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Arkansas Mountain, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USAi
Regional Level Types
Arkansas MountainMountain
New Cornelia MineMine (Inactive)
AjoUnincorporated Community
Little Ajo MountainsMountain Range
Ajo Mining DistrictMining District
Pima CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
32° 21' 11'' North , 112° 52' 19'' West
Latitude & Longitude (decimal):
32.35333,-112.87222
GeoHash:
G#: 9mz8p98zy
GRN:
N22W68
Type:
Mountain
Köppen climate type:
BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Ajo3,304 (2011)2.3km
Why167 (2017)15.7km
Colinas de Sonoidag289 (2014)52.2km
Adolfo López Mateos201 (2014)54.6km
Sonoita12,849 (2018)54.7km
Mindat Locality ID:
64319
Long-form identifier:
mindat:1:2:64319:0
GUID (UUID V4):
1dc0f373-077c-45cf-9b77-6bb4fc984fac


Mineralization is reported from the north slope of the mountain.

Mineralization is in a weathered and copper-stained quartz keratophyre.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Description: In veins cutting the Concentrator volcanics.
ⓘ Baryte
Formula: BaSO4
Description: Irregular veins cutting the Concentrator volcanics.
ⓘ Hematite
Formula: Fe2O3
Description: In veins cutting the Concentrator volcanics.
ⓘ Hematite var. Specularite
Formula: Fe2O3
Description: In veins cutting the Concentrator volcanics.
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
Description: Occurs in a weathered and copper-stained quartz keratophyre.
ⓘ Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Colour: Brownish
Description: Coats malachite in a weathered copper-stained quartz keratophyre.
ⓘ 'Potash Clay'
Description: Occurs in a weathered, copper-stained quartz keratophyre.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘvar. Specularite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘNontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Unclassified
ⓘ'Potash Clay'-

List of minerals for each chemical element

HHydrogen
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ BaryteBaSO4
Oⓘ HematiteFe2O3
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ Hematite var. SpeculariteFe2O3
NaSodium
Naⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Alⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Siⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SSulfur
Sⓘ BaryteBaSO4
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ HematiteFe2O3
Feⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Feⓘ Hematite var. SpeculariteFe2O3
CuCopper
Cuⓘ MalachiteCu2(CO3)(OH)2
BaBarium
Baⓘ BaryteBaSO4

Other Regions, Features and Areas containing this locality

Mexico
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

Gilluly, J. (1946) The Ajo mining district, Arizona. United States Geological Survey Professional Paper 209: 96.
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