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Curraghduff, Glan Mines, Oughterard, Connemara, Co. Galway, Irelandi
Regional Level Types
Curraghduff- not defined -
Glan MinesGroup of Mines
Oughterard- not defined -
Connemara- not defined -
Co. Galway- not defined -
IrelandCountry

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Latitude & Longitude (WGS84): 53° 28' 22'' North , 9° 24' 59'' West
Latitude & Longitude (decimal): 53.47294,-9.41655
GeoHash:G#: gc921wrn6
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Oughterard1,333 (2013)8.3km
Cong178 (2017)11.6km
Rosscahill295 (2017)14.7km
Headford889 (2013)21.0km
Ballinrobe2,704 (2013)21.5km


Largest of the Glan mines and most developed. On-site there are substantial spoil heaps although weathered. Also, there are signs of underground workings e.g. water-filled holes and large depressions...
The main mineralizations appear to be cubic pyrite crystals hosted in marble (Lakes Marble Formation) and also in quartz vugs that are infilled with calcite (10% HCl to fizz).
There is an abundance of copper coatings in the spoil heap generated by the pyrite. Massive silvery coloured pyrite appears to be the main ore and is very badly disintegrated.

Irish Grid Ref.: M060479

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
British IslesGroup of Islands
Ireland (island)Island

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Barry Flannery collection
Chalcopyrite
Formula: CuFeS2
Reference: Barry Flannery collection
Diopside
Formula: CaMgSi2O6
Reference: Barry Flannery collection
Dolomite
Formula: CaMg(CO3)2
Reference: Barry Flannery collection
Fluorite
Formula: CaF2
Reference: Barry Flannery collection
Galena
Formula: PbS
Reference: Barry Flannery collection
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Barry Flannery collection
Langite
Formula: Cu4(SO4)(OH)6 · 2H2O
Reference: Barry Flannery collection
Pyrite
Formula: FeS2
Reference: Barry Flannery collection
Quartz
Formula: SiO2
Reference: Cornwall
Scheelite
Formula: Ca(WO4)
Reference: Barry Flannery collection
Sphalerite
Formula: ZnS
Reference: Barry Flannery collection

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Langite7.DD.10Cu4(SO4)(OH)6 · 2H2O
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Diopside9.DA.15CaMgSi2O6
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3

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
Pyrite2.12.1.1FeS2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)4(XO4)Zq·xH2O
Langite31.4.3.1Cu4(SO4)(OH)6 · 2H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H LangiteCu4(SO4)(OH)6 · 2H2O
CCarbon
C DolomiteCaMg(CO3)2
C CalciteCaCO3
OOxygen
O Garnet GroupX3Z2(SiO4)3
O DiopsideCaMgSi2O6
O QuartzSiO2
O ScheeliteCa(WO4)
O DolomiteCaMg(CO3)2
O CalciteCaCO3
O LangiteCu4(SO4)(OH)6 · 2H2O
FFluorine
F FluoriteCaF2
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si DiopsideCaMgSi2O6
Si QuartzSiO2
SSulfur
S SphaleriteZnS
S PyriteFeS2
S GalenaPbS
S ChalcopyriteCuFeS2
S LangiteCu4(SO4)(OH)6 · 2H2O
CaCalcium
Ca FluoriteCaF2
Ca DiopsideCaMgSi2O6
Ca ScheeliteCa(WO4)
Ca DolomiteCaMg(CO3)2
Ca CalciteCaCO3
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
Cu LangiteCu4(SO4)(OH)6 · 2H2O
ZnZinc
Zn SphaleriteZnS
WTungsten
W ScheeliteCa(WO4)
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Early Carboniferous
323.2 - 358.9 Ma



ID: 3192030
Paleozoic sedimentary rocks

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Neoproterozoic
541 - 1000 Ma



ID: 3139046
Dalradian Supergroup

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Dalradian Supergroup

Description: marine molasse

Lithology: Major:{mica schist}, Minor{quartzite,marble,greenschist}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

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