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Little Horn Mountains, Yuma County, Arizona, USAi
Regional Level Types
Little Horn MountainsMountain Range
Yuma CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
33° 21' 49'' North , 113° 41' 7'' West
Latitude & Longitude (decimal):
33.36361,-113.68528
GeoHash:
G#: 9mzjv18vj
GRN:
N23W68
Locality type:
Mountain Range
KΓΆppen climate type:
BWh : Hot deserts climate


A Au-Ag-Pb-Mn deposits area.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

17 valid minerals.

Detailed Mineral List:

β“˜ Anglesite
Formula: PbSO4
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 140.
β“˜ Aragonite
Formula: CaCO3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 164.
β“˜ Aurorite
Formula: Mn2+Mn4+3O7 · 3H2O
Description: Occurs in black calcite veins.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 124; Cousins, N.B. (1972), Relationship of black calcite to gold and silver mineralization in the Sheep Tanks mining district, Yuma Co., AZ, AZ State Univ. M.S. thesis.
β“˜ Baryte
Formula: BaSO4
Description: Irregular, vein-like masses in places; crystalline, cutting earlier qartz.
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 174 (Table 4); Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 132-140.
β“˜ Calcite
Formula: CaCO3
Localities: Reported from at least 9 localities in this region.
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 173 (Table 4); Farnham & Stewart (1958): 87.
β“˜ Calcite var. Manganese-bearing Calcite
Formula: (Ca,Mn)CO3
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 146; Wilson, E.D. (1933), AZ Bur. of Mines Bull. 134: 139.
β“˜ Cerussite
Formula: PbCO3
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 140.
β“˜ Chalcophanite
Formula: ZnMn4+3O7 · 3H2O
Habit: Tabular
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 164.
β“˜ 'Chlorite Group'
Description: Occurs in altered andesite wall rocks.
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 146-147.
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Description: Veinlets and blebs.
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 132-140; Wilson, E.D., et al (1934)(revised 1967), AZ Bur. Mines Bull. 137: 144-145.
β“˜ Galena
Formula: PbS
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 133, 140.
β“˜ Galena var. Silver-bearing Galena
Formula: PbS with Ag
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 133, 140.
β“˜ Gold
Formula: Au
Description: A little in wall rocks.
Reference: Wilson, E.D. (1933), AZ Bur. of Mines Bull. 134: 139-140.
β“˜ Groutite
Formula: Mn3+O(OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 240; Cousins, N.B. (1972), Relationship of black calcite to gold and silver mineralization in the Sheep Tanks mining district, Yuma Co., AZ, AZ State Univ. M.S. thesis.
β“˜ Hematite
Formula: Fe2O3
Description: As fine specks.
Reference: Wilson, E.D. (1933), AZ Bur. Mines Bull. 134: 132-140.
β“˜ Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 164.
β“˜ 'K Feldspar'
Formula: KAlSi3O8
Description: Occurs in a gold-quartz vein.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 88.
β“˜ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
Description: Occurs in a gold-quartz vein.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 88.
β“˜ 'Limonite'
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 174 (Table 4); Wilson, E.D. (1933): 140-141; Wilson, E.D. (1934)(revised 1967): 146-147; Arizona Bureau of Mines file data.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs in altered andesite wall rocks.
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 146-147.
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs in altered andesite wall rocks.
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 146-147.
β“˜ 'Psilomelane'
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 173 (Table 4); Farnham & Stewart (1958): 87.
β“˜ Pyrolusite
Formula: Mn4+O2
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 173 (Table 4); Farnham & Stewart (1958): 87.
β“˜ Quartz
Formula: SiO2
Colour: Pinkish-gray
Description: Dense-textured.
Reference: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 146-147.
β“˜ Rhodochrosite
Formula: MnCO3
Colour: Brown
Description: As veins in black-banded calcite veins.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 353; Cousins, N.B. (1972), Relationship of black calcite to gold and silver mineralization in the Sheep Tanks mining district, Yuma Co., AZ, AZ State Univ. M.S. thesis.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Galena2.CD.10PbS
β“˜var. Silver-bearing Galena2.CD.10PbS with Ag
Group 4 - Oxides and Hydroxides
β“˜Aurorite4.FL.20Mn2+Mn4+3O7 Β· 3H2O
β“˜Chalcophanite4.FL.20ZnMn4+3O7 Β· 3H2O
β“˜Groutite4.FD.10Mn3+O(OH)
β“˜Hematite4.CB.05Fe2O3
β“˜Hollandite4.DK.05aBa(Mn4+6Mn3+2)O16
β“˜Pyrolusite4.DB.05Mn4+O2
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Aragonite5.AB.15CaCO3
β“˜Calcite5.AB.05CaCO3
β“˜var. Manganese-bearing Calcite5.AB.05(Ca,Mn)CO3
β“˜Cerussite5.AB.15PbCO3
β“˜Rhodochrosite5.AB.05MnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Anglesite7.AD.35PbSO4
β“˜Baryte7.AD.35BaSO4
Group 9 - Silicates
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
β“˜'Chlorite Group'-
β“˜'K Feldspar'-KAlSi3O8
β“˜'var. Adularia'-KAlSi3O8
β“˜'Limonite'-
β“˜'Psilomelane'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ ChalcophaniteZnMn34+O7 · 3H2O
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hβ“˜ AuroriteMn2+Mn34+O7 · 3H2O
Hβ“˜ GroutiteMn3+O(OH)
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ AragoniteCaCO3
Cβ“˜ CerussitePbCO3
Cβ“˜ RhodochrositeMnCO3
Cβ“˜ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
OOxygen
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ CalciteCaCO3
Oβ“˜ BaryteBaSO4
Oβ“˜ ChalcophaniteZnMn34+O7 · 3H2O
Oβ“˜ HollanditeBa(Mn64+Mn23+)O16
Oβ“˜ AragoniteCaCO3
Oβ“˜ QuartzSiO2
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ AnglesitePbSO4
Oβ“˜ CerussitePbCO3
Oβ“˜ AuroriteMn2+Mn34+O7 · 3H2O
Oβ“˜ GroutiteMn3+O(OH)
Oβ“˜ K Feldspar var. AdulariaKAlSi3O8
Oβ“˜ HematiteFe2O3
Oβ“˜ RhodochrositeMnCO3
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ K FeldsparKAlSi3O8
AlAluminium
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alβ“˜ K Feldspar var. AdulariaKAlSi3O8
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ K FeldsparKAlSi3O8
SiSilicon
Siβ“˜ QuartzSiO2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siβ“˜ K Feldspar var. AdulariaKAlSi3O8
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ K FeldsparKAlSi3O8
SSulfur
Sβ“˜ BaryteBaSO4
Sβ“˜ Galena var. Silver-bearing GalenaPbS with Ag
Sβ“˜ AnglesitePbSO4
Sβ“˜ GalenaPbS
KPotassium
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Kβ“˜ K Feldspar var. AdulariaKAlSi3O8
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ K FeldsparKAlSi3O8
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ AragoniteCaCO3
Caβ“˜ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
MnManganese
Mnβ“˜ PyrolusiteMn4+O2
Mnβ“˜ ChalcophaniteZnMn34+O7 · 3H2O
Mnβ“˜ HollanditeBa(Mn64+Mn23+)O16
Mnβ“˜ AuroriteMn2+Mn34+O7 · 3H2O
Mnβ“˜ GroutiteMn3+O(OH)
Mnβ“˜ RhodochrositeMnCO3
Mnβ“˜ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
FeIron
Feβ“˜ HematiteFe2O3
CuCopper
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
ZnZinc
Znβ“˜ ChalcophaniteZnMn34+O7 · 3H2O
AgSilver
Agβ“˜ Galena var. Silver-bearing GalenaPbS with Ag
BaBarium
Baβ“˜ BaryteBaSO4
Baβ“˜ HollanditeBa(Mn64+Mn23+)O16
AuGold
Auβ“˜ GoldAu
PbLead
Pbβ“˜ Galena var. Silver-bearing GalenaPbS with Ag
Pbβ“˜ AnglesitePbSO4
Pbβ“˜ CerussitePbCO3
Pbβ“˜ GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 131-132.
Demsey, K.A. (1990) Geologic map of Quaternary and upper Tertiary alluvium in the Little Horn Mountains 30' x 60' quadrangle, Arizona: Arizona Geological Survey Open-File Report 90-08, 1 sheet, scale 1:100,000.
Grubensky, M.J., and Demsey, K.A. (1991) Geologic map of the Little Horn Mountains 15' quadrangle, southwestern Arizona [Little Horn Mts. SE, Cementosa Wash, Little Horn Mts. NE, Coyote Peak 7.5 min]: Arizona Geological Survey Map M-29, 10 p., 1 sheet, scale 1:50,000.
Spencer, J.E., comp. (1995) Geologic map of the Little Horn Mountains 30' x 60' quadrangle, southwestern Arizona: Arizona Geological Survey Open-File Report 95-01, 10 p., 1 sheet, scale 1:100,000.

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