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Banwell Hill, Banwell, North Somerset, Somerset, England, UKi
Regional Level Types
Banwell HillHill
BanwellCivil Parish
North SomersetUnitary Authority
SomersetCounty
EnglandConstituent Country
UKCounty

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Key
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Latitude & Longitude (WGS84): 51° 19' 24'' North , 2° 52' 47'' West
Latitude & Longitude (decimal): 51.32333,-2.87972
GeoHash:G#: gcjgyrph1
UK National Grid Reference:ST387587
Locality type:Hill
Köppen climate type:Cfb : Temperate oceanic climate


Agate geodes (Potato stones) to be found on exposures flanking the hill with associated mineralisation occurring either inside the stones or on the outer layer.

Regions containing this locality

Eurasia Plate

Plate - 7,320 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Paul Render
Baryte
Formula: BaSO4
Reference: Paul Render
Bornite
Formula: Cu5FeS4
Reference: Paul Render
Calcite
Formula: CaCO3
Reference: Paul Render
Celestine
Formula: SrSO4
Reference: Paul Render
Chalcopyrite
Formula: CuFeS2
Reference: Paul Render
'Chlorite Group'
Reference: Paul Render
Dolomite
Formula: CaMg(CO3)2
Reference: Paul Render
Galena
Formula: PbS
Reference: Paul Render
Goethite
Formula: α-Fe3+O(OH)
Reference: Paul Render
Gypsum
Formula: CaSO4 · 2H2O
Reference: Paul Render
Hematite
Formula: Fe2O3
Reference: Paul Render
Lepidocrocite
Formula: γ-Fe3+O(OH)
Reference: Paul Render
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Paul Render
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Paul Render
Palygorskite
Formula: (Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Reference: Paul Render
Pyrolusite
Formula: Mn4+O2
Reference: Paul Render
Quartz
Formula: SiO2
Reference: Paul Render
Quartz var: Agate
Reference: Paul Render
Quartz var: Amethyst
Formula: SiO2
Reference: Paul Render
Quartz var: Chalcedony
Formula: SiO2
Reference: Paul Render
Quartz var: Citrine
Formula: SiO2
Reference: Paul Render
Quartz var: Prasiolite
Formula: SiO2
Reference: Paul Render
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Paul Render
Siderite
Formula: FeCO3
Reference: Paul Render
Sphalerite
Formula: ZnS
Reference: Paul Render
Strontianite
Formula: SrCO3
Reference: Paul Render

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Lepidocrocite4.FE.15γ-Fe3+O(OH)
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Citrine4.DA.05SiO2
var: Prasiolite4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Siderite5.AB.05FeCO3
Strontianite5.AB.15SrCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Celestine7.AD.35SrSO4
Gypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Palygorskite9.EE.20(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Unclassified Minerals, Rocks, etc.
Chlorite Group-
Limonite-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
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)
Lepidocrocite6.1.2.2γ-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Strontianite14.1.3.3SrCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Celestine28.3.1.2SrSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Palygorskite74.3.1a.1(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Agate
-SiO2
var: Amethyst-SiO2
var: Chalcedony-SiO2
var: Citrine-SiO2
var: Prasiolite-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H Lepidocrociteγ-Fe3+O(OH)
H Limonite(Fe,O,OH,H2O)
H MalachiteCu2(CO3)(OH)2
H Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
C StrontianiteSrCO3
OOxygen
O Quartz (var: Amethyst)SiO2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O BaryteBaSO4
O CalciteCaCO3
O CelestineSrSO4
O Quartz (var: Chalcedony)SiO2
O Quartz (var: Citrine)SiO2
O DolomiteCaMg(CO3)2
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O Lepidocrociteγ-Fe3+O(OH)
O Limonite(Fe,O,OH,H2O)
O MalachiteCu2(CO3)(OH)2
O Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
O Quartz (var: Prasiolite)SiO2
O PyrolusiteMn4+O2
O QuartzSiO2
O SideriteFeCO3
O Quartz (var: Smoky Quartz)SiO2
O StrontianiteSrCO3
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg DolomiteCaMg(CO3)2
Mg Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
AlAluminium
Al Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si Quartz (var: Chalcedony)SiO2
Si Quartz (var: Citrine)SiO2
Si Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Si Quartz (var: Prasiolite)SiO2
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
SSulfur
S BaryteBaSO4
S BorniteCu5FeS4
S CelestineSrSO4
S ChalcopyriteCuFeS2
S GalenaPbS
S GypsumCaSO4 · 2H2O
S SphaleriteZnS
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe Lepidocrociteγ-Fe3+O(OH)
Fe Limonite(Fe,O,OH,H2O)
Fe SideriteFeCO3
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr CelestineSrSO4
Sr StrontianiteSrCO3
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS

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

Late Cretaceous
66 - 100.5 Ma



ID: 3191056
Mesozoic sedimentary rocks

Age: Late Cretaceous (66 - 100.5 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]

Late Triassic - Middle Triassic
201.3 - 247.2 Ma



ID: 3152907
Middle Triassic claystone

Age: Triassic (201.3 - 247.2 Ma)

Lithology: Major:{claystone}, Minor{siltstone,sandstone,gypsum}

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]

Mississippian
323.2 - 358.9 Ma



ID: 2035458
Dinantian Rocks (Undifferentiated)

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Limestone with subordinate sandstone and argillaceous rocks

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

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


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