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Augusta Ridge phosphate locality, Cherokee Co., Alabama, USAi
Regional Level Types
Augusta Ridge phosphate localityPit (Inactive)
Cherokee Co.County

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Latitude & Longitude (WGS84): 33° 58' 30'' North , 85° 28' 26'' West
Latitude & Longitude (decimal): 33.97500,-85.47400
GeoHash:G#: dn51qbzwx
Locality type:Pit (Inactive) - last checked 2018
Köppen climate type:Cfa : Humid subtropical climate

Discussions with Jim Stoops at the recent Central US Micromineral Symposium in Clarksville, Indiana have shed more light on the exact location of the Augusta Ridge phosphate locality. Jim has collected there and recalls that the Pinhoti Trail that the late Dr. Henry Barwood referenced actually comes off US 278/AL 74. He and I perused Mindat and Google Earth and believe now that the Augusta Ridge locality corresponds to an Unnamed Iron locality in Mindat with an ID of MRDS-10136405. Revised coordinates for the Augusta Ridge locality are: 33.975, -85.474.

Regions containing this locality

North America Plate

Plate - 4,950 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

8 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Description: IMA nomenclature revision re-instated eleonorite as the ferric dominant member of the group. 2015
Reference: Rob Lavinsky
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Reference: Henry Barwood
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Rob Lavinsky
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
Reference: IMA nomenclature revision re-instated eleonorite as the ferric dominant member of the group. 2015
Formula: Al3(PO4)2(OH)2F·5H2O
Reference: Kampf,Anthony R., Adams,Paul L., Barwood,Henry., and Nash,Barbara P. (2017) Fluorwavellite -Al3(PO4)2(OH)2F.5H2O,the fluorine analogue of wavellite :American Mineralogist 102 (4),909-915
Formula: Fe
Reference: From USGS MRDS database
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Reference: Henry Barwood
Formula: NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Henry Barwood
Formula: FePO4 · 2H2O
Reference: Henry Barwood
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Reference: Henry Barwood

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
'Beraunite' ?8.DC.27Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
'Cacoxenite'8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
'Dufrénite'8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
'Kidwellite'8.DK.20NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
'Natrodufrénite'8.DK.15NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
'Strengite'8.CD.10FePO4 · 2H2O
'Wavellite'8.DC.50Al3(PO4)2(OH,F)3 · 5H2O
Unclassified Minerals, Rocks, etc.
'Eleonorite'-Fe3+6(PO4)4O(OH)4 · 6H2O

List of minerals arranged by Dana 8th Edition classification

Strengite40.4.1.2FePO4 · 2H2O
Kidwellite42.8.2.1NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Dufrénite42.9.1.2Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Natrodufrénite42.9.1.3NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Wavellite42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O
Beraunite ? · 6H2O
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Unclassified Minerals, Rocks, etc.
Eleonorite-Fe3+6(PO4)4O(OH)4 · 6H2O

List of minerals for each chemical element

H BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
H EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
H FluorwavelliteAl3(PO4)2(OH)2F·5H2O
H KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
H NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
H StrengiteFePO4 · 2H2O
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
O BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
O EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
O FluorwavelliteAl3(PO4)2(OH)2F·5H2O
O KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
O NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
O StrengiteFePO4 · 2H2O
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
F FluorwavelliteAl3(PO4)2(OH)2F·5H2O
F WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Na KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Na NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Al FluorwavelliteAl3(PO4)2(OH)2F·5H2O
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
P BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
P DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
P EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
P FluorwavelliteAl3(PO4)2(OH)2F·5H2O
P KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
P NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
P StrengiteFePO4 · 2H2O
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Ca DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
Fe KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Fe NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe StrengiteFePO4 · 2H2O

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

251.902 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 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]

485.4 - 541 Ma

ID: 2720534
Weisner and Wilson Ridge Formations undifferentiated

Age: Cambrian (485.4 - 541 Ma)

Stratigraphic Name: Weisner Formation; Ridge Formation

Description: Interbedded quartzose to slightly feldspathic sandstone and laterally continous conglomerate in ledge-forming units seperated by greenish-gray silty mudstone.

Comments: Original map source: Geological Survey of Alabama, 2006, GSA Special Map Series 220A, scale 1:250,000.

Lithology: Major:{sandstone,conglomerate}, Minor:{mudstone}

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

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