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Coverack Cove, Coverack, St Keverne, Cornwall, England, UKi
Regional Level Types
Coverack CoveCove
CoverackTown
St KeverneCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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PhotosMapsSearch
08488580017271997859424.jpg
Serpentinite

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
01073090017271997878983.jpg
Altered troctolite.

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
04027420017369059983515.jpg
Diallage, etc.

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
08488580017271997859424.jpg
Serpentinite

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
01073090017271997878983.jpg
Altered troctolite.

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
09413320017364547941969.jpg
Diallage, etc.

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
08488580017271997859424.jpg
Serpentinite

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
01073090017271997878983.jpg
Altered troctolite.

Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
Latitude & Longitude (WGS84):
50° 1' 28'' North , 5° 5' 49'' West
Latitude & Longitude (decimal):
50.02444,-5.09694
GeoHash:
G#: gbuks48t8
GRN:
N34W03
UK National Grid Reference:
SW782185
Type:
Cove
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Coverack255 (2017)0.1km
Ruan Minor558 (2017)7.0km
Lizard906 (2017)9.9km
Mullion1,955 (2017)10.4km
Gweek667 (2017)11.2km
Mindat Locality ID:
1345
Long-form identifier:
mindat:1:2:1345:4
GUID (UUID V4):
0


In this cove, a part of an old oceanic mantle (former peridotite, now serpentinite) and crust (coarse-grained gabbro with cleavages of "diallage" up to 30 cm) is visible. Between them a "fossil MOHO" (the transition between crust and mantle) can be seen, a small layer of rock that originally was troctolite (olivine grains in feldspar), but the olivine is now heavily altered.
This slab was placed there during the Hercynian orogenesis.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ 'Diallage'
Colour: Green
ⓘ Diopside
Formula: CaMgSi2O6
Colour: Green
ⓘ Enstatite
Formula: Mg2Si2O6
ⓘ Enstatite var. Bronzite
Formula: (Mg,Fe2+)2[SiO3]2
ⓘ 'Fayalite-Forsterite Series'
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ 'Hypersthene'
Formula: (Mg,Fe)SiO3
Description: Reported as "metalloid diallage".
ⓘ Native Copper
Formula: Cu
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
Description: The main product of rodingite alteration of gabbro boulders that occur on the beach at Coverack Cove.
ⓘ 'Saussurite'
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ 'Serpentine Subgroup var. Bastite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Talc var. Steatite
Formula: Mg3(Si4O10)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 9 - Silicates
ⓘEnstatite9.DA.05Mg2Si2O6
ⓘvar. Bronzite9.DA.05(Mg,Fe2+)2[SiO3]2
ⓘDiopside9.DA.15CaMgSi2O6
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘTalc
var. Steatite		9.EC.05Mg3(Si4O10)(OH)2
ⓘ9.EC.05Mg3Si4O10(OH)2
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Unclassified
ⓘ'Diallage'-
ⓘ'Hypersthene'-(Mg,Fe)SiO3
ⓘ'Serpentine Subgroup
var. Bastite'		-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Saussurite'-

List of minerals for each chemical element

HHydrogen
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Talc var. SteatiteMg3(Si4O10)(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
OOxygen
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ DiopsideCaMgSi2O6
Oⓘ EnstatiteMg2Si2O6
Oⓘ Hypersthene(Mg,Fe)SiO3
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ Talc var. SteatiteMg3(Si4O10)(OH)2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Oⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Oⓘ Fayalite-Forsterite Series
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ EnstatiteMg2Si2O6
Mgⓘ Hypersthene(Mg,Fe)SiO3
Mgⓘ Talc var. SteatiteMg3(Si4O10)(OH)2
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Mgⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ DiopsideCaMgSi2O6
Siⓘ EnstatiteMg2Si2O6
Siⓘ Hypersthene(Mg,Fe)SiO3
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Talc var. SteatiteMg3(Si4O10)(OH)2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Siⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Siⓘ Fayalite-Forsterite Series
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
ClChlorine
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ DiopsideCaMgSi2O6
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
MnManganese
Mnⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Feⓘ Hypersthene(Mg,Fe)SiO3
Feⓘ Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Feⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Feⓘ Fayalite-Forsterite Series
NiNickel
Niⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cuⓘ Native CopperCu
ZnZinc
Znⓘ Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

Geochronology

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

Hall, A. (1979) Rodingites in the Lizard complex. Proceedings of the Ussher Society, 4 (3). 269-273
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