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Gwaithgoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UKi
Regional Level Types
Gwaithgoch MineMine
Pontrhydygroes- not defined -
Upper Llanfihangell-y-Creuddyn- not defined -
Ceredigion- not defined -
WalesCountry
UKCountry

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Latitude & Longitude (WGS84): 52° 19' 59'' North , 3° 53' 36'' West
Latitude & Longitude (decimal): 52.33321,-3.89344
GeoHash:G#: gcm1xquzh
UK National Grid Reference:SN710723
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Pontrhydfendigaid712 (2017)6.0km
Llanilar1,085 (2017)9.4km
Capel Bangor256 (2017)9.4km
Tregaron1,213 (2017)12.9km
Penparcau3,088 (2011)14.5km
Other/historical names associated with this locality:Dyfed; Cardiganshire


An old lead mine abandoned since the latter 1800s. Ruins here are the remains of a more modern crushing and dressing plant began here with government finance during the 1st World War to rework the massive dumps at Frongoch Mine (about 2 miles away) for lead and zinc.

Linked to Frongoch by a long causeway over the River Ystwyth after the war, the project foundered soon after due to heavy falls in metal prices. A resurgence in metal prices in the late 1920s led to a reopening, with a considerable tonnage being treated before prices fell again and the mill being abandoned.

Ref: The Old Metal Mines of Mid Wales, Part 1 Cardiganshire - South of Devil's Bridge. David E Bick. 1976

The principal feature in evidence in 2018 is the extensive spoil heap up the valley side. Approximately 2/3 of the way up there is a slight bench in the slope with a open adit and abundant galena and sphalerite at the adit mouth. Above this entrance is a step of barren rock then a further spoil heap and above that amongst the grass another open adit entrance (also flooded) clear evidence of at least 1 shaft collar and a linear shallow gunnis running parallel to the valley side.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
British IslesGroup of Islands

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

'Bindheimite'
Formula: Pb2Sb2O6O
Reference: National Museum of Wales database; National Museum of Wales database
Bottinoite
Formula: Ni2+Sb5+2(OH)12 · 6H2O
Reference: National Museum of Wales database; National Museum of Wales database
Galena
Formula: PbS
Reference: Chris Popham Collection
Gypsum
Formula: CaSO4 · 2H2O
Reference: National Museum of Wales database; National Museum of Wales database
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Reference: National Museum of Wales database; National Museum of Wales database
Linarite
Formula: PbCu(SO4)(OH)2
Reference: Chris Popham Collection
Millerite
Formula: NiS
Reference: National Museum of Wales database; National Museum of Wales database
Sphalerite
Formula: ZnS
Reference: Chris Popham Collection
Ullmannite
Formula: NiSbS
Reference: National Museum of Wales database; National Museum of Wales database

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Millerite2.CC.20NiS
Sphalerite2.CB.05aZnS
Ullmannite2.EB.25NiSbS
Group 4 - Oxides and Hydroxides
'Bindheimite'4.DH.20Pb2Sb2O6O
Bottinoite4.FH.05Ni2+Sb5+2(OH)12 · 6H2O
Group 5 - Nitrates and Carbonates
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Linarite7.BC.65PbCu(SO4)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Millerite2.8.16.1NiS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Ullmannite2.12.3.3NiSbS
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)3
Bottinoite6.3.9.1Ni2+Sb5+2(OH)12 · 6H2O
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Linarite30.2.3.1PbCu(SO4)(OH)2
Group 44 - ANTIMONATES
A2X2O6(O,OH,F)
'Bindheimite'44.1.1.2Pb2Sb2O6O

List of minerals for each chemical element

HHydrogen
H HydrozinciteZn5(CO3)2(OH)6
H BottinoiteNi2+Sb25+(OH)12 · 6H2O
H GypsumCaSO4 · 2H2O
H LinaritePbCu(SO4)(OH)2
CCarbon
C HydrozinciteZn5(CO3)2(OH)6
OOxygen
O BindheimitePb2Sb2O6O
O HydrozinciteZn5(CO3)2(OH)6
O BottinoiteNi2+Sb25+(OH)12 · 6H2O
O GypsumCaSO4 · 2H2O
O LinaritePbCu(SO4)(OH)2
SSulfur
S MilleriteNiS
S UllmanniteNiSbS
S GypsumCaSO4 · 2H2O
S GalenaPbS
S SphaleriteZnS
S LinaritePbCu(SO4)(OH)2
CaCalcium
Ca GypsumCaSO4 · 2H2O
NiNickel
Ni MilleriteNiS
Ni UllmanniteNiSbS
Ni BottinoiteNi2+Sb25+(OH)12 · 6H2O
CuCopper
Cu LinaritePbCu(SO4)(OH)2
ZnZinc
Zn HydrozinciteZn5(CO3)2(OH)6
Zn SphaleriteZnS
SbAntimony
Sb BindheimitePb2Sb2O6O
Sb UllmanniteNiSbS
Sb BottinoiteNi2+Sb25+(OH)12 · 6H2O
PbLead
Pb BindheimitePb2Sb2O6O
Pb GalenaPbS
Pb LinaritePbCu(SO4)(OH)2

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

Silurian
419.2 - 443.8 Ma



ID: 3185808
Paleozoic sedimentary rocks

Age: Silurian (419.2 - 443.8 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]

Silurian
419.2 - 443.8 Ma



ID: 3160805
Silurian claystone

Age: Silurian (419.2 - 443.8 Ma)

Lithology: Major:{claystone}, Minor{sandstone,limestone}

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]

Llandovery
433.4 - 443.8 Ma



ID: 2034671
Llandovery Rocks (Undifferentiated)

Age: Llandovery (433.4 - 443.8 Ma)

Lithology: Mudstone, siltstone and sandstone

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

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


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