SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Polk Co., Arkansas, USAi
Regional Level Types
Polk Co.County
ArkansasState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Locality type:
Largest Settlements:
PlacePopulation
Mena5,653 (2017)
Wickes734 (2017)
Grannis562 (2017)
Hatfield403 (2017)
Cove373 (2017)
Other Languages:
French:
Comté de Polk, Arkansas, États-Unis
German:
Polk County, Arkansas, Vereinigte Staaten
Italian:
Contea di Polk, Arkansas, Stati Uniti d'America
Russian:
Полк, Арканзас, Соединённые Штаты Америки
Simplified Chinese:
波爾克縣, 阿肯色州, 美国
Spanish:
Condado de Polk, Arkansas, Estados Unidos
Albanian:
Polk County, Arkansas, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة بولك, أركنساس, الولايات المتحدة
Armenian:
Փոլկի շրջան, Արկանզաս, Ամերիկայի Միացյալ Նահանգներ
Basque:
Polk konderria, Arkansas
Bavarian:
Polk County, Arkansas, Vaoanigte Stootn
Bishnupriya Manipuri:
পোলক কাউন্টি, আরকান্‌সাস, তিলপারাষ্ট্র
Bulgarian:
Полк, Арканзас, Съединени американски щати
Cebuano:
Polk County, Arkansas
Dutch:
Polk County, Arkansas, Verenigde Staten
Estonian:
Polki maakond, Arkansas, Ameerika Ühendriigid
Farsi/Persian:
شهرستان پولک، آرکانزاس, آرکانزاس, ایالات متحده آمریکا
Hungarian:
Polk megye, Arkansas, Amerikai Egyesült Államok
Irish Gaelic:
Contae Polk, Arkansas, Stáit Aontaithe Mheiriceá
Japanese:
ポーク郡, アーカンソー州, アメリカ合衆国
Latin:
Polk Comitatus, Arcansia, Civitates Foederatae Americae
Low Saxon/Low German:
Polk County, Arkansas, USA
Min Dong Chinese:
Polk Gông, Arkansas
Norwegian:
Polk County, Arkansas, USA
Polish:
Hrabstwo Polk, Arkansas, Stany Zjednoczone
Portuguese:
Condado de Polk, Arkansas, Estados Unidos
Romanian:
Comitatul Polk, Arkansas, Statele Unite ale Americii
Serbian:
Округ Полк, Арканзас, Сједињене Америчке Државе
Serbo-Croatian:
Polk County, Arkansas, Sjedinjene Američke Države
Swedish:
Polk County, Arkansas, USA
Ukrainian:
Полк, Арканзас, Сполучені Штати Америки
Urdu:
پوک کاؤنٹی، آرکنساس, آرکنساس, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Polk, Arkansas, Chủng Quốc Hoa Kỳ
Waray:
Condado han Polk, Arkansas, Estados Unidos
Western Punjabi:
پولک کاؤنٹی، آرکنساس, آرکانساس, امریکہ


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

27 valid minerals. 1 erroneous literature entry.

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Baryte
Formula: BaSO4
Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Localities: Reported from at least 8 localities in this region.
'Chert var: Novaculite'
Reference: Arkansas Archeological Survey (2015) Arkansas Novaculite
'Chlorite Group'
Reference: Rocks and Minerals, (1988) 63:104-125
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Localities: Reported from at least 16 localities in this region.
Diadochite ?
Formula: Fe3+2(PO4)(SO4)(OH) · 5H2O
Reference: Am Min 51:1811-1814
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Eleonorite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
Goethite
Formula: α-Fe3+O(OH)
'Halloysite'
Formula: Al2(Si2O5)(OH)4
Reference: Rocks & Min.: 63:120.
Hematite
Formula: Fe2O3
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Rocks & Min.: 63:120.
Kidwellite
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
'Laubmannite'
Formula: (Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12
'Laubmannite (of Moore)'
Formula: (Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
'Limonite'
Formula: (Fe,O,OH,H2O)
Lipscombite
Formula: Fe2+Fe3+2(PO4)2(OH)2
Reference: Rocks and Minerals, (1988) 63:104-125
Lithiophorite
Formula: (Al,Li)MnO2(OH)2
Reference: Arkansas Geological Survey
Magnesite
Formula: MgCO3
Magnesite var: Ferroan Magnesite
Formula: (Mg,Fe)CO3
Manganite
Formula: Mn3+O(OH)
Localities: Reported from at least 14 localities in this region.
Opal
Formula: SiO2 · nH2O
Phosphosiderite
Formula: FePO4 · 2H2O
Description: Occurs in fractures in Arkansas Novaculite.
Reference: Rocks & Min.:64:297-298.
Planerite
Formula: Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 15 localities in this region.
Quartz
Formula: SiO2
Quartz var: Rock Crystal
Formula: SiO2
Reference: Rocks & Min.: 63:120.
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Rocks and Minerals, (1988) 63:104-125
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Localities: Reported from at least 6 localities in this region.
Romanèchite ?
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
Reference: Rocks and Minerals, (1988) 63:104-125
Sigloite
Formula: Fe3+Al2(PO4)2(OH)3 · 7H2O
Reference: Josef Vajdak (2002) Mineral News, 18, #1, 6.
Stannite
Formula: Cu2FeSnS4
Reference: Jay Ellis Ransom,1974, Gems and Minerals of America
Strengite
Formula: FePO4 · 2H2O
Turquoise
Formula: Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Variscite
Formula: AlPO4 · 2H2O
Reference: Rocks & Min.:63:118.
'Wad'
Reference: Am Min 51:1811-1814
Wavellite
Formula: Al3(PO4)2(OH,F)3 · 5H2O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Stannite2.CB.15aCu2FeSnS4
Group 4 - Oxides and Hydroxides
Cryptomelane4.DK.05aK(Mn4+7Mn3+)O16
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Lithiophorite4.FE.25(Al,Li)MnO2(OH)2
Manganite4.FD.15Mn3+O(OH)
Opal4.DA.10SiO2 · nH2O
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Romanèchite ?4.DK.10(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 5 - Nitrates and Carbonates
Magnesite5.AB.05MgCO3
var: Ferroan Magnesite5.AB.05(Mg,Fe)CO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
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
Diadochite ?8.DB.05Fe3+2(PO4)(SO4)(OH) · 5H2O
Dufrénite8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Kidwellite8.DK.20NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Lipscombite8.BB.90Fe2+Fe3+2(PO4)2(OH)2
Phosphosiderite8.CD.05FePO4 · 2H2O
Planerite8.DD.15Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
Rockbridgeite8.BC.10Fe2+Fe3+4(PO4)3(OH)5
Sigloite8.DC.30Fe3+Al2(PO4)2(OH)3 · 7H2O
Strengite8.CD.10FePO4 · 2H2O
Turquoise8.DD.15Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Variscite8.CD.10AlPO4 · 2H2O
Wavellite8.DC.50Al3(PO4)2(OH,F)3 · 5H2O
Group 9 - Silicates
'Halloysite'9.ED.10Al2(Si2O5)(OH)4
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Chert
var: Novaculite'
-
'Chlorite Group'-
Eleonorite-Fe3+6(PO4)4O(OH)4 · 6H2O
'Laubmannite'-(Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12
'Laubmannite (of Moore)'-(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
'Limonite'-(Fe,O,OH,H2O)
'Wad'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Stannite2.9.2.1Cu2FeSnS4
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Manganite6.1.3.1Mn3+O(OH)
Miscellaneous
Lithiophorite6.4.1.1(Al,Li)MnO2(OH)2
Group 7 - MULTIPLE OXIDES
AB8X16
Cryptomelane7.9.1.2K(Mn4+7Mn3+)O16
Romanèchite ?7.9.2.1(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Magnesite14.1.1.2MgCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Variscite40.4.1.1AlPO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)3Zq
Rockbridgeite41.9.2.1Fe2+Fe3+4(PO4)3(OH)5
(AB)3(XO4)2Zq
Lipscombite41.10.2.1Fe2+Fe3+2(PO4)2(OH)2
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
Planerite42.9.3.6Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
Turquoise42.9.3.1Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
A3(XO4)2Zq·xH2O
Wavellite42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O
(AB)3(XO4)2Zq·xH2O
Beraunite ?42.11.16.1Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Sigloite42.11.14.3Fe3+Al2(PO4)2(OH)3 · 7H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Group 43 - COMPOUND PHOSPHATES, ETC.
Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Diadochite ?43.5.2.1Fe3+2(PO4)(SO4)(OH) · 5H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
'Halloysite'71.1.1.4Al2(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
'Chert
var: Novaculite'
-
'Chlorite Group'-
Eleonorite-Fe3+6(PO4)4O(OH)4 · 6H2O
Kaolinite-Al2(Si2O5)(OH)4
'Laubmannite'-(Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12
'Laubmannite (of Moore)'-(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
'Limonite'-(Fe,O,OH,H2O)
Magnesite
var: Ferroan Magnesite
-(Mg,Fe)CO3
Quartz
var: Rock Crystal
-SiO2
var: Smoky Quartz-SiO2
'Wad'-

List of minerals for each chemical element

HHydrogen
H RockbridgeiteFe2+Fe43+(PO4)3(OH)5
H ManganiteMn3+O(OH)
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H VarisciteAlPO4 · 2H2O
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
H OpalSiO2 · nH2O
H Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
H DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
H KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
H PhosphosideriteFePO4 · 2H2O
H StrengiteFePO4 · 2H2O
H PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
H TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
H Goethiteα-Fe3+O(OH)
H HalloysiteAl2(Si2O5)(OH)4
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
H Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
H LipscombiteFe2+Fe23+(PO4)2(OH)2
H Lithiophorite(Al,Li)MnO2(OH)2
H EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
H DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
H Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
H BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
LiLithium
Li Lithiophorite(Al,Li)MnO2(OH)2
CCarbon
C Magnesite (var: Ferroan Magnesite)(Mg,Fe)CO3
C MagnesiteMgCO3
OOxygen
O RockbridgeiteFe2+Fe43+(PO4)3(OH)5
O PyrolusiteMn4+O2
O CryptomelaneK(Mn74+Mn3+)O16
O ManganiteMn3+O(OH)
O QuartzSiO2
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O VarisciteAlPO4 · 2H2O
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
O OpalSiO2 · nH2O
O Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
O DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
O KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
O PhosphosideriteFePO4 · 2H2O
O StrengiteFePO4 · 2H2O
O PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
O TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
O Goethiteα-Fe3+O(OH)
O HalloysiteAl2(Si2O5)(OH)4
O KaoliniteAl2(Si2O5)(OH)4
O BaryteBaSO4
O Quartz (var: Rock Crystal)SiO2
O Magnesite (var: Ferroan Magnesite)(Mg,Fe)CO3
O Limonite(Fe,O,OH,H2O)
O SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
O Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
O HematiteFe2O3
O Quartz (var: Smoky Quartz)SiO2
O LipscombiteFe2+Fe23+(PO4)2(OH)2
O Lithiophorite(Al,Li)MnO2(OH)2
O MagnesiteMgCO3
O EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
O DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
O Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
O BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
FFluorine
F WavelliteAl3(PO4)2(OH,F)3 · 5H2O
NaSodium
Na KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
MgMagnesium
Mg Magnesite (var: Ferroan Magnesite)(Mg,Fe)CO3
Mg MagnesiteMgCO3
AlAluminium
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Al VarisciteAlPO4 · 2H2O
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Al PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
Al TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Al HalloysiteAl2(Si2O5)(OH)4
Al KaoliniteAl2(Si2O5)(OH)4
Al SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
Al Lithiophorite(Al,Li)MnO2(OH)2
SiSilicon
Si QuartzSiO2
Si OpalSiO2 · nH2O
Si HalloysiteAl2(Si2O5)(OH)4
Si KaoliniteAl2(Si2O5)(OH)4
Si Quartz (var: Rock Crystal)SiO2
Si Quartz (var: Smoky Quartz)SiO2
PPhosphorus
P RockbridgeiteFe2+Fe43+(PO4)3(OH)5
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
P VarisciteAlPO4 · 2H2O
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
P Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
P DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
P KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
P PhosphosideriteFePO4 · 2H2O
P StrengiteFePO4 · 2H2O
P PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
P TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
P SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
P Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
P LipscombiteFe2+Fe23+(PO4)2(OH)2
P EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
P DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
P BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
SSulfur
S BaryteBaSO4
S StanniteCu2FeSnS4
S DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
KPotassium
K CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Ca Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
Ca DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
MnManganese
Mn PyrolusiteMn4+O2
Mn CryptomelaneK(Mn74+Mn3+)O16
Mn ManganiteMn3+O(OH)
Mn Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
Mn Lithiophorite(Al,Li)MnO2(OH)2
Mn Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
FeIron
Fe RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe Laubmannite(Fe2+,Mn2+,Ca)3Fe63+(PO4)4(OH)12
Fe DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Fe PhosphosideriteFePO4 · 2H2O
Fe StrengiteFePO4 · 2H2O
Fe TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Fe Goethiteα-Fe3+O(OH)
Fe Magnesite (var: Ferroan Magnesite)(Mg,Fe)CO3
Fe StanniteCu2FeSnS4
Fe Limonite(Fe,O,OH,H2O)
Fe SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
Fe Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
Fe HematiteFe2O3
Fe LipscombiteFe2+Fe23+(PO4)2(OH)2
Fe EleonoriteFe63+(PO4)4O(OH)4 · 6H2O
Fe DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
Fe BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
CuCopper
Cu TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Cu StanniteCu2FeSnS4
Cu Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
SnTin
Sn StanniteCu2FeSnS4
BaBarium
Ba BaryteBaSO4
Ba Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Polk_County,_Arkansas
Wikidata ID:Q61368
GeoNames ID:4127017

Localities in this Region

Other Regions, Features and Areas that Intersect

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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 23, 2019 09:42:08 Page generated: October 19, 2019 19:18:49
Go to top of page