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Great Work Mine (incl. Leeds Mine), Godolphin Cross, Breage, Cornwall, England, UKi
Regional Level Types
Great Work Mine (incl. Leeds Mine)Mine (Abandoned)
Godolphin Cross- not defined -
BreageCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Key
Latitude & Longitude (WGS84):
50° 7' 40'' North , 5° 21' 55'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW595308
Locality type:
Mine (Abandoned) - last checked 2019
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Germoe175 (2017)1.7km
Breage471 (2017)3.1km
Leedstown267 (2017)3.7km
Porthleven3,059 (2017)5.8km
Helston12,184 (2017)7.3km


Mine dating from at least 1540. Major tin producer in the 19th century. The workings occupy the saddle between Godolphin Hill and Tregonning Hill. Coordinates are those of Leeds shaft, whose engine house was recently (2005) restored. Thomas Epsley in 1689 first introduced blasting into mining at this location.

Where Wheal Breage Lode passed from granite into greenstone, the tin ore it contained in the former disappeared instantly (Henwood, 1843).

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


12 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
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), pp. 106-107.
Cassiterite
Formula: SnO2
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.; 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.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Chalcopyrite
Formula: CuFeS2
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190 pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 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), pp. 106-107
Chalcopyrite var: Blister Copper
Formula: CuFeS2
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.
'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), pp. 106-107
Cuprite
Formula: Cu2O
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), pp. 106-107.
Cuprite var: Tile ore
Formula: Cu2O
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), pp. 106-107.
Fluorite
Formula: CaF2
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), pp. 106-107.
Goethite
Formula: α-Fe3+O(OH)
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Gypsum
Formula: CaSO4 · 2H2O
Reference: Collection Richard De Nul
'K Feldspar'
Reference: Collection Richard De Nul
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Collection Richard De Nul
'Limonite'
Formula: (Fe,O,OH,H2O)
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), pp. 106-107
Pyrite
Formula: FeS2
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), pp. 106-107
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), pp. 106-107.
Siderite
Formula: FeCO3
Reference: Collection Richard De Nul
Sulphur
Formula: S8
Reference: Collection Richard De Nul
'Tennantite'
Formula: Cu6(Cu4X2)As4S12S
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 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), pp. 106-107
Tenorite
Formula: CuO
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.; 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), pp. 106-107
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
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), pp. 106-107.
'Zinnwaldite'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
var: Blister Copper2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
'Tennantite'2.GB.05Cu6(Cu4X2)As4S12S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Cuprite4.AA.10Cu2O
var: Tile ore4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Limonite'-(Fe,O,OH,H2O)
'Wolframite'-(Fe2+)WO4to (Mn2+)WO4
'Zinnwaldite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur1.3.5.1S8
Group 2 - SULFIDES
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
'Tennantite'3.3.6.2Cu6(Cu4X2)As4S12S
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
AX2
Cassiterite4.4.1.5SnO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Chalcopyrite
var: Blister Copper
-CuFeS2
'Chlorite Group'-
Cuprite
var: Tile ore
-Cu2O
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Limonite'-(Fe,O,OH,H2O)
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4
'Zinnwaldite'-

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
H Limonite(Fe,O,OH,H2O)
H Goethiteα-Fe3+O(OH)
CCarbon
C SideriteFeCO3
OOxygen
O CassiteriteSnO2
O SideriteFeCO3
O GypsumCaSO4 · 2H2O
O K Feldspar (var: Adularia)KAlSi3O8
O QuartzSiO2
O Limonite(Fe,O,OH,H2O)
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
O TenoriteCuO
O Cuprite (var: Tile ore)Cu2O
O Goethiteα-Fe3+O(OH)
O CupriteCu2O
FFluorine
F FluoriteCaF2
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
SiSilicon
Si K Feldspar (var: Adularia)KAlSi3O8
Si QuartzSiO2
SSulfur
S PyriteFeS2
S SulphurS8
S GypsumCaSO4 · 2H2O
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S TennantiteCu6(Cu4X2)As4S12S
S Chalcopyrite (var: Blister Copper)CuFeS2
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
CaCalcium
Ca GypsumCaSO4 · 2H2O
Ca FluoriteCaF2
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe SideriteFeCO3
Fe PyriteFeS2
Fe ArsenopyriteFeAsS
Fe Limonite(Fe,O,OH,H2O)
Fe ChalcopyriteCuFeS2
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
Fe Goethiteα-Fe3+O(OH)
Fe Chalcopyrite (var: Blister Copper)CuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
Cu TenoriteCuO
Cu Cuprite (var: Tile ore)Cu2O
Cu TennantiteCu6(Cu4X2)As4S12S
Cu Chalcopyrite (var: Blister Copper)CuFeS2
Cu CupriteCu2O
AsArsenic
As ArsenopyriteFeAsS
As TennantiteCu6(Cu4X2)As4S12S
SnTin
Sn CassiteriteSnO2
WTungsten
W Wolframite(Fe2+)WO4 to (Mn2+)WO4

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Henwood, W.J. (1843): On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall 5, 1-386.

Other Regions, Features and Areas containing this locality

British 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.
 
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