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โ‡ฑ Lleyn Peninsula, Gwynedd, Wales, UK

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Lleyn Peninsula, Gwynedd, Wales, UKi
Regional Level Types
Lleyn PeninsulaPeninsula
GwyneddCounty
WalesCountry
UKCountry

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Age:
458 to 448 Ma
Geologic Time:
Largest Settlements:
PlacePopulation
Pwllheli4,076 (2017)
Criccieth1,753 (2017)
Nefyn1,373 (2017)
Morfa Nefyn857 (2017)
Abersoch783 (2017)
Chwilog640 (2017)
Mindat Locality ID:
19597
Long-form identifier:
mindat:1:2:19597:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Caernarvonshire


The Lleyn Peninsula, an undulating spur reaching out from the mountains of Snowdonia, is the most westerly point of Gwynedd. Twenty five miles long, it averages eight miles in width, and separates Caernarfon and Cardigan Bays. It is bordered to the east by the A487 Caernarfon-Porthmadog road.

At various times manganese, iron and lead-copper mines have operated on the Lleyn.

There are 16 granitic intrusions and contemporary intermediate to rhyolitic volcanic rocks, some of which are peralkaline (Croudace 1982; Leat & Thorpe 1986). All the rocks have undergone mild metamorphism.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

63 valid minerals. 4 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: 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

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

โ“˜ 'Alkali amphibole'
โœช Alleghanyite
Formula: Mn2+5(SiO4)2(OH)2
Habit: blade-like
Colour: clove-brown
Description: Alleghanyite was found as individual crystals or, more commonly, composite crystals with tephroite. The composite alleghanyite/tephroite crystals are up to 2 cm in length and vary in thickness from 2 mm to microscopic size. The alleghanyite contains up to 4.8 wt% Ti.
โ“˜ Analcime
Formula: Na(AlSi2O6) ยท H2O
โ“˜ Anatase
Formula: TiO2
โ“˜ Andradite
Formula: Ca3Fe3+2(SiO4)3
โ“˜ Anglesite
Formula: PbSO4
โ“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
โ“˜ 'Apophyllite Group'
Formula: AB4[Si8O22]X ยท 8H2O
โ“˜ Atacamite
Formula: Cu2(OH)3Cl
โ“˜ Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
โ“˜ Banalsite (TL)
Formula: Na2BaAl4Si4O16
Type Locality:
โ“˜ Bannisterite (TL)
Formula: (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Type Locality:
โ“˜ Baryte
Formula: BaSO4
โ“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
โ“˜ Birnessite
Formula: (Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
โ“˜ Bixbyite-(Mn)
Formula: Mn3+2O3
โ“˜ Bornite
Formula: Cu5FeS4
โ“˜ Botallackite
Formula: Cu2(OH)3Cl
โ“˜ Brookite
Formula: TiO2
โ“˜ Calcite
Formula: CaCO3
โ“˜ Caryopilite
Formula: Mn2+3Si2O5(OH)4
โ“˜ Celsian
Formula: Ba(Al2Si2O8)
โ“˜ Cerussite
Formula: PbCO3
โ“˜ Chalcopyrite
Formula: CuFeS2
โ“˜ 'Chlorite Group'
โ“˜ Cotunnite
Formula: PbCl2
โ“˜ Cumengeite
Formula: Pb21Cu20Cl42(OH)40 ยท 6H2O
โ“˜ Cymrite (TL)
Formula: BaAl2Si2(O,OH)8 ยท H2O
Type Locality:
Habit: masses to 2mm
โ“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
โ“˜ Epidote-(Sr)
Formula: (CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
Colour: Crimson
Description: Analyses show that crimson needles embedded in celsian are almost exclusively epidote-(Sr)
โ“˜ Feitknechtite
Formula: Mn3+O(OH)
โ“˜ Fluorapatite
Formula: Ca5(PO4)3F
โ“˜ Galena
Formula: PbS
โ“˜ Ganophyllite
Formula: (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
โ“˜ Harmotome
Formula: Ba2(Si12Al4)O32 ยท 12H2O
โ“˜ Hausmannite
Formula: Mn2+Mn3+2O4
โ“˜ Hematite
Formula: Fe2O3
โ“˜ 'Hornblende Root Name Group'
Formula: โ—ปCa2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
โ“˜ Jacobsite
Formula: Mn2+Fe3+2O4
โ“˜ 'Jacobsite-Q'
Formula: Mn2+(Fe3+,Mn3+)2O4
โ“˜ 'Limonite'
โ“˜ Magnetite
Formula: Fe2+Fe3+2O4
โ“˜ Manganite
Formula: Mn3+O(OH)
โ“˜ Manganosite
Formula: MnO
โ“˜ Microcline var. Hyalophane
Formula: (K,Ba)[Al(Si,Al)Si2O8]
โ“˜ Native Sulphur
Formula: S8
โ“˜ Natrolite
Formula: Na2Al2Si3O10 ยท 2H2O
โ“˜ Neotocite
Formula: (Mn,Fe)SiO3 ยท H2O (?)
Description: Massive, dark brown to black, breaking into dark olive-green to brown translucent fragments.
โ“˜ Paracelsian
Formula: Ba(Al2Si2O8)
โ“˜ Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
โ“˜ Pectolite
Formula: NaCa2Si3O8(OH)
โ“˜ Pennantite (TL)
Formula: Mn2+5Al(AlSi3O10)(OH)8
Type Locality:
References:
โ“˜ Phosgenite
Formula: Pb2CO3Cl2
โ“˜ Piemontite
Formula: (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
References:
โ“˜ Piemontite-(Sr)
Formula: (CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
โ“˜ Powellite
Formula: Ca(MoO4)
Description: creamy-white microcrystals
โ“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
โ“˜ Pyrite
Formula: FeS2
โ“˜ Pyrochroite
Formula: Mn(OH)2
โ“˜ Pyrolusite
Formula: Mn4+O2
โ“˜ Pyromorphite
Formula: Pb5(PO4)3Cl
โ“˜ Pyrophanite
Formula: Mn2+TiO3
โ“˜ Pyroxmangite
Formula: Mn2+SiO3
โ“˜ Quartz
Formula: SiO2
Localities: Reported from at least 7 localities in this region.
โ“˜ Quartz var. Chalcedony
Formula: SiO2
โ“˜ Rhodochrosite
Formula: MnCO3
โ“˜ Rhodonite
Formula: CaMn3Mn[Si5O15]
โ“˜ Riebeckite
Formula: โ—ป[Na2][Fe2+3Fe3+2]Si8O22(OH)2
โ“˜ Romanรจchite
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
โ“˜ Sphalerite
Formula: ZnS
โ“˜ Stevensite
Formula: (Ca,Na)xMg3-x(Si4O10)(OH)2
โ“˜ Strontianite
Formula: SrCO3
โ“˜ Tephroite
Formula: Mn2+2SiO4

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
โ“˜Native Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
โ“˜Bornite2.BA.15Cu5FeS4
โ“˜Sphalerite2.CB.05aZnS
โ“˜Chalcopyrite2.CB.10aCuFeS2
โ“˜Galena2.CD.10PbS
โ“˜Pyrite2.EB.05aFeS2
Group 3 - Halides
โ“˜Cotunnite3.AB.85PbCl2
โ“˜Atacamite3.DA.10aCu2(OH)3Cl
โ“˜Botallackite3.DA.10bCu2(OH)3Cl
โ“˜Cumengeite3.DB.20Pb21Cu20Cl42(OH)40 ยท 6H2O
Group 4 - Oxides and Hydroxides
โ“˜Manganosite4.AB.25MnO
โ“˜Jacobsite4.BB.05Mn2+Fe3+2O4
โ“˜Magnetite4.BB.05Fe2+Fe3+2O4
โ“˜Hausmannite4.BB.10Mn2+Mn3+2O4
โ“˜Hematite4.CB.05Fe2O3
โ“˜Pyrophanite4.CB.05Mn2+TiO3
โ“˜Bixbyite-(Mn)4.CB.10Mn3+2O3
โ“˜Quartz
var. Chalcedony		4.DA.05SiO2
โ“˜4.DA.05SiO2
โ“˜Pyrolusite4.DB.05Mn4+O2
โ“˜Anatase4.DD.05TiO2
โ“˜Brookite4.DD.10TiO2
โ“˜Romanรจchite4.DK.10(Ba,H2O)2(Mn4+,Mn3+)5O10
โ“˜Manganite4.FD.15Mn3+O(OH)
โ“˜Pyrochroite4.FE.05Mn(OH)2
โ“˜Feitknechtite4.FE.25Mn3+O(OH)
โ“˜Birnessite4.FL.45(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Group 5 - Nitrates and Carbonates
โ“˜Calcite5.AB.05CaCO3
โ“˜Rhodochrosite5.AB.05MnCO3
โ“˜Cerussite5.AB.15PbCO3
โ“˜Strontianite5.AB.15SrCO3
โ“˜Phosgenite5.BE.20Pb2CO3Cl2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
โ“˜Anglesite7.AD.35PbSO4
โ“˜Baryte7.AD.35BaSO4
โ“˜Powellite7.GA.05Ca(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
โ“˜Fluorapatite8.BN.05Ca5(PO4)3F
โ“˜Pyromorphite8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
โ“˜Tephroite9.AC.05Mn2+2SiO4
โ“˜Andradite9.AD.25Ca3Fe3+2(SiO4)3
โ“˜Alleghanyite9.AF.45Mn2+5(SiO4)2(OH)2
โ“˜Axinite-(Fe)9.BD.20Ca2Fe2+Al2BSi4O15OH
โ“˜Piemontite-(Sr)9.BG.05(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
โ“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
โ“˜Piemontite9.BG.05a(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
โ“˜Epidote-(Sr)9.BG.05a(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
โ“˜Riebeckite9.DE.25โ—ป[Na2][Fe2+3Fe3+2]Si8O22(OH)2
โ“˜Pectolite9.DG.05NaCa2Si3O8(OH)
โ“˜Rhodonite9.DK.05CaMn3Mn[Si5O15]
โ“˜Pyroxmangite9.DO.05Mn2+SiO3
โ“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
โ“˜Paragonite9.EC.15NaAl2(AlSi3O10)(OH)2
โ“˜Stevensite9.EC.45(Ca,Na)xMg3-x(Si4O10)(OH)2
โ“˜Pennantite (TL)9.EC.55Mn2+5Al(AlSi3O10)(OH)8
โ“˜Caryopilite9.ED.15Mn2+3Si2O5(OH)4
โ“˜Neotocite9.ED.20(Mn,Fe)SiO3 ยท H2O (?)
โ“˜Cymrite (TL)9.EG.05BaAl2Si2(O,OH)8 ยท H2O
โ“˜Ganophyllite9.EG.30(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
โ“˜Bannisterite (TL)9.EG.75(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
โ“˜Celsian9.FA.30Ba(Al2Si2O8)
โ“˜Microcline
var. Hyalophane		9.FA.30(K,Ba)[Al(Si,Al)Si2O8]
โ“˜Paracelsian9.FA.40Ba(Al2Si2O8)
โ“˜Banalsite (TL)9.FA.60Na2BaAl4Si4O16
โ“˜Natrolite9.GA.05Na2Al2Si3O10 ยท 2H2O
โ“˜Analcime9.GB.05Na(AlSi2O6) ยท H2O
โ“˜Harmotome9.GC.10Ba2(Si12Al4)O32 ยท 12H2O
Unclassified
โ“˜'Apophyllite Group'-AB4[Si8O22]X ยท 8H2O
โ“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
โ“˜'Chlorite Group'-
โ“˜'Jacobsite-Q'-Mn2+(Fe3+,Mn3+)2O4
โ“˜'Limonite'-
โ“˜'Hornblende Root Name Group'-โ—ปCa2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
โ“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
โ“˜'Alkali amphibole'-

List of minerals for each chemical element

HHydrogen
Hโ“˜ AlleghanyiteMn52+(SiO4)2(OH)2
Hโ“˜ AnalcimeNa(AlSi2O6) ยท H2O
Hโ“˜ Apophyllite GroupAB4[Si8O22]X ยท 8H2O
Hโ“˜ AtacamiteCu2(OH)3Cl
Hโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Hโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hโ“˜ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Hโ“˜ BotallackiteCu2(OH)3Cl
Hโ“˜ CaryopiliteMn32+Si2O5(OH)4
Hโ“˜ CymriteBaAl2Si2(O,OH)8 ยท H2O
Hโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Hโ“˜ FeitknechtiteMn3+O(OH)
Hโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Hโ“˜ HarmotomeBa2(Si12Al4)O32 ยท 12H2O
Hโ“˜ ManganiteMn3+O(OH)
Hโ“˜ Neotocite(Mn,Fe)SiO3 ยท H2O (?)
Hโ“˜ NatroliteNa2Al2Si3O10 ยท 2H2O
Hโ“˜ ParagoniteNaAl2(AlSi3O10)(OH)2
Hโ“˜ PectoliteNaCa2Si3O8(OH)
Hโ“˜ PennantiteMn52+Al(AlSi3O10)(OH)8
Hโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Hโ“˜ PrehniteCa2Al2Si3O10(OH)2
Hโ“˜ PyrochroiteMn(OH)2
Hโ“˜ Riebeckiteโ—ป[Na2][Fe32+Fe23+]Si8O22(OH)2
Hโ“˜ Romanรจchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Hโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Hโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Hโ“˜ CumengeitePb21Cu20Cl42(OH)40 ยท 6H2O
Hโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Hโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
BBoron
Bโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
CCarbon
Cโ“˜ CalciteCaCO3
Cโ“˜ CerussitePbCO3
Cโ“˜ PhosgenitePb2CO3Cl2
Cโ“˜ RhodochrositeMnCO3
Cโ“˜ StrontianiteSrCO3
OOxygen
Oโ“˜ AlleghanyiteMn52+(SiO4)2(OH)2
Oโ“˜ AnalcimeNa(AlSi2O6) ยท H2O
Oโ“˜ AnataseTiO2
Oโ“˜ AndraditeCa3Fe23+(SiO4)3
Oโ“˜ AnglesitePbSO4
Oโ“˜ Apophyllite GroupAB4[Si8O22]X ยท 8H2O
Oโ“˜ AtacamiteCu2(OH)3Cl
Oโ“˜ BanalsiteNa2BaAl4Si4O16
Oโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Oโ“˜ BaryteBaSO4
Oโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oโ“˜ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Oโ“˜ Bixbyite-(Mn)Mn23+O3
Oโ“˜ BotallackiteCu2(OH)3Cl
Oโ“˜ BrookiteTiO2
Oโ“˜ CalciteCaCO3
Oโ“˜ CaryopiliteMn32+Si2O5(OH)4
Oโ“˜ CelsianBa(Al2Si2O8)
Oโ“˜ CerussitePbCO3
Oโ“˜ Quartz var. ChalcedonySiO2
Oโ“˜ CymriteBaAl2Si2(O,OH)8 ยท H2O
Oโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Oโ“˜ FeitknechtiteMn3+O(OH)
Oโ“˜ FluorapatiteCa5(PO4)3F
Oโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Oโ“˜ HarmotomeBa2(Si12Al4)O32 ยท 12H2O
Oโ“˜ HausmanniteMn2+Mn23+O4
Oโ“˜ HematiteFe2O3
Oโ“˜ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Oโ“˜ Jacobsite-QMn2+(Fe3+,Mn3+)2O4
Oโ“˜ JacobsiteMn2+Fe23+O4
Oโ“˜ ManganositeMnO
Oโ“˜ ManganiteMn3+O(OH)
Oโ“˜ MagnetiteFe2+Fe23+O4
Oโ“˜ Neotocite(Mn,Fe)SiO3 ยท H2O (?)
Oโ“˜ NatroliteNa2Al2Si3O10 ยท 2H2O
Oโ“˜ ParacelsianBa(Al2Si2O8)
Oโ“˜ ParagoniteNaAl2(AlSi3O10)(OH)2
Oโ“˜ PectoliteNaCa2Si3O8(OH)
Oโ“˜ PennantiteMn52+Al(AlSi3O10)(OH)8
Oโ“˜ PhosgenitePb2CO3Cl2
Oโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Oโ“˜ PowelliteCa(MoO4)
Oโ“˜ PrehniteCa2Al2Si3O10(OH)2
Oโ“˜ PyrochroiteMn(OH)2
Oโ“˜ PyrolusiteMn4+O2
Oโ“˜ PyromorphitePb5(PO4)3Cl
Oโ“˜ PyrophaniteMn2+TiO3
Oโ“˜ PyroxmangiteMn2+SiO3
Oโ“˜ QuartzSiO2
Oโ“˜ RhodochrositeMnCO3
Oโ“˜ RhodoniteCaMn3Mn[Si5O15]
Oโ“˜ Riebeckiteโ—ป[Na2][Fe32+Fe23+]Si8O22(OH)2
Oโ“˜ Romanรจchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Oโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Oโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Oโ“˜ StrontianiteSrCO3
Oโ“˜ TephroiteMn22+SiO4
Oโ“˜ CumengeitePb21Cu20Cl42(OH)40 ยท 6H2O
Oโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
FFluorine
Fโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fโ“˜ FluorapatiteCa5(PO4)3F
Fโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Fโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naโ“˜ AnalcimeNa(AlSi2O6) ยท H2O
Naโ“˜ BanalsiteNa2BaAl4Si4O16
Naโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Naโ“˜ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Naโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Naโ“˜ NatroliteNa2Al2Si3O10 ยท 2H2O
Naโ“˜ ParagoniteNaAl2(AlSi3O10)(OH)2
Naโ“˜ PectoliteNaCa2Si3O8(OH)
Naโ“˜ Riebeckiteโ—ป[Na2][Fe32+Fe23+]Si8O22(OH)2
Naโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
MgMagnesium
Mgโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
AlAluminium
Alโ“˜ AnalcimeNa(AlSi2O6) ยท H2O
Alโ“˜ BanalsiteNa2BaAl4Si4O16
Alโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Alโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alโ“˜ CelsianBa(Al2Si2O8)
Alโ“˜ CymriteBaAl2Si2(O,OH)8 ยท H2O
Alโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Alโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Alโ“˜ HarmotomeBa2(Si12Al4)O32 ยท 12H2O
Alโ“˜ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Alโ“˜ NatroliteNa2Al2Si3O10 ยท 2H2O
Alโ“˜ ParacelsianBa(Al2Si2O8)
Alโ“˜ ParagoniteNaAl2(AlSi3O10)(OH)2
Alโ“˜ PennantiteMn52+Al(AlSi3O10)(OH)8
Alโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Alโ“˜ PrehniteCa2Al2Si3O10(OH)2
Alโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Alโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Alโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Siโ“˜ AlleghanyiteMn52+(SiO4)2(OH)2
Siโ“˜ AnalcimeNa(AlSi2O6) ยท H2O
Siโ“˜ AndraditeCa3Fe23+(SiO4)3
Siโ“˜ Apophyllite GroupAB4[Si8O22]X ยท 8H2O
Siโ“˜ BanalsiteNa2BaAl4Si4O16
Siโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Siโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siโ“˜ CaryopiliteMn32+Si2O5(OH)4
Siโ“˜ CelsianBa(Al2Si2O8)
Siโ“˜ Quartz var. ChalcedonySiO2
Siโ“˜ CymriteBaAl2Si2(O,OH)8 ยท H2O
Siโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Siโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Siโ“˜ HarmotomeBa2(Si12Al4)O32 ยท 12H2O
Siโ“˜ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Siโ“˜ Neotocite(Mn,Fe)SiO3 ยท H2O (?)
Siโ“˜ NatroliteNa2Al2Si3O10 ยท 2H2O
Siโ“˜ ParacelsianBa(Al2Si2O8)
Siโ“˜ ParagoniteNaAl2(AlSi3O10)(OH)2
Siโ“˜ PectoliteNaCa2Si3O8(OH)
Siโ“˜ PennantiteMn52+Al(AlSi3O10)(OH)8
Siโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Siโ“˜ PrehniteCa2Al2Si3O10(OH)2
Siโ“˜ PyroxmangiteMn2+SiO3
Siโ“˜ QuartzSiO2
Siโ“˜ RhodoniteCaMn3Mn[Si5O15]
Siโ“˜ Riebeckiteโ—ป[Na2][Fe32+Fe23+]Si8O22(OH)2
Siโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Siโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Siโ“˜ TephroiteMn22+SiO4
Siโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
PPhosphorus
Pโ“˜ FluorapatiteCa5(PO4)3F
Pโ“˜ PyromorphitePb5(PO4)3Cl
Pโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sโ“˜ AnglesitePbSO4
Sโ“˜ BaryteBaSO4
Sโ“˜ BorniteCu5FeS4
Sโ“˜ ChalcopyriteCuFeS2
Sโ“˜ GalenaPbS
Sโ“˜ PyriteFeS2
Sโ“˜ SphaleriteZnS
Sโ“˜ Native SulphurS8
ClChlorine
Clโ“˜ AtacamiteCu2(OH)3Cl
Clโ“˜ BotallackiteCu2(OH)3Cl
Clโ“˜ CotunnitePbCl2
Clโ“˜ PhosgenitePb2CO3Cl2
Clโ“˜ PyromorphitePb5(PO4)3Cl
Clโ“˜ CumengeitePb21Cu20Cl42(OH)40 ยท 6H2O
Clโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Clโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Kโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Kโ“˜ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
CaCalcium
Caโ“˜ AndraditeCa3Fe23+(SiO4)3
Caโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Caโ“˜ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Caโ“˜ CalciteCaCO3
Caโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Caโ“˜ FluorapatiteCa5(PO4)3F
Caโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Caโ“˜ PectoliteNaCa2Si3O8(OH)
Caโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Caโ“˜ PowelliteCa(MoO4)
Caโ“˜ PrehniteCa2Al2Si3O10(OH)2
Caโ“˜ RhodoniteCaMn3Mn[Si5O15]
Caโ“˜ Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Caโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Caโ“˜ Hornblende Root Name Groupโ—ปCa2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caโ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Caโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
TiTitanium
Tiโ“˜ AnataseTiO2
Tiโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiโ“˜ BrookiteTiO2
Tiโ“˜ PyrophaniteMn2+TiO3
MnManganese
Mnโ“˜ AlleghanyiteMn52+(SiO4)2(OH)2
Mnโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Mnโ“˜ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O
Mnโ“˜ Bixbyite-(Mn)Mn23+O3
Mnโ“˜ CaryopiliteMn32+Si2O5(OH)4
Mnโ“˜ FeitknechtiteMn3+O(OH)
Mnโ“˜ Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 ยท 8H2O
Mnโ“˜ HausmanniteMn2+Mn23+O4
Mnโ“˜ Jacobsite-QMn2+(Fe3+,Mn3+)2O4
Mnโ“˜ JacobsiteMn2+Fe23+O4
Mnโ“˜ ManganositeMnO
Mnโ“˜ ManganiteMn3+O(OH)
Mnโ“˜ Neotocite(Mn,Fe)SiO3 ยท H2O (?)
Mnโ“˜ PennantiteMn52+Al(AlSi3O10)(OH)8
Mnโ“˜ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Mnโ“˜ PyrochroiteMn(OH)2
Mnโ“˜ PyrolusiteMn4+O2
Mnโ“˜ PyrophaniteMn2+TiO3
Mnโ“˜ PyroxmangiteMn2+SiO3
Mnโ“˜ RhodochrositeMnCO3
Mnโ“˜ RhodoniteCaMn3Mn[Si5O15]
Mnโ“˜ Romanรจchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Mnโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Mnโ“˜ TephroiteMn22+SiO4
FeIron
Feโ“˜ AndraditeCa3Fe23+(SiO4)3
Feโ“˜ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 ยท nH2O
Feโ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feโ“˜ BorniteCu5FeS4
Feโ“˜ ChalcopyriteCuFeS2
Feโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feโ“˜ Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Feโ“˜ HematiteFe2O3
Feโ“˜ Jacobsite-QMn2+(Fe3+,Mn3+)2O4
Feโ“˜ JacobsiteMn2+Fe23+O4
Feโ“˜ MagnetiteFe2+Fe23+O4
Feโ“˜ Neotocite(Mn,Fe)SiO3 ยท H2O (?)
Feโ“˜ PyriteFeS2
Feโ“˜ Riebeckiteโ—ป[Na2][Fe32+Fe23+]Si8O22(OH)2
Feโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
CuCopper
Cuโ“˜ AtacamiteCu2(OH)3Cl
Cuโ“˜ BorniteCu5FeS4
Cuโ“˜ BotallackiteCu2(OH)3Cl
Cuโ“˜ ChalcopyriteCuFeS2
Cuโ“˜ CumengeitePb21Cu20Cl42(OH)40 ยท 6H2O
ZnZinc
Znโ“˜ SphaleriteZnS
SrStrontium
Srโ“˜ Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)
Srโ“˜ StrontianiteSrCO3
Srโ“˜ Epidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)
MoMolybdenum
Moโ“˜ PowelliteCa(MoO4)
BaBarium
Baโ“˜ BanalsiteNa2BaAl4Si4O16
Baโ“˜ BaryteBaSO4
Baโ“˜ CelsianBa(Al2Si2O8)
Baโ“˜ CymriteBaAl2Si2(O,OH)8 ยท H2O
Baโ“˜ HarmotomeBa2(Si12Al4)O32 ยท 12H2O
Baโ“˜ Microcline var. Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Baโ“˜ ParacelsianBa(Al2Si2O8)
Baโ“˜ Romanรจchite(Ba,H2O)2(Mn4+,Mn3+)5O10
PbLead
Pbโ“˜ AnglesitePbSO4
Pbโ“˜ CerussitePbCO3
Pbโ“˜ CotunnitePbCl2
Pbโ“˜ GalenaPbS
Pbโ“˜ PhosgenitePb2CO3Cl2
Pbโ“˜ PyromorphitePb5(PO4)3Cl
Pbโ“˜ CumengeitePb21Cu20Cl42(OH)40 ยท 6H2O

Fossils

There are 4 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences76
Youngest Fossil Listed419 Ma (Early/Lower Devonian)
Oldest Fossil Listed520 Ma (Cambrian)
Stratigraphic UnitsClick here to view 7 stratigraphic units.
Stratigraphic Units
UnitNo. OccurrencesAge
Downton Castle Sandstone - Ludlow Bone Bed5423 - 419.2 Ma (Paleozoic)
Upper Whitcliffe10423 - 419.2 Ma (Paleozoic)
Whitcliffe26425.6 - 423 Ma (Silurian)
Upper Llangibby Beds4427.4 - 423 Ma (Silurian)
Dwyfor Mudstone1455.8 - 445.6 Ma (Late/Upper Ordovician)
Dwyfach18457.5 - 452 Ma (Late/Upper Ordovician)
Hells Mouth Grits12520 - 516 Ma (Cambrian)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
๐Ÿ‘ Image
Porifera
phylum		Animalia : Porifera520 - 516 Ma
Cambrian
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Hexactinellida
class		Animalia : Porifera : Hexactinellida520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Trilobita
class		Animalia : Arthropoda : Trilobita520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Leptochilodiscus
genus		Animalia : Arthropoda : Trilobita : Agnostida : Weymouthiidae : Leptochilodiscus520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Serrodiscus
genus		Animalia : Arthropoda : Trilobita : Agnostida : Weymouthiidae : Serrodiscus520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Illaenus
genus		Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Illaenus457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Stenopareia
genus		Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Stenopareia457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Conolichas
genus		Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Conolichas457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Primaspis
genus		Animalia : Arthropoda : Trilobita : Lichida : Odontopleuridae : Primaspis457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Remopleurides
genus		Animalia : Arthropoda : Trilobita : Asaphida : Remopleurididae : Remopleurides457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Hamatolenus
genus		Animalia : Arthropoda : Trilobita : Ptychopariida : Ellipsocephalidae : Hamatolenus520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Decoroproetus
genus		Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Decoroproetus457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Harpidella
genus		Animalia : Arthropoda : Trilobita : Proetida : Aulacopleuridae : Harpidella457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Scopelochasmops
genus		Animalia : Arthropoda : Trilobita : Phacopida : Pterygometopidae : Scopelochasmops457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Lingulella
genus		Animalia : Brachiopoda : Lingulata : Lingulida : Obolidae : Lingulella520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Dalmanella
genus		Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Dalmanella457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Howellites
genus		Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Howellites457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Kjaerina
genus		Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Kjaerina457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Sowerbyella
genus		Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : Sowerbyella457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Oulodus
genus		Animalia : Chordata : Hibbardellidae : Oulodus425.6 - 423 Ma
Silurian
๐Ÿ‘ Image
Thelodus
genus		Animalia : Chordata : Loganelliidae : Thelodus425.6 - 423 Ma
Silurian
Planolites
genus		Animalia : Planolites520 - 516 Ma
Cambrian
๐Ÿ‘ Image
Thelodus parvidens
species		Animalia : Chordata : Loganelliidae : Thelodus : Thelodus parvidens427.4 - 419.2 Ma
Paleozoic
๐Ÿ‘ Image
Wurmiella excavata
species		Animalia : Chordata : Conodonta : Ozarkodinida : Spathognathodontodae : Wurmiella : Wurmiella excavata425.6 - 423 Ma
Silurian
๐Ÿ‘ Image
Ozarkodina confluens
species		Animalia : Chordata : Conodonta : Ozarkodinida : Ozarkodina : Ozarkodina confluens427.4 - 419.2 Ma
Paleozoic
๐Ÿ‘ Image
Paraproetus brevifrons
species		Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Paraproetus : Paraproetus brevifrons455.8 - 445.6 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Nicollidina remscheidensis
species		Animalia : Chordata : Conodonta : Ozarkodinida : Nicollidina : Nicollidina remscheidensis425.6 - 423 Ma
Silurian
๐Ÿ‘ Image
Paralogania ludlowiensis
species		Animalia : Chordata : Agnatha : Loganelliformes : Loganelliidae : Paralogania : Paralogania ludlowiensis425.6 - 419.2 Ma
Paleozoic
๐Ÿ‘ Image
Nethertonodus prodigialis
species		Animalia : Chordata : Shieliiformes : Shieliidae : Nethertonodus : Nethertonodus prodigialis427.4 - 423 Ma
Silurian
๐Ÿ‘ Image
Thelodus trilobatus
species		Animalia : Chordata : Loganelliidae : Thelodus : Thelodus trilobatus425.6 - 419.2 Ma
Paleozoic
๐Ÿ‘ Image
Ozarkodina snajdri
species		Animalia : Chordata : Conodonta : Ozarkodinida : Ozarkodina : Ozarkodina snajdri425.6 - 423 Ma
Silurian
๐Ÿ‘ Image
Coryssognathus dubius
species		Animalia : Chordata : Conodonta : Conodontophorida : Coryssognathus : Coryssognathus dubius427.4 - 419.2 Ma
Paleozoic
๐Ÿ‘ Image
Kloucekia apiculata
species		Animalia : Arthropoda : Trilobita : Phacopida : Acastidae : Kloucekia : Kloucekia apiculata457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Allolichas nodulosus
species		Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Allolichas : Allolichas nodulosus457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Deacybele pauca
species		Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Deacybele : Deacybele pauca457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Flexicalymene planimarginata
species		Animalia : Arthropoda : Trilobita : Phacopida : Calymenidae : Flexicalymene : Flexicalymene planimarginata457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Brongniartella minor
species		Animalia : Arthropoda : Trilobita : Phacopida : Homalonotidae : Brongniartella : Brongniartella minor457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Broeggerolithus nicholsoni
species		Animalia : Arthropoda : Trilobita : Asaphida : Trinucleidae : Broeggerolithus : Broeggerolithus nicholsoni457.5 - 452 Ma
Late/Upper Ordovician
๐Ÿ‘ Image
Runcinodiscus index
species		Animalia : Arthropoda : Trilobita : Agnostida : Weymouthiidae : Runcinodiscus : Runcinodiscus index520 - 516 Ma
Cambrian
Fossil LocalitiesClick to show 4 fossil localities

Localities in this Region

Other Regions, Features and Areas that Intersect

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
UK

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.

References

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