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Stage mine, Knockmahon, Bonmahon (Bunmahon), Co. Waterford, Munster, Irelandi
Regional Level Types
Stage mineMine
Knockmahon- not defined -
Bonmahon (Bunmahon)- not defined -
Co. WaterfordCounty
MunsterProvince
IrelandCountry

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Key
Latitude & Longitude (WGS84):
52° 8' 18'' North , 7° 21' 7'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Kill281 (2017)4.4km
Dunhill209 (2017)7.1km
Stradbally420 (2017)7.4km
Kilmacthomas871 (2017)9.0km
Lemybrien206 (2017)12.1km


Chalcopyrite/quartz veins, extensively mined from adits in the sea cliff, and from inland shafts.

The mine is said to have been at work during the reign of Elizabeth 1st (1558-1603), and it was also raising ores at other periods during the following century. In 1730, a Mr. Hume profitably worked the Stage Lode for some time and in 1796, Colonel Hall and Mr. Galway spent a large sum on the property without much success. The mine subsequently passed into the hands of the Hibernian Mining Company and was acquired in 1824 by the Mining Company of Ireland who continued working it with varying success during the following decades.

Stage lode was worked beneath the sea and at a depth of 106 fms, the level extends 150 fms from the foot of the cliff. At times, however, the shallower works were conducted incautiously and the crust of vein stone left standing was so thin that the sea found its way into the mine and only with great difficulty and at a great expense it was successfully dammed out.

"In April 1840, the imprudent removal of a prop caused many thousand tons of rubbish to fall on Michael Walsh of Bonmahon, one of several miners engaged at the sixty-six fathom level, beneath the sea. Although little or no hope of his safety remained, a strong party was instantly employed, as well to extricate the body that it might be decently buried, as to re-open the drift and repair the damage. After the men had worked some twenty-four hours, however, they were astonished to hear the voice of their lost comrade, who was shut in by masses of the fallen rocks. He told them that his knees almost touched his chin, that salt-water had risen nearly to his mouth, and that he had eaten his last candle." (Henwood, 1871)

Irish grid ref. X 444 986.
ITM 644363 598691

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

Atacamite
Formula: Cu2(OH)3Cl
Reference: Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Botallackite
Formula: Cu2(OH)3Cl
Reference: Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Calcite
Formula: CaCO3
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Chalcocite
Formula: Cu2S
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Chalcopyrite
Formula: CuFeS2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
'Chlorite Group'
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Clinoatacamite
Formula: Cu2(OH)3Cl
Reference: Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Copper
Formula: Cu
Reference: Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Cuprite
Formula: Cu2O
Reference: Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Dr Richard Unitt Collection
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626; Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
Pyrite
Formula: FeS2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Quartz
Formula: SiO2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626
Tenorite
Formula: CuO
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 540-626

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Group 3 - Halides
Atacamite3.DA.10aCu2(OH)3Cl
Botallackite3.DA.10bCu2(OH)3Cl
Clinoatacamite3.DA.10bCu2(OH)3Cl
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Quartz4.DA.05SiO2
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A2(O,OH)3Xq
Atacamite10.1.1.1Cu2(OH)3Cl
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
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Clinoatacamite-Cu2(OH)3Cl
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H AtacamiteCu2(OH)3Cl
H ClinoatacamiteCu2(OH)3Cl
H BotallackiteCu2(OH)3Cl
H MalachiteCu2(CO3)(OH)2
H Limonite(Fe,O,OH,H2O)
H JarositeKFe3+ 3(SO4)2(OH)6
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O AtacamiteCu2(OH)3Cl
O ClinoatacamiteCu2(OH)3Cl
O BotallackiteCu2(OH)3Cl
O CupriteCu2O
O MalachiteCu2(CO3)(OH)2
O CalciteCaCO3
O QuartzSiO2
O Limonite(Fe,O,OH,H2O)
O TenoriteCuO
O JarositeKFe3+ 3(SO4)2(OH)6
SiSilicon
Si QuartzSiO2
SSulfur
S PyriteFeS2
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S JarositeKFe3+ 3(SO4)2(OH)6
ClChlorine
Cl AtacamiteCu2(OH)3Cl
Cl ClinoatacamiteCu2(OH)3Cl
Cl BotallackiteCu2(OH)3Cl
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca CalciteCaCO3
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe JarositeKFe3+ 3(SO4)2(OH)6
CuCopper
Cu AtacamiteCu2(OH)3Cl
Cu ClinoatacamiteCu2(OH)3Cl
Cu BotallackiteCu2(OH)3Cl
Cu CupriteCu2O
Cu CopperCu
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu TenoriteCuO

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Henwood, W.J. (1871): Observations on Metalliferous Deposits: On Copper Mines in Ireland. Transactions of the Royal Geological Society of Cornwall 8(1), 540-626.
R. S. W. Braithwaite & J. I. Wilson (2001): Botallackite, including good crystals, from Ireland. Journal of the Russell Society, 7(2), 96.

Other Regions, Features and Areas containg this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent

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