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Wheal Carne (Wheal Maitland; Wheal London), Geevor Mine, Pendeen, St Just, Cornwall, England, UKi
Regional Level Types
Wheal Carne (Wheal Maitland; Wheal London)Mine
Geevor MineMine (Inactive)
St JustCivil Parish
EnglandConstituent Country

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Latitude & Longitude (WGS84):
50° 8' 47'' North , 5° 39' 52'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
Locality type:
Köppen climate type:
Nearest Settlements:
St Just1,957 (2017)2.8km
Madron626 (2017)7.3km
Penzance19,872 (2017)9.6km
Mousehole697 (2017)11.4km
Marazion1,294 (2017)13.7km

Wheal Carne is a name relating to a section of what became Geevor mine.

Derived from an early small mine or tin bounds where the name has been incorporated into a later working.

The Wheal Carne workings are located on the south-eastern side of the B3306 road, lying to the east of Wethered's Shaft and to the south-west of Pendeen church. Ironically the name Wheal Carne is commemorated by a terrace of cottages called Wheal Carne Row, pretty much opposite the entrance of Geevor Mine.

Dines makes reference to it in the first paragraph of the entry on Geevor mine. Plate III A is a view across the collapsed collar of Wheal Carne Shaft.

Some early work at Geevor Mine was undertaken through Wheal Carne Shaft.

Carne (1822) reported a new mineral from this locality, which he named "isopyre". It later turned out to be impure opal.

Greg & Lettsom (1858) and Hall (1868) list several zeolites as occurring at Wheal Carne. As pointed out by Russell, this is most likely a confusion with Wheal Cock Carn, i.e. that part of the cliff between Crowns Rock and Wheal Cock Zawn below which a prehnite-bearing vein crops out.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

3 valid minerals.

Detailed Mineral List:

Formula: SnO2
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
Formula: SiO2 · nH2O
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Opal var: Fire Opal
Formula: SiO2 · nH2O
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
Opal var: Isopyre
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Formula: SiO2
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
Quartz var: Jasper
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Fire Opal4.DA.10SiO2 · nH2O
var: Isopyre4.DA.10SiO2 · nH2O
var: Jasper4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
var: Fire Opal-SiO2 · nH2O
var: Isopyre-SiO2 · nH2O
var: Jasper

List of minerals for each chemical element

H Opal (var: Fire Opal)SiO2 · nH2O
H OpalSiO2 · nH2O
O Opal (var: Fire Opal)SiO2 · nH2O
O CassiteriteSnO2
O QuartzSiO2
O OpalSiO2 · nH2O
Si Opal (var: Fire Opal)SiO2 · nH2O
Si QuartzSiO2
Si OpalSiO2 · nH2O
Sn CassiteriteSnO2


Geologic TimeRocks, Minerals and Events
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
ⓘ 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


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Carne, J. (1822): On the Mineral Productions and the Geology of the Parish of St. Just. Transactions of the Royal Geological Society of Cornwall 2, 290-358.
Greg, R.P., and Lettsom, W.G. (1858): Manual of the Mineralogy of Great Britain and Ireland. John van Voorst (London), 483 pp.
Hall, T.M. (1868): The Mineralogist's Directory or, A Guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford (London), 168 pp.
Russell, A. (1910): Notes on the Occurrence of Zeolites in Cornwall and Devon. Mineralogical Magazine 15, 377-384.

Other Regions, Features and Areas containing this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate

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