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Wheal Cunning, St Just, Cornwall, England, UKi
Regional Level Types
Wheal CunningMine
St JustCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 7' 33'' North , 5° 41' 28'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW362317
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
St Just1,957 (2017)0.8km
Madron626 (2017)9.0km
Penzance19,872 (2017)11.0km
Mousehole697 (2017)11.8km
Marazion1,294 (2017)15.4km


Ancient tin mine, worked from 1830 to 1876 with a recorded total output of 460 tons of tin ore. Located west of St Just.
Ref.: B. Atkinson: Mining Sites in Cornwall, Vol. 2, Dyllansow Truran (1994)

Regions containing this locality

Eurasian PlateTectonic Plate
British IslesGroup of Islands
Devon and Cornwall metalliferous mining district, England, UKMining District
St Just Mining Region, Cornwall, England, UKRegion
St Just Mining District, Cornwall, England, UKMining District

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


3 valid minerals.

Detailed Mineral List:

Cassiterite
Formula: SnO2
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
'Chlorite Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 104
'Feldspar Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Quartz
Formula: SiO2
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 104.
Quartz var: Smoky Quartz
Formula: SiO2
Description: Collected from the collapse in Kenidjack valley.
Reference: D Hudson (St Just), pers. commun.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 104

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 9 - Silicates
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Smoky Quartz
-SiO2

List of minerals for each chemical element

HHydrogen
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Limonite(Fe,O,OH,H2O)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O CassiteriteSnO2
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Limonite(Fe,O,OH,H2O)
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Limonite(Fe,O,OH,H2O)
SnTin
Sn CassiteriteSnO2

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

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

Permian
251.902 - 298.9 Ma



ID: 3191499
Paleozoic intrusive rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Intrusive igneous 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]

Permian - Carboniferous
251.902 - 358.9 Ma



ID: 2028219
Unnamed Igneous Intrusion, Carboniferous To Permian

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Felsic-rock

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

Ordovician
443.8 - 485.4 Ma



ID: 3130462
Ordovician granite

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Granite group

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]

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


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