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Pendennis Head, Falmouth, Cornwall, England, UKi
Regional Level Types
Pendennis HeadHeadland
FalmouthCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 8' 36'' North , 5° 2' 33'' West
Latitude & Longitude (decimal):
50.14361,-5.04250
GeoHash:
G#: gbumm225t
GRN:
N34W03
Type:
Headland
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Falmouth31,988 (2017)2.4km
Flushing722 (2017)3.1km
Penryn7,326 (2011)5.2km
Mylor Bridge1,443 (2017)5.3km
Gerrans535 (2017)5.8km
Mindat Locality ID:
917
Long-form identifier:
mindat:1:2:917:4
GUID (UUID V4):
9246ff9a-0d03-432c-9fd7-4f057e5807f1


A body of mica trap (specifically, a minette), about 6 feet wide on average, is exposed below high water mark at Pendennis Head. Where it skirts the coast, it has the appearance of a sill, but then bends northwards and cuts through the host strata as a dyke.

Age: probably late Carboniferous to early Permian

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


17 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Baryte
Formula: BaSO4
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Chromite
Formula: Fe2+Cr3+2O4
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ 'Feldspar Group'
β“˜ Hedenbergite
Formula: CaFe2+Si2O6
β“˜ Hematite
Formula: Fe2O3
β“˜ Ilmenite
Formula: Fe2+TiO3
β“˜ 'K Feldspar'
β“˜ Magnesio-arfvedsonite
Formula: {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
β“˜ Magnesite
Formula: MgCO3
β“˜ 'Mica Group'
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
β“˜ Potassic-magnesio-arfvedsonite
Formula: [K][Na2][Mg4Fe3+]Si8O22(OH)2
Description: In peralkaline minette dyke at Pendennis Point.
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ 'Rhombohedral Carbonate'
Formula: (Ca/Mg/Fe/Mn etc)CO3
β“˜ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
β“˜ Rutile
Formula: TiO2
β“˜ Sanidine
Formula: K(AlSi3O8)
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Chromite4.BB.05Fe2+Cr3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Ilmenite4.CB.05Fe2+TiO3
β“˜Quartz4.DA.05SiO2
β“˜Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
β“˜Magnesite5.AB.05MgCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Hedenbergite9.DA.15CaFe2+Si2O6
β“˜Magnesio-arfvedsonite9.DE.25{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
β“˜Riebeckite9.DE.25β—»[Na2][Fe2+3Fe3+2]Si8O22(OH)2
β“˜Potassic-magnesio-arfvedsonite9.DE.25[K][Na2][Mg4Fe3+]Si8O22(OH)2
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
β“˜Sanidine9.FA.30K(AlSi3O8)
Unclassified
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
β“˜'K Feldspar'-
β“˜'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜'Mica Group'-
β“˜'Feldspar Group'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Rhombohedral Carbonate'-(Ca/Mg/Fe/Mn etc)CO3

List of minerals for each chemical element

HHydrogen
Hβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Hβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Hβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
CCarbon
Cβ“˜ DolomiteCaMg(CO3)2
Cβ“˜ MagnesiteMgCO3
Cβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
OOxygen
Oβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oβ“˜ BaryteBaSO4
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ ChromiteFe2+Cr23+O4
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ HedenbergiteCaFe2+Si2O6
Oβ“˜ HematiteFe2O3
Oβ“˜ IlmeniteFe2+TiO3
Oβ“˜ MagnesiteMgCO3
Oβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Oβ“˜ RutileTiO2
Oβ“˜ SanidineK(AlSi3O8)
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
Oβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FFluorine
Fβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Naβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Naβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ MagnesiteMgCO3
Mgβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
Mgβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
AlAluminium
Alβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ SanidineK(AlSi3O8)
SiSilicon
Siβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ HedenbergiteCaFe2+Si2O6
Siβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Siβ“˜ SanidineK(AlSi3O8)
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sβ“˜ BaryteBaSO4
Sβ“˜ PyriteFeS2
ClChlorine
Clβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Kβ“˜ SanidineK(AlSi3O8)
Kβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
CaCalcium
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ HedenbergiteCaFe2+Si2O6
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Caβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
TiTitanium
Tiβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ IlmeniteFe2+TiO3
Tiβ“˜ RutileTiO2
Tiβ“˜ TitaniteCaTi(SiO4)O
CrChromium
Crβ“˜ ChromiteFe2+Cr23+O4
MnManganese
Mnβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FeIron
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ ChromiteFe2+Cr23+O4
Feβ“˜ HedenbergiteCaFe2+Si2O6
Feβ“˜ HematiteFe2O3
Feβ“˜ IlmeniteFe2+TiO3
Feβ“˜ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Feβ“˜ PyriteFeS2
Feβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Feβ“˜ Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
Feβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
BaBarium
Baβ“˜ BaryteBaSO4

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
β“˜ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
β“˜ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
β“˜ Greisenization (latest age)~280 MaCornwall, England, UK
β“˜ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
β“˜ Formation of metallized pegmatites~285 MaCornwall, England, UK
β“˜ Greisenization (earliest age)~285 MaCornwall, England, UK
β“˜ Emplacement of major plutons~295 MaCornwall, England, UK

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian 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.

References

Phillips, A.J. (1875): On the Rocks of the Mining Districts of Cornwall. Quarterly Journal of the Geological Society of London 31, 319-345.
Hill, J.B., MacAllister, D.A., and Flett, J.S. (1906): The Geology of Falmouth and Truro and of the Mining District of Camborne and Redruth. HMSO Publications (London), pp. 74-80.
Hall, A. (1982): The Pendennis Peralkaline Minette. Mineralogical Magazine 45, 257-266.
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