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Eagle Tail Mining District, Eagletail Mts (Cemetary Ridge), La Paz County, Arizona, USAi
Regional Level Types
Eagle Tail Mining DistrictMining District
Eagletail Mts (Cemetary Ridge)Mountain Range
La Paz CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
33° North , 113° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
GRN:
N23W68
Type:
Mining District
KΓΆppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
33439
Long-form identifier:
mindat:1:2:33439:9
GUID (UUID V4):
de8a5e13-5108-48e9-a235-f41dddcee013


A Cu-Pb-Zn-Au-Ag-Mn-Fe-Ba-actinolite asbestos mining area located in T2N - T1S, R11W - R12W, in the Eagle Tail Mountains and Cemetery Ridge.

Mineralization is varied: (1) spotty and weak, mostly oxidized copper, lead and zinc ores with some gold and silver values, in veins, veinlets, pods and disseminations with quartz, calcite, and barite gangue, in fissure and fracture zones cutting Cretaceous or Tertiary volcanics and Precambrian intrusive; (2) Spotty and weak copper mineralization and staining, with minor gold and silver, and a gangue of iron and manganese oxides, quartz, gouge, and brecciated wall rock along fractures and faults cutting Mesozoic schist, Precambrian granite, and Cretaceous or Tertiary rhyolite porphyry and hornblendite dikes; (3) Spotty pyrolusite and psilomelane mixed with jasper, calcite and quartz, in irregularly-spaced, lenticular bodies of stringers and veins in brecciated Cretaceous or Tertiary andesite flows and tuff, and in gneissic granodiorite intruded by granite; and, (4) Long fiber, but very brittle, asbestiform actinolite in lensing veins in Mesozoic schist near irregular dikes consisting mainly of actinolite, partly altered to chlorite, and veinlets and masses of magnetite.



Workings are mostly shallow prospects. No recorded production of precious or base metals. About 40 tons of sorted 22% Mn ore was produced in 1953.

Select Mineral List Type

Standard Detailed Gallery Strunz 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

15 valid minerals.

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Habit: Bladed
Colour: Green
Description: Occurs in amphibolite dikes with an asbestosform texture, developed in schist in veins a few inches (about 5 cm) to 1 foot (0.3 meters) wide.
β“˜ Baryte
Formula: BaSO4
β“˜ Calcite
Formula: CaCO3
β“˜ Chalcopyrite
Formula: CuFeS2
Description: Present as a few thin veinlets.
β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Description: Alteration product of chalcopyrite near the surface.
β“˜ Cuprotungstite
Formula: Cu2(WO4)(OH)2
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Description: Alteration product of hornblendite near veinlets in dike.
β“˜ Gold
Formula: Au
β“˜ Hematite
Formula: Fe2O3
β“˜ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
Description: Coarsely crystalline in a hornblendite dike.
β“˜ 'Jasper'
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Description: Occurs as veinlets & small, irregular masses in intrusive actinolite-rich dikes.
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Description: Alteration product of chalcopyrite near the surface.
β“˜ 'Psilomelane'
β“˜ Pyrolusite
Formula: Mn4+O2
β“˜ Quartz
Formula: SiO2
β“˜ Scheelite
Formula: Ca(WO4)
β“˜ Stolzite
Formula: Pb(WO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Chalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜Pyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
β“˜Stolzite7.GA.05Pb(WO4)
β“˜Scheelite7.GA.05Ca(WO4)
β“˜Cuprotungstite7.GB.15Cu2(WO4)(OH)2
Group 9 - Silicates
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
Unclassified
β“˜'Psilomelane'-
β“˜'Jasper'-
β“˜'Chlorite Group'-
β“˜'Hornblende Root Name Group'-β—»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ CuprotungstiteCu2(WO4)(OH)2
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ BaryteBaSO4
Oβ“˜ CalciteCaCO3
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ CuprotungstiteCu2(WO4)(OH)2
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ QuartzSiO2
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ StolzitePb(WO4)
Oβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FFluorine
Fβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
AlAluminium
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ QuartzSiO2
Siβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SSulfur
Sβ“˜ BaryteBaSO4
Sβ“˜ ChalcopyriteCuFeS2
ClChlorine
Clβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ ScheeliteCa(WO4)
Caβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
MnManganese
Mnβ“˜ PyrolusiteMn4+O2
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ MagnetiteFe2+Fe23+O4
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ CuprotungstiteCu2(WO4)(OH)2
Cuβ“˜ MalachiteCu2(CO3)(OH)2
BaBarium
Baβ“˜ BaryteBaSO4
WTungsten
Wβ“˜ CuprotungstiteCu2(WO4)(OH)2
Wβ“˜ ScheeliteCa(WO4)
Wβ“˜ StolzitePb(WO4)
AuGold
Auβ“˜ GoldAu
PbLead
Pbβ“˜ StolzitePb(WO4)

Localities in this Region

USA
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Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

(1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. University of Arizona Bulletin 134. Arizona Bureau of Minespp.142-143
Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, US Bureau of Mines Information Circular 7843: 84.
Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 145 (Table 4).
(n.d.) ADMMR Mines Database, Arizona Geological Survey.
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