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Coosheen Mine (Cosheen Mine; Skull Bay Mine), Coosheen, Schull, Mizen Peninsula, Co. Cork, Munster, Irelandi
Regional Level Types
Coosheen Mine (Cosheen Mine; Skull Bay Mine)Mine
Coosheen- not defined -
Schull- not defined -
Mizen PeninsulaPeninsula
Co. CorkCounty
MunsterProvince
IrelandCountry

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Key
Latitude & Longitude (WGS84):
51° 31' 27'' North , 9° 31' 40'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Schull658 (2013)1.4km
Ballydehob271 (2017)6.1km
Durrus334 (2017)10.8km
Baltimore347 (2015)11.9km
Skibbereen2,098 (2012)18.3km


V945310

Once dubbed the "richest mine in the world" by a correspondent with the London Times, the Coosheen mine worked a small but extremely rich copper deposit close to the surface from 1839-1877. The mine briefly reopened in 1888-1890 and again in 1906-1907 but only produced a trivial amount of ore. The mine produced a total recorded output of around 2,500 tons of ore and reached a maximum depth of ~100m.

Exceptional specimens of botryoidal malachite were mined from Thomas's lode ca. 1861 and described as being "30-50 pound specimens". This was likely what led to the mines' dubbed richness. So good and renowned was the malachite that it was reportedly used as an ornamental stone. Sadly there are astonishingly few specimens of malachite from the mine preserved today in collections.

There is very little mineralized material visible today. Mineralized spoil can be found along the shoreline at the base of the golf course and in walls and hedgerows.

A sizeable portion of the minesite is now occupied by a derelict golf course where the remains of a recently renovated powder house and back-filled adit level can be seen. On the top of the hill 5 fenced off shafts can be seen and the largely obliterated ruins of the engine house built in August 1860 (bulldozed by the local council in the 1980's as it was deemed both dangerous and an eyesore!).

ITM Grid References for Coosheen mine features

Feature Grid Reference (ITM)
Main mine site 494530 531371
Ruins of engine house 494508 531374
Powder house 494070 531274
Entrance to ?deep adit 494091 531279
Mineshafts*
Shaft 1 494400 531368
Shaft 2 494453 531376
Shaft 3 494489 531417
Shaft 4 (Engine Shaft) 494508 531375
Shaft 5 (Diagonal Shaft?) 494547 531364

*Shafts listed in order going from West to East. Also note that above grid references are for existing shafts only. Totally obliterated shafts of which there is no visible evidence have been omitted. This list may be incomplete.

Production Statistics for Coosheen Mine 1840-1877

Year Tons (Ore) %Cu Value (£) Average Standard (£)
1840 197 ? ? 109
1841 264 (+35) ? ? 119
1842 308 ? ? 120
1843 360 (+84) ? ? 110
1844 608 ? ? 109
1845 125 ? ? 104
1846 46 ? ? 106
1847 49 ? ? 104
Abandoned?
1854 45 18% 905 ?
1855 135 11% ? ?
1857 44 19% 1029 139
1860 45 ? ~400 133
1861 49 4% 473 131
1862 53 3% ? 124
1870 4 12% 34 98
1872 6 22% 102 120
1873 35 7% 219 103
1874 12 6% 78 103
1875 4 8% 28 113
1877 9 12% 73 97
Abandoned
1888 16 5% ? ?
1890 70 ? ? ?
Abandoned
1906 13 6% ? ?
1907 15 8% ? ?
Closed
Total (recorded) 2512 Avg. %10

09754380014946788157872.png
Longitudinal section of the workings dated 11th February 1878.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Dr Richard Unitt Collection
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Dr Richard Unitt Collection
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: No reference listed
Baryte
Formula: BaSO4
Reference: Cornwall
Bornite
Formula: Cu5FeS4
Reference: Barry Flannery (personal observation); Mineralogist's directory: or, A guide to the principal mineral localities of ... By Townshend M. Hall
Botallackite
Formula: Cu2(OH)3Cl
Description: Small, usually less than 0.5mm, blue-green, often bladed (rectangular or square) crystals associated with oxidized ore in specimens exposed to seawater.
Reference: Dr Richard Unitt collection
Brochantite
Formula: Cu4(SO4)(OH)6
Reference: Dr Richard Unitt Collection
Calcite
Formula: CaCO3
Reference: Dr Richard Unitt Collection
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), 190pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Chlorite Group'
Reference: Dr Richard Unitt Collection
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Dr Richard Unitt Collection
Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
Reference: Dr Richard Unitt Collection
Covellite
Formula: CuS
Description: Deep metallic blue coatings on copper ores, especially chalcopyrite and bornite. Also in heavily oxidized material associated with botallackite, and cuprite.
Reference: Dr Richard Unitt collection
Cuprite
Formula: Cu2O
Reference: Dr Richard Unitt Collection; A glossary of mineralogy By Henry William Bristow; Mineralogist's directory: or, A guide to the principal mineral localities of ... By Townshend M. Hall
Hematite
Formula: Fe2O3
Reference: Cornwall; ; Mineralogist's directory: or, A guide to the principal mineral localities of ... By Townshend M. Hall
Malachite
Formula: Cu2(CO3)(OH)2
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.
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Dr Richard Unitt Collection
Pseudomalachite
Formula: Cu5(PO4)2(OH)4
Reference: Ryback, G. & Moreton, S. (1991) Microminerals from Ireland. Part 1: The South-West (Munster). UK Journal of Mines & Minerals, no. 10, p.22-27.
Quartz
Formula: SiO2
Reference: Cornwall
Rutile
Formula: TiO2
Reference: Dr Richard Unitt Collection
'Tetrahedrite'
Formula: Cu6(Cu4X2)Sb4S13
Reference: Cornwall

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
'Tetrahedrite'2.GB.05Cu6(Cu4X2)Sb4S13
Group 3 - Halides
Botallackite3.DA.10bCu2(OH)3Cl
Connellite3.DA.25Cu19(SO4)(OH)32Cl4 · 3H2O
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Pseudomalachite8.BD.05Cu5(PO4)2(OH)4
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 3 - SULFOSALTS
3 <ø < 4
'Tetrahedrite'3.3.6.1Cu6(Cu4X2)Sb4S13
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A2(O,OH)3Xq
Botallackite10.1.3.1Cu2(OH)3Cl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq·xH2O, where m:p > 6:1
Connellite31.1.1.1Cu19(SO4)(OH)32Cl4 · 3H2O
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq
Pseudomalachite41.4.3.1Cu5(PO4)2(OH)4
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H PseudomalachiteCu5(PO4)2(OH)4
H BrochantiteCu4(SO4)(OH)6
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H BotallackiteCu2(OH)3Cl
H ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
H ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O AzuriteCu3(CO3)2(OH)2
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O BaryteBaSO4
O HematiteFe2O3
O PseudomalachiteCu5(PO4)2(OH)4
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O BrochantiteCu4(SO4)(OH)6
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O CupriteCu2O
O BotallackiteCu2(OH)3Cl
O ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
O ApatiteCa5(PO4)3(Cl/F/OH)
O Monazite-(Ce)Ce(PO4)
O RutileTiO2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si QuartzSiO2
Si AlbiteNa(AlSi3O8)
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
PPhosphorus
P PseudomalachiteCu5(PO4)2(OH)4
P ApatiteCa5(PO4)3(Cl/F/OH)
P Monazite-(Ce)Ce(PO4)
SSulfur
S BaryteBaSO4
S TetrahedriteCu6(Cu4X2)Sb4S13
S BorniteCu5FeS4
S BrochantiteCu4(SO4)(OH)6
S ChalcopyriteCuFeS2
S CovelliteCuS
S ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
ClChlorine
Cl BotallackiteCu2(OH)3Cl
Cl ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cl ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Ca CalciteCaCO3
Ca ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Ti RutileTiO2
FeIron
Fe HematiteFe2O3
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu TetrahedriteCu6(Cu4X2)Sb4S13
Cu BorniteCu5FeS4
Cu PseudomalachiteCu5(PO4)2(OH)4
Cu BrochantiteCu4(SO4)(OH)6
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu ChalcopyriteCuFeS2
Cu CupriteCu2O
Cu BotallackiteCu2(OH)3Cl
Cu CovelliteCuS
Cu ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
SbAntimony
Sb TetrahedriteCu6(Cu4X2)Sb4S13
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Monazite-(Ce)Ce(PO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
E. Harvey Wadge (1866) Irish Industrial Magazine p.139 (References to malachite specimens)
Cole, G.A.J. (1922) Memoirs of Localities of Minerals of Economic Importance and Metalliferous Mines in Ireland, p.54
Cowman, D. & Reilly, T.A. (1988) The Abandoned Mines of West Carbery - Promoters, Adventures and Miners
Hodnett, D. (2010) The Metal Mines of West Cork (2010)
Hunt, R. (numerous) Mineral statistics of the United Kingdom of Great Britain and Ireland
Barry Flannery (personal observations 29th July 2009)

External Links


Other Regions, Features and Areas containg this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent

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