Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Clicker Tor Quarry, Lower Clicker, Menheniot, Cornwall, England, UKi
Regional Level Types
Clicker Tor QuarryQuarry (Tourist Attraction)
Lower ClickerCensus-designated Place
MenheniotCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 25' 36'' North , 4° 24' 53'' West
Latitude & Longitude (decimal):
50.42677,-4.41482
GRN:
N34W03
UK National Grid Reference:
SX285614
Type:
Quarry (Tourist Attraction) - last checked 2025
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Menheniot782 (2017)1.5km
Liskeard9,237 (2017)4.7km
Dobwalls1,418 (2017)8.0km
Looe5,112 (2017)8.2km
Pensilva1,663 (2017)8.5km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
British Micromount Society, Devon and Cornwall Branch MeetingsLiskeard, Cornwall5km
Mindat Locality ID:
1073
Long-form identifier:
mindat:1:2:1073:6
GUID (UUID V4):
0


A disused and largely flooded quarry in an intrusion of ultrabasic rock. Now classified as a Site of Special Scientific Interest (SSSI).
Of such a scientific interest that it is now an attraction park!

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Datolite
Formula: CaB(SiO4)(OH)
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
ⓘ Wollastonite
Formula: Ca3(Si3O9)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘDatolite9.AJ.20CaB(SiO4)(OH)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
ⓘAnorthite9.FA.35Ca(Al2Si2O8)

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ DatoliteCaB(SiO4)(OH)
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
BBoron
Bⓘ DatoliteCaB(SiO4)(OH)
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ DatoliteCaB(SiO4)(OH)
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ WollastoniteCa3(Si3O9)
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ DatoliteCaB(SiO4)(OH)
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ WollastoniteCa3(Si3O9)
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ DatoliteCaB(SiO4)(OH)
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ WollastoniteCa3(Si3O9)
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

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
EuropeContinent
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

Boase, H.S. (1838): Contributions towards a knowledge of the geology of Cornwall. Transactions of the Royal Geological Society of Cornwall 4, 166-474.
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