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Poniklá, Jilemnice (Starkenbach), Liberec Region, Czech Republic

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Name(s) in local language(s):Poniklá
Latitude & Longitude (WGS84): 50° 40' 9'' North , 15° 28' 10'' East
Latitude & Longitude (decimal): 50.66923,15.46952
GeoHash:G#: u35020099
Köppen climate type:Cfb : Temperate oceanic climate


Residual limonitic ore accumulations in the vicinity of Poniklá are connected with epizonal metamorphic paleozoical rocks (carbonatic and graphitic phyllites and crystalline limestones) od Poniklá Group. They probably originate from iron-rich rocks during weathering in oligocene to miocene (depth of weathering up to 60 m). Major ore mineral is "limonite" accompanied with quartz. Output of this area was more than 56000 t of ore (20-30% Fe). Mines were abandoned by 1850 - iron works burned down and have never been reconstructed.

Note: According to Škoda nad Rus (2010) all dufrenites from this locality should be considered natrodufrenites, according to Jirásek and Matýsek (2010) all limonites (and possibly cacoxenites) from this locality should be considered goethites.

Regions containing this locality

Czechoslovakia

Country (Former) - 1,995 mineral species & varietal names listed

Bohemia (Böhmen; Boehmen), Czech Republic

Region (Historical) - 1,456 mineral species & varietal names listed

Sudetes Mountains (Sudeten; Sudety), Czech Republic/Germany/Poland

Mountain Range - 1,145 mineral species & varietal names listed

West Sudetes Mountains, Sudetes Mountains (Sudeten; Sudety), Czech Republic/Germany/Poland

Mountain Range - 660 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


15 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

'Apatite'
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Calcite
Formula: CaCO3
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Churchite-(Y)
Formula: Y(PO4) · 2H2O
Reference: Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Reference: Jirásek, J., Matýsek, D., Vaculíková, L., Sivek, M.: Hollandit a kryptomelan z Poniklé u Jilemnice, Česká republika. Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, 2015, vol. 23, č. 1, s. 103-108.
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.
Goethite
Formula: α-Fe3+O(OH)
Reference: Jirásek, J., Matýsek, D.: Revize limonitu z Poniklé u Jilemnice. Minerál, 2010, roč. 18, č. 2, s. 116-118.
Hematite
Formula: Fe2O3
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
Reference: Jirásek, J., Matýsek, D., Vaculíková, L., Sivek, M.: Hollandit a kryptomelan z Poniklé u Jilemnice, Česká republika. Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, 2015, vol. 23, č. 1, s. 103-108.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Jirásek, J., Matýsek, D.: Revize limonitu z Poniklé u Jilemnice. Minerál, 2010, roč. 18, č. 2, s. 116-118.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Natrodufrénite
Formula: NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Habit: radial aggregates up to 1,5 cm, tabular csrytals
Colour: black, brown, dark green
Reference: Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.
Planerite
Formula: Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
Reference: research sample of E. E. Foord
'Psilomelane'
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Pyrite
Formula: FeS2
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Pyrolusite
Formula: Mn4+O2
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Quartz
Formula: SiO2
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Reference: Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.
Variscite
Formula: AlPO4 · 2H2O
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168
Wavellite
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Reference: Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Cryptomelane'4.DK.05aK(Mn4+7Mn3+)O16
'Goethite'4.00.α-Fe3+O(OH)
'Hematite'4.CB.05Fe2O3
'Hollandite'4.DK.05aBa(Mn4+6Mn3+2)O16
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Pyrolusite'4.DB.05Mn4+O2
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
'Churchite-(Y)'8.CJ.50Y(PO4) · 2H2O
'Dufrénite' ?8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
'Natrodufrénite'8.DK.15NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
'Planerite'8.DD.15Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
'Rockbridgeite'8.BC.10Fe2+Fe3+4(PO4)3(OH)5
'Variscite'8.CD.10AlPO4 · 2H2O
'Wavellite'8.DC.50Al3(PO4)2(OH,F)3 · 5H2O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Limonite' ?-(Fe,O,OH,H2O)
'Psilomelane'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
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)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
AB8X16
Cryptomelane7.9.1.2K(Mn4+7Mn3+)O16
Hollandite7.9.1.1Ba(Mn4+6Mn3+2)O16
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Churchite-(Y)40.4.6.1Y(PO4) · 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
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)7(XO4)4Zq·xH2O
Dufrénite ?42.9.1.2Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Natrodufrénite42.9.1.3NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Planerite42.9.3.6Al6(PO4)2(HPO4)2(OH)8 · 4 H2O
A3(XO4)2Zq·xH2O
Wavellite42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Limonite' ?-(Fe,O,OH,H2O)
'Psilomelane'-

List of minerals for each chemical element

HHydrogen
H Churchite-(Y)Y(PO4) · 2H2O
H DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
H Goethiteα-Fe3+O(OH)
H Limonite(Fe,O,OH,H2O)
H NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
H PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
H RockbridgeiteFe2+Fe43+(PO4)3(OH)5
H VarisciteAlPO4 · 2H2O
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
O Churchite-(Y)Y(PO4) · 2H2O
O CryptomelaneK(Mn74+Mn3+)O16
O DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O HollanditeBa(Mn64+Mn23+)O16
O Limonite(Fe,O,OH,H2O)
O MagnetiteFe2+Fe23+O4
O NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
O PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
O PyrolusiteMn4+O2
O QuartzSiO2
O RockbridgeiteFe2+Fe43+(PO4)3(OH)5
O VarisciteAlPO4 · 2H2O
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
FFluorine
F WavelliteAl3(PO4)2(OH,F)3 · 5H2O
NaSodium
Na NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
AlAluminium
Al PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
Al VarisciteAlPO4 · 2H2O
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SiSilicon
Si QuartzSiO2
PPhosphorus
P Churchite-(Y)Y(PO4) · 2H2O
P DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
P NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
P PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
P RockbridgeiteFe2+Fe43+(PO4)3(OH)5
P VarisciteAlPO4 · 2H2O
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SSulfur
S PyriteFeS2
KPotassium
K CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Ca CalciteCaCO3
Ca DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
MnManganese
Mn CryptomelaneK(Mn74+Mn3+)O16
Mn HollanditeBa(Mn64+Mn23+)O16
Mn PyrolusiteMn4+O2
FeIron
Fe DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe NatrodufréniteNaFe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe PyriteFeS2
Fe RockbridgeiteFe2+Fe43+(PO4)3(OH)5
YYttrium
Y Churchite-(Y)Y(PO4) · 2H2O
BaBarium
Ba HollanditeBa(Mn64+Mn23+)O16

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: 3191119
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]

Paleozoic
251.902 - 541 Ma



ID: 3134740
Palaeozoic phyllite

Age: Phanerozoic (251.902 - 541 Ma)

Description: undifferentiated metamorphic

Lithology: Major:{phyllite}, Minor{greenschist,marble}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

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)
- Jirásek, J., Matýsek, D.: Revize limonitu z Poniklé u Jilemnice. Minerál, 2010, roč. 18, č. 2, s. 116-118.
- Jirásek, J., Matýsek, D., Vaculíková, L., Sivek, M.: Hollandit a kryptomelan z Poniklé u Jilemnice, Česká republika. Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, 2015, vol. 23, č. 1, s. 103-108.
- Pauliš, P.: Dufrenit z Poniklé v Krkonoších. Minerál, 2003, r. 11, č. 3, str. 166 – 168.
- Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.


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