part of the San Bernardino Mountains. Gold was reported to have been mined here by Mexicans possibly as early as 1800. The Rose Mine was active in 1860, and there was considerable activity in the district in the 1890's and early 1900's. The Doble Mine was active again in the 1930's and 1940's. The lake was named for C. G. Baldwin, first President of Pomona College.

Geology: Rocks in this district include mica schist, quartzite, limestone, and granite. The ore deposits consist of systems of irregular quartz-calcite veins containing free gold, scheelite, and sulfides. The greatest depth of development is about 400 feet. There are also placer deposits in the district.

Mines: Lode: Christie, Doble ($250,000 to $300,000), Erwin, Gem, Gold Hill, Hollie Ann, Lester, Log Cabin, Rose ($450,000 to $600,000), and Stewart. Placer: McClure-Bess, Parker, Rattlesnake Canyon, Vaughn, and Weaver.

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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

14 valid minerals.

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!

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

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Alphabetical List Tree Diagram

Detailed Mineral List:

'Bloodstone'
Formula: SiO2
Reference: Sterrett, Douglas Bovard (1911), Gems and precious stones. Mineral Resources of the United States for 1910, part 2; Department of the Interior, U.S. Geological Survey: 872; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318.
Calcite
Formula: CaCO3
Cinnabar
Formula: HgS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cuprite
Formula: Cu2O
Dolomite
Formula: CaMg(CO3)2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10189555.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Galena
Formula: PbS
'Garnet Group'
Formula: X3Z2(SiO4)3
Gold
Formula: Au
Localities: Reported from at least 13 localities in this region.
Graphite
Formula: C
Hematite
Formula: Fe2O3
Magnesite
Formula: MgCO3
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10189555.
Malachite
Formula: Cu2(CO3)(OH)2
Molybdenite
Formula: MoS2
Quartz
Formula: SiO2
Localities: Reported from at least 13 localities in this region.
Quartz var: Chalcedony
Formula: SiO2
Reference: Sterrett, Douglas Bovard (1911), Gems and precious stones. Mineral Resources of the United States for 1910, part 2; Department of the Interior, U.S. Geological Survey: 872; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318.
Scheelite
Formula: Ca(WO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Cinnabar2.CD.15aHgS
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Bloodstone'-SiO2
'Garnet Group'-X3Z2(SiO4)3

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
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
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 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Bloodstone'-SiO2
'Garnet Group'-X3Z2(SiO4)3
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
C MalachiteCu2(CO3)(OH)2
C GraphiteC
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MagnesiteMgCO3
OOxygen
O QuartzSiO2
O ScheeliteCa(WO4)
O CupriteCu2O
O MalachiteCu2(CO3)(OH)2
O Garnet GroupX3Z2(SiO4)3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O BloodstoneSiO2
O CalciteCaCO3
O HematiteFe2O3
O DolomiteCaMg(CO3)2
O MagnesiteMgCO3
O Quartz (var: Chalcedony)SiO2
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg MagnesiteMgCO3
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si QuartzSiO2
Si Garnet GroupX3Z2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si BloodstoneSiO2
Si Quartz (var: Chalcedony)SiO2
SSulfur
S CinnabarHgS
S GalenaPbS
S MolybdeniteMoS2
CaCalcium
Ca ScheeliteCa(WO4)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
CuCopper
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
MoMolybdenum
Mo MolybdeniteMoS2
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
HgMercury
Hg CinnabarHgS
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Cloudman, H.C., F.J.H. Merrill & E. Huguenin (1919), San Bernardino County: California Mining Bureau. Report 15: 774-899; […(abstract): Geol. Zentralbl., Band 27: 394]: 794-797.
Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology, California Division of Mines (Report 49): 49(1-2): 69-86.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 170.

Localities in this Region

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North America
North America PlateTectonic Plate
USA

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