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Apache Iron deposit, Apache Iron Mining District, Navajo Co., Arizona, USAi
Regional Level Types
Apache Iron depositDeposit
Apache Iron Mining District- not defined -
Navajo Co.County
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
34° 10' 45'' North , 110° 44' 32'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Young666 (2011)22.1km
Cibecue1,713 (2011)28.0km
Christopher Creek156 (2011)29.4km
Heber-Overgaard2,822 (2011)30.6km
Tonto Village256 (2011)38.9km
Other/historical names associated with this locality:
East Apache deposit; Alsace Lorraine Hematite MS3711; Swamp Creek Mountain; Canyon Creek; Silette deposit; Shell Mountain deposit; Nail Ranch deposit; Rock House Deposit


An Fe deposit located principally in the SE¼ sec. 15, T9N, R15½E, G&SRM, Chediski Peak quadrangle (also in secs. 10 & 16), 0.5 mile N of The Pyramids (peak). Discovered in 1895. Explored by the Colorado Fuel and Iron Company (CF&I Steel Corporation) in the 1947-1962 time frame. Active during February, 1962, with 13 workers involved in the exploration. The USGS MRDS database stated accuracy for this location is 100 meters.

Mineralization is an Fe deposit (Mineral occurrence model information: Model code: 241; USGS model code: 34a; BC deposit profile; F10; Deposit model name: Superior Fe [BC name is Lake Superior & Rapitan types iron-formation]) hosted in quartzite and chert. The ore body is stratiform and tabular as irregular masses with a dip of 0 to 17SW, at a thickness of 6.4 meters and a width of 57,934.8 meters, and a length of 144,837 meters. The hematite zone is near the boundary between the white Chediski sandstone of the Troy Formation and the Mescal Limestone, just below a silicified algal zone. The ore is fractured and slickensided and lies in an anticlinal structure.The primary mode of origin was sedimentation and the primary ore control was bedding. Local (wallrock) alteration included silicification and sericitization. Associated rocks include Neoproterozoic sandstone of the Troy Formation (Chediski Sandstone). Local rocks include Middle Proterozoic sedimentary rocks.

The iron ore of the Apache deposit occurs as hematite closely associated with chert and jasper. The ore ranges from soft and earthy to hard and massive. Fracturing and jointing make intermediate types of finely broken to blocky ore. The lower-grade ore is generally harder and more massive.
The specific gravity ranges from 2.55 to 10 percent iron to 4.25 at 62 percent iron, with about 3.60 for 45 percent iron ore.

The iron ore is hematite ranging from soft, pulverulent, bright-red material to hard, dense, dark-blue iron oxide. More or less specularite is present. The association of the iron ore with beds of chert having "curly" or contorted laminations is of significance In connection with the origin of the ore. No limestone was noted anywhere at this horizon, and no oolitic or granular material was noted in the ore which might indicate original deposition as a ferruginous sediment. Much of the ore, however, shows traces of a contorted banding similar to that of the associated chert, a feature which strongly suggests that it originated through replacement of the banded rock by iron compounds.


The ore zone is composed of hematitic beds interlayered with chert, jasperoid, sandstone, and shale. The chert and jasper have replaced sandstone and other rock whose original composition is not now discernible. Most of the hematite is flne-grained and massive. In addition to hematite, the ore contains 3 to 5 percent of sericite and as much as 1 percent apatite. The deposit is believed to be of hydrothermal origin, because some of the hematite replaces jasper and chalcedony. which have replaced part of the original rock. and because hematite and specularite fill vugs and fractures in jasper, in chalcedony, and in the massive hematite. Microscopic examination of lower-grade ore (35.7 percent iron) showed that the iron oxide is intimately associated with silica grains ranging in size from 65 to 200 mesh. The iron oxide also occurs as isolated stringers and veinlets.


Workings include surface openings with a length of 90 meters.

Between 10 & 20 thousand tons have been mined and stockpiled.

An unnamed former employee of CF&I Steel reported the deposit to contain as much as 100 million long tons of iron ore averaging 52-53 percent iron based on exploratory and development work done privately subsequent to the above published reports.

Regions containing this locality

North America PlateTectonic Plate
Fort Apache Indian Reservation, Arizona, USAReservation

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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

4 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:

'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027418.
Hematite
Formula: Fe2O3
Localities: Reported from at least 8 localities in this region.
Hematite var: Specularite
Formula: Fe2O3
Magnetite
Formula: Fe2+Fe3+2O4
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027418.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027418.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: Product of local alteration.
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027418.
Quartz
Formula: SiO2
Quartz var: Jasper

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 9 - Silicates
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Hematite
var: Specularite
-Fe2O3
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Jasper
-SiO2

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O HematiteFe2O3
O Hematite (var: Specularite)Fe2O3
O QuartzSiO2
O MagnetiteFe2+Fe23+O4
O ApatiteCa5(PO4)3(Cl/F/OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Fe HematiteFe2O3
Fe Hematite (var: Specularite)Fe2O3
Fe MagnetiteFe2+Fe23+O4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian
251.902 - 298.9 Ma



ID: 3187666
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Cryogenian - Ectasian
635 - 1400 Ma



ID: 2883699
Middle Proterozoic sedimentary rocks

Age: Proterozoic (635 - 1400 Ma)

Stratigraphic Name: Grand Canyon Supergroup; Chuar Group; Unkar Group; Apache Group; Troy Quartzite

Description: Red-brown shale and sandstone, buff to orange quartzite, limestone, basalt, black shale, and sparse conglomerate. This unit includes the Grand Canyon Supergroup, Apache Group, and Troy Quartzite. These rocks were deposited in shallow marine, coastal nonmarine, and fluvial settings. (700-1300)

Comments: Original map source: Arizona Geological Survey, DI-8 Geologic Map of Arizona, Digital Spatial data for the Geologic Map of Arizona, v. 3.0, edited by S.M. Richard and S.M. Kneale, 2002, 10 p., 2 DOS HD disks. Arc/INFO export file (.e00) format, scale 1:1,000,000.

Lithology: Major:{shale,sandstone,quartzite}, Minor:{limestone,basalt,black shale}, Incidental:{conglomerate}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Burchard, E. F. (1931), Iron Ore on Canyon Creek, Fort Apache Indian Reservation, Arizona; USGS Bulletin 321-C: 51-75.
Butler, Arthur F., Jr. (1943) Swamp Creek Mountain Iron Deposit; USGS Preliminary Report. (January 1943). (Not Available per AZ GS)
Stewart, L. A. (1947), Apache Iron Deposit, Navajo County, Arizona. U. S. Bureau of Mines Report of Investigation. RI4093, 37 p.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 29.
Mining World (1962) (November): 45.
Mining World (1963), Catalog. Survey & Directory Number April 25, 1963: 77.
Engineering and Mining Journal (1964): 165(11) (November, 1964): 129.
Harrer, C.M. (1964), Reconnaissance of Iron Resources in Arizona, US Bureau of Mines Information Circular 8236: 72-80.
World Mining (1964) (December, 1964): 70.
Metal Mining and Processing (1965) (April): 42.
Pay Dirt (1966) (July).
World Mining (1966) (November): 37.
Skillings Mining Review (1966) (8/6/66).
Mining Congress Journal (1967) (February): 7.
Skillings Mining Review (1967) (January 28): 20.
World Mining (1967) (November): 45 .
Moore, R.T. (1968), Mineral Deposits of the Fort Apache Indian Reservation, Arizona, University of Arizona – Arizona Bureau of Mines Bull. 177, 84 p. (includes detailed map showing lease areas).
Sawyer M.B., et al (1992), Principal deposits of strategic and critical minerals in Arizona.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 245-246.
U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS), U.S. Bureau of Mines, file ID #0040170023.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10027418 & 10161818.
Arizona Geological Survey files - Apache Iron Deposit.
USGS Chediski Peak 7.5 minute topo map.
USGS MRDS ID #M003056.
Unnamed former employee of CF&I Steel, personal communication to Arizona Geological Survey.
USGS MRDS ID #'sM003058, M003059, M003055, M003064, M003061.

Localities in this Region
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