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Wheal Exmouth, Christow, Teignbridge, Devon, England, UKi
Regional Level Types
Wheal ExmouthMine
ChristowCivil Parish
TeignbridgeDistrict
DevonCounty
EnglandConstituent Country
UKCountry

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Key
Latitude & Longitude (WGS84):
50° 38' 4'' North , 3° 38' 30'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX839830
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Christow820 (2018)2.1km
Chudleigh4,011 (2018)4.4km
Bovey Tracey4,729 (2018)5.2km
Chudleigh Knighton1,125 (2018)5.5km
Lustleigh285 (2018)5.7km


Ancient lead mine.
Ref.: PG Embrey, RF Symes: "Minerals of Cornwall and Devon", BMNH publications (1987)
The works of this mine sit along a north-south lode like those at Frankmills nearby.
The tips in the present day run from the engine house, which has now been restored as a house with the unusual octagonal chimney and a second with an ornate corbel, down a shallow valley and across the main road to the river bank (300 to 400m in total length). These tips are composed of crushed local slate in places stained with iron or yellow lead oxide. A public footpath (public swamp may be a better description) runs from top to bottom of the works.
The tip between the road and the river yields galena and barite in reasonable quantity and small soft samples of pyromorphite. There is also a very localised pocket of linarite in which it is very abundant but the area is amybe only 2m x 3m in a small gulley. The rest of the tips are almost barren except the big tip at the top end of the works which contains galena, arsenopyrite and sphalerite.
A study on arsenic accumulation in wood mice was carried out at this site and found that the mice had 3 times the normal level of arsenic in their systems, in direct proportion to the elevated levels in the tips. However, in comparison to some other sites in Devon and Cornwall the occurance of arsenopyrite at Wh Exmouth is a rarity. Feb 2008.
The engine was the largest on the mines in the Teign Valley but the mine was worked out by 1875. It produced both lead (and silver) but also 1560 tones of zinc ore. In 1977 a proposal to rework the tips for metals was rejected.
Stafford Clark - Mining & Quarrying in the Teign Valley, Orchard Publications, Chudleigh 1995.
The mine expoited 2 lodes 15 fathoms apart but closer at depth. A section of the mine from 1872 shows 'Barytes Lode' below 42 fathoms. The tips include cherty quartz with galena, sphalerite and copper sulphides.
Dines H.G. 1956

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Reference: Steve Rust Collrction.
Arsenopyrite
Formula: FeAsS
Reference: Observed Feb, 2008
Baryte
Formula: BaSO4
Habit: Tabular
Colour: Creamy white, pinky
Reference: Observed Jan 2008
'Bindheimite'
Formula: Pb2Sb2O6O
Description: Forms resinous to powdery pale yellow replacements of Tetrahedrite.
Reference: Steve Rust Collection
Calcite
Formula: CaCO3
Reference: Steve Rust Collection
Cerussite
Formula: PbCO3
Reference: Observed, Jan 2008
Chalcopyrite
Formula: CuFeS2
Reference: Steve Rust Collrction.
Galena
Formula: PbS
Habit: Cubic
Description: Associated with baryte, quartz and country rock. Rare at the site but when found it may be in up to fist size pieces.
Reference: P Haas collection
Galena var: Argentiferous Galena
Formula: PbS
Reference: various added photos
Goethite
Formula: α-Fe3+O(OH)
Reference: Steve Rust Collrction.
Leadhillite ?
Formula: Pb4(CO3)2(SO4)(OH)2
Description: Forms tiny colourless to white micro-crystals <0.2mm associated with Anglesite and Cerussite in corroded Galena and Quartz. The crystals have not been analysed so could be Susannite.
Reference: Steve Rust Collection
Linarite
Formula: PbCu(SO4)(OH)2
Habit: tabular sprays and uncrystaline coatings
Colour: Blue
Description: Only found in one very restricted area (1m x 5m gulley), but there it is extremely common.
Reference: P Haas collection
'Manganese Oxides'
Reference: Observed, Jan 2008
Mimetite
Formula: Pb5(AsO4)3Cl
Reference: Observed, Jan 2008
Pyrite
Formula: FeS2
Habit: poor
Description: Small rough grains associated with rock forming minerals in the lead bearing lode stuff.
Reference: Observed Jan 2008
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: Observed, Jan 2008
Quartz
Formula: SiO2
Habit: Typical 6 sided and rock crystal
Colour: Glassy clear
Reference: Observed Jan 2008
Schulenbergite ?
Formula: (Cu,Zn)7(SO4)2(OH)10 · 3H2O
Description: Minutely crystalline light blue crusts on corroded Sphalerite, covering ares to a few mm.
Reference: Steve Rust Collection
Siderite
Formula: FeCO3
Reference: Steve Rust Collection
Sphalerite
Formula: ZnS
Reference: Dines H.G., 1956
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S13
Description: Rare as grey metallic masses to a few cms in quartz
Reference: Steve Rust Collection

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
var: Argentiferous Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S13
Group 4 - Oxides and Hydroxides
'Bindheimite'4.DH.20Pb2Sb2O6O
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Leadhillite ?5.BF.40Pb4(CO3)2(SO4)(OH)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Baryte7.AD.35BaSO4
Linarite7.BC.65PbCu(SO4)(OH)2
Schulenbergite ?7.DD.80(Cu,Zn)7(SO4)2(OH)10 · 3H2O
Group 8 - Phosphates, Arsenates and Vanadates
Mimetite8.BN.05Pb5(AsO4)3Cl
Pyromorphite8.BN.05Pb5(PO4)3Cl
Unclassified Minerals, Rocks, etc.
'Manganese Oxides'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S13
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Siderite14.1.1.3FeCO3
Group 17 - COMPOUND CARBONATES
Miscellaneous
Leadhillite ?17.1.2.1Pb4(CO3)2(SO4)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Linarite30.2.3.1PbCu(SO4)(OH)2
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq·xH2O, where m:p > 6:1
Schulenbergite ?31.1.6.1(Cu,Zn)7(SO4)2(OH)10 · 3H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Mimetite41.8.4.2Pb5(AsO4)3Cl
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Group 44 - ANTIMONATES
A2X2O6(O,OH,F)
'Bindheimite'44.1.1.2Pb2Sb2O6O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Galena
var: Argentiferous Galena
-PbS
'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
H LinaritePbCu(SO4)(OH)2
H Goethiteα-Fe3+O(OH)
H LeadhillitePb4(CO3)2(SO4)(OH)2
H Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
CCarbon
C CerussitePbCO3
C CalciteCaCO3
C SideriteFeCO3
C LeadhillitePb4(CO3)2(SO4)(OH)2
OOxygen
O LinaritePbCu(SO4)(OH)2
O BaryteBaSO4
O QuartzSiO2
O CerussitePbCO3
O PyromorphitePb5(PO4)3Cl
O MimetitePb5(AsO4)3Cl
O BindheimitePb2Sb2O6O
O CalciteCaCO3
O SideriteFeCO3
O AnglesitePbSO4
O Goethiteα-Fe3+O(OH)
O LeadhillitePb4(CO3)2(SO4)(OH)2
O Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
SiSilicon
Si QuartzSiO2
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S GalenaPbS
S LinaritePbCu(SO4)(OH)2
S ArsenopyriteFeAsS
S BaryteBaSO4
S SphaleriteZnS
S Galena (var: Argentiferous Galena)PbS
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
S AnglesitePbSO4
S ChalcopyriteCuFeS2
S PyriteFeS2
S LeadhillitePb4(CO3)2(SO4)(OH)2
S Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
ClChlorine
Cl PyromorphitePb5(PO4)3Cl
Cl MimetitePb5(AsO4)3Cl
CaCalcium
Ca CalciteCaCO3
FeIron
Fe ArsenopyriteFeAsS
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Fe SideriteFeCO3
Fe Goethiteα-Fe3+O(OH)
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
CuCopper
Cu LinaritePbCu(SO4)(OH)2
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Cu ChalcopyriteCuFeS2
Cu Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
Zn Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2O
AsArsenic
As ArsenopyriteFeAsS
As MimetitePb5(AsO4)3Cl
SbAntimony
Sb BindheimitePb2Sb2O6O
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S13
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS
Pb LinaritePbCu(SO4)(OH)2
Pb CerussitePbCO3
Pb PyromorphitePb5(PO4)3Cl
Pb MimetitePb5(AsO4)3Cl
Pb Galena (var: Argentiferous Galena)PbS
Pb BindheimitePb2Sb2O6O
Pb AnglesitePbSO4
Pb LeadhillitePb4(CO3)2(SO4)(OH)2

Mindat Articles

Wheal Exmouth, Teign Valley, Devon. by Chris Popham


Other Regions, Features and Areas containg this locality

British IslesGroup of Islands
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