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Three Oaks Gap workings (Arena 1 prospect), Three Oaks Gap, Polk Co., Arkansas, USAi
Regional Level Types
Three Oaks Gap workings (Arena 1 prospect)Workings
Three Oaks GapGap
Polk Co.County
ArkansasState
USACountry

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Key
Latitude & Longitude (WGS84):
34° North , 94° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~4km
Locality type:
Köppen climate type:


Ref.: Rocks & Minerals: 63: 120.

A manganese prospect discovered in 1983. Ore is in fractured Arkansas Novaculite. Workings are a small cut.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Description: IMA nomenclature revision for ferric iron dominant members of the beraunite group.
Reference: Rocks & Minerals: 63: 120.
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Reference: Rocks & Minerals: 63: 120.
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Rocks & Minerals: 63: 120.
Eleonorite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
Reference: IMA revision of the beraunite group
Goethite
Formula: α-Fe3+O(OH)
Reference: Rocks & Minerals: 63: 120.
Kidwellite
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Reference: Rocks & Minerals: 63: 120.
'Laubmannite'
Formula: (Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12
Reference: Rocks & Minerals: 63: 120.
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Reference: Rocks & Minerals: 63: 120.
Strengite
Formula: FePO4 · 2H2O
Reference: Rocks & Minerals: 63: 120.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Group 8 - Phosphates, Arsenates and Vanadates
Beraunite ?8.DC.27Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Cacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Dufrénite8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Kidwellite8.DK.20NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Rockbridgeite8.BC.10Fe2+Fe3+4(PO4)3(OH)5
Strengite8.CD.10FePO4 · 2H2O
Unclassified Minerals, Rocks, etc.
Eleonorite-Fe3+6(PO4)4O(OH)4 · 6H2O
'Laubmannite'-(Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Strengite40.4.1.2FePO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)3Zq
Rockbridgeite41.9.2.1Fe2+Fe3+4(PO4)3(OH)5
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)3Zq·xH2O
Kidwellite42.8.2.1NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
(AB)7(XO4)4Zq·xH2O
Dufrénite42.9.1.2Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
(AB)3(XO4)2Zq·xH2O
Beraunite ?42.11.16.1Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Unclassified Minerals, Mixtures, etc.
Eleonorite-Fe3+6(PO4)4O(OH)4 · 6H2O
'Laubmannite'-(Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12

List of minerals for each chemical element

HHydrogen
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
H KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
H Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
H RockbridgeiteFe2+Fe43+(PO4)3(OH)5
H StrengiteFePO4 · 2H2O
H Goethiteα-Fe3+O(OH)
H EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
H BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
OOxygen
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
O KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
O Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
O RockbridgeiteFe2+Fe43+(PO4)3(OH)5
O StrengiteFePO4 · 2H2O
O Goethiteα-Fe3+O(OH)
O EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
O BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
NaSodium
Na KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
AlAluminium
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
PPhosphorus
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
P DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
P KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
P Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
P RockbridgeiteFe2+Fe43+(PO4)3(OH)5
P StrengiteFePO4 · 2H2O
P EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
P BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
CaCalcium
Ca DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Ca Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
MnManganese
Mn Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
FeIron
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Fe Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
Fe RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Fe StrengiteFePO4 · 2H2O
Fe Goethiteα-Fe3+O(OH)
Fe EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
Fe BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O

Other Regions, Features and Areas containing this locality

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