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Alta Mine (Alta California Mine; Alta Copper claim), Low Divide, Low Divide Mining District, Klamath Mountains, Del Norte Co., California, USAi
Regional Level Types
Alta Mine (Alta California Mine; Alta Copper claim)Mine
Low Divide- not defined -
Low Divide Mining DistrictMining District
Klamath MountainsMountain Range
Del Norte Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
41° 54' 18'' North , 124° 1' 54'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Gasquet661 (2011)8.4km
Smith River866 (2011)9.9km
Hiouchi301 (2011)12.9km
Bertsch-Oceanview2,436 (2011)20.0km
Crescent City6,774 (2017)21.7km


A former Cu-Co mine located in the W½ sec. 34, T18N, R1E, HM, 0.4 km (1,300 feet) SSW of Low Divide and NE of Crescent City. Mined during the Civil War.

Mineralization is hosted in Josephine Peridotite containing pods of troilite and chalcopyrite.

Workings include a single, now caved, shaft.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Mineral List


25 valid minerals.

Detailed Mineral List:

Aragonite
Formula: CaCO3
Reference: California Geology: 48(5):119
Bismuth
Formula: Bi
Reference: California Geology: 48(5):119
Calcite
Formula: CaCO3
Reference: California Geology: 48(5):119
Chalcocite
Formula: Cu2S
Reference: Maxson, John Haviland (1933), Economic geology of portions of Del Norte and Siskiyou Counties, northwesternmost California: California Division Mines Report 29: 148; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 97; www.mineralsocal.org
Chalcopyrite
Formula: CuFeS2
Reference: Aubury, Lewis E. (1902), The copper resources of California: California Mining Bureau Bulletin 23: 115; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 183; California Geology: 48(5): 119.
Cobaltite
Formula: CoAsS
Habit: Pyritohedral
Description: Occurs massive and as 1 mm crystals.
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 78; Dunning, Gail E. and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California.
Cobaltpentlandite
Formula: (Co,Ni,Fe)9S8
Reference: California Geology: 48(5):119
Copper
Formula: Cu
Reference: California Geology: 48(5):119; Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California
Cuprite
Formula: Cu2O
Reference: California Geology: 48(5):119; Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California
Erythrite
Formula: Co3(AsO4)2 · 8H2O
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 78; www.mineralsocal.org
Goethite
Formula: α-Fe3+O(OH)
Reference: California Geology: 48(5):119
Gold
Formula: Au
Reference: California Geology: 48(5):119
Gypsum
Formula: CaSO4 · 2H2O
Reference: California Geology: 48(5):119
Magnetite
Formula: Fe2+Fe3+2O4
Description: Occurs as inclusions in troilite.
Reference: Eakle, Arthur Starr (1922), Massive troilite from Del Norte County, California: American Mineralogist: 7: 77-80; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 71.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: California Geology: 48(5):119
Maucherite
Formula: Ni11As8
Reference: California Geology: 48(5):119
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Colour: Greenish blue
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 271.
Melanterite var. Copper-bearing Melanterite
Formula: (Fe,Cu)SO4 · 7H2O
Colour: Greenish blue
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 271.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: California Geology: 48(5):119; Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California
Pyrrhotite
Formula: Fe1-xS
Reference: Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Eakle, Arthur Starr (1922), Massive troilite from Del Norte County, California: American Mineralogist: 7: 77-80; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 71.
Sphalerite
Formula: ZnS
Reference: California Geology: 48(5):119
Starkeyite
Formula: MgSO4 · 4H2O
Description: Occurs as veins in troilite.
Reference: Snetsinger, K.G. (1973) Ferroan starkeyite from Del Norte County, California. Canadian Mineralogist: 12: 229; Snetsinger, K.G. (1975) What’s in a name: starkeyite vs. leonhardite. Mineralogical Record: 6: 144-145; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 266.
Starkeyite var. Iron-bearing Starkeyite
Formula: (Mg,Fe)SO4 · 4H2O
Colour: Cream-coloured
Description: Occurs as fine-grained efflorescences on troilite.
Reference: Snetsinger, K.G. (1973) Ferroan starkeyite from Del Norte County, California. Canadian Mineralogist: 12: 229; Snetsinger, K.G. (1975) What’s in a name: starkeyite vs. leonhardite. Mineralogical Record: 6: 144-145; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 266.
Tenorite
Formula: CuO
Reference: Aubury, Lewis E. (1902), The copper resources of California: California Mining Bureau Bulletin 23: 115; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 183; www.mineralsocal.org
Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
Reference: California Geology: 48(5):119; Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California
Troilite
Formula: FeS
Description: Occurs as massive material in a shear zone of serpentine.
Reference: Eakle, Arthur Starr (1922), Massive troilite from Del Norte County, California: American Mineralogist: 7: 77-80; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 71; Dunning, Gail E. and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California.
Valleriite
Formula: (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Reference: California Geology: 48(5):119; Gail E. Dunning and Joseph F. Cooper, Jr. (2002) Paragenesis of Troilite from the Low Divide District, Del Norte County, California

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Copper1.AA.05Cu
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Cobaltite2.EB.25CoAsS
Cobaltpentlandite2.BB.15(Co,Ni,Fe)9S8
Maucherite2.AB.15Ni11As8
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrrhotite2.CC.10Fe1-xS
Sphalerite2.CB.05aZnS
Tochilinite2.FD.35Fe2+5-6(Mg,Fe2+)5S6(OH)10
Troilite2.CC.10FeS
Valleriite2.FD.30(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Melanterite7.CB.35Fe2+(H2O)6SO4 · H2O
var. Copper-bearing Melanterite7.CB.35(Fe,Cu)SO4 · 7H2O
Starkeyite7.CB.15MgSO4 · 4H2O
var. Iron-bearing Starkeyite7.CB.15(Mg,Fe)SO4 · 4H2O
Group 8 - Phosphates, Arsenates and Vanadates
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
Unclassified Minerals, Rocks, etc.
'Serpentine Subgroup'-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
Copper1.1.1.3Cu
Gold1.1.1.1Au
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 9:8
Cobaltpentlandite2.7.1.3(Co,Ni,Fe)9S8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe1-xS
Sphalerite2.8.2.1ZnS
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Cobaltite2.12.3.1CoAsS
Hydroxysulfides and Hydrated Sulfides
Tochilinite2.14.2.1Fe2+5-6(Mg,Fe2+)5S6(OH)10
Valleriite2.14.1.1(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Miscellaneous
Maucherite2.16.16.1Ni11As8
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Melanterite29.6.10.1Fe2+(H2O)6SO4 · H2O
Starkeyite29.6.6.2MgSO4 · 4H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
A3(XO4)2·xH2O
Erythrite40.3.6.3Co3(AsO4)2 · 8H2O
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
Melanterite
var. Copper-bearing Melanterite
-(Fe,Cu)SO4 · 7H2O
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Starkeyite
var. Iron-bearing Starkeyite
-(Mg,Fe)SO4 · 4H2O

List of minerals for each chemical element

HHydrogen
H StarkeyiteMgSO4 · 4H2O
H ErythriteCo3(AsO4)2 · 8H2O
H TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
H Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
H MalachiteCu2(CO3)(OH)2
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H Melanterite var. Copper-bearing Melanterite(Fe,Cu)SO4 · 7H2O
H Starkeyite var. Iron-bearing Starkeyite(Mg,Fe)SO4 · 4H2O
H MelanteriteFe2+(H2O)6SO4 · H2O
CCarbon
C MalachiteCu2(CO3)(OH)2
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O StarkeyiteMgSO4 · 4H2O
O ErythriteCo3(AsO4)2 · 8H2O
O TenoriteCuO
O CupriteCu2O
O TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
O Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
O MalachiteCu2(CO3)(OH)2
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O AragoniteCaCO3
O CalciteCaCO3
O MagnetiteFe2+Fe23+O4
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O Melanterite var. Copper-bearing Melanterite(Fe,Cu)SO4 · 7H2O
O Starkeyite var. Iron-bearing Starkeyite(Mg,Fe)SO4 · 4H2O
O MelanteriteFe2+(H2O)6SO4 · H2O
MgMagnesium
Mg StarkeyiteMgSO4 · 4H2O
Mg TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Mg Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg Starkeyite var. Iron-bearing Starkeyite(Mg,Fe)SO4 · 4H2O
AlAluminium
Al Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SSulfur
S PyrrhotiteFe1-xS
S StarkeyiteMgSO4 · 4H2O
S ChalcociteCu2S
S CobaltiteCoAsS
S ChalcopyriteCuFeS2
S SphaleriteZnS
S TroiliteFeS
S Pentlandite(FexNiy)Σ9S8
S TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
S Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
S Cobaltpentlandite(Co,Ni,Fe)9S8
S GypsumCaSO4 · 2H2O
S Melanterite var. Copper-bearing Melanterite(Fe,Cu)SO4 · 7H2O
S Starkeyite var. Iron-bearing Starkeyite(Mg,Fe)SO4 · 4H2O
S MelanteriteFe2+(H2O)6SO4 · H2O
CaCalcium
Ca GypsumCaSO4 · 2H2O
Ca AragoniteCaCO3
Ca CalciteCaCO3
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe PyrrhotiteFe1-xS
Fe ChalcopyriteCuFeS2
Fe TroiliteFeS
Fe Pentlandite(FexNiy)Σ9S8
Fe TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Fe Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Fe Goethiteα-Fe3+O(OH)
Fe Cobaltpentlandite(Co,Ni,Fe)9S8
Fe MagnetiteFe2+Fe23+O4
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe Melanterite var. Copper-bearing Melanterite(Fe,Cu)SO4 · 7H2O
Fe Starkeyite var. Iron-bearing Starkeyite(Mg,Fe)SO4 · 4H2O
Fe MelanteriteFe2+(H2O)6SO4 · H2O
CoCobalt
Co CobaltiteCoAsS
Co ErythriteCo3(AsO4)2 · 8H2O
Co Cobaltpentlandite(Co,Ni,Fe)9S8
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni MaucheriteNi11As8
Ni Cobaltpentlandite(Co,Ni,Fe)9S8
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu ChalcociteCu2S
Cu TenoriteCuO
Cu CupriteCu2O
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Cu MalachiteCu2(CO3)(OH)2
Cu Melanterite var. Copper-bearing Melanterite(Fe,Cu)SO4 · 7H2O
ZnZinc
Zn SphaleriteZnS
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As CobaltiteCoAsS
As ErythriteCo3(AsO4)2 · 8H2O
As MaucheriteNi11As8
AuGold
Au GoldAu
BiBismuth
Bi BismuthBi

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Aubury, Lewis E. (1902), The copper resources of California: California Mining Bureau Bulletin 23: 115.
Eakle, Arthur Starr (1922), Massive troilite from Del Norte County, California: American Mineralogist: 7: 77-80.
Maxson, John Haviland (1933), Economic geology of portions of Del Norte and Siskiyou Counties, northwesternmost California: California Division Mines Report 29: 148.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 128, 360.
Snetsinger, K.G. (1973) Ferroan starkeyite from Del Norte County, California. Canadian Mineralogist: 12: 229.
Snetsinger, K.G. (1975) What’s in a name: starkeyite vs. leonhardite. Mineralogical Record: 6: 144-145.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 71, 78, 97, 183, 266, 271.
California Geology (1995): 48(5): 119.

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North America PlateTectonic Plate

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