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Bwlch Glas Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UKi
Regional Level Types
Bwlch Glas MineMine (Abandoned)
Tal-y-bontVillage
Ceulanymaesmawr- not defined -
CeredigionCounty
WalesCountry
UKCountry

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Latitude & Longitude (WGS84):
52° 28' 20'' North , 3° 54' 3'' West
Latitude & Longitude (decimal):
52.47248,-3.90089
GeoHash:
G#: gcm4x0r6q
GRN:
N35W02
UK National Grid Reference:
SN709878
Type:
Mine (Abandoned) - last checked 2019
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Capel Bangor256 (2017)9.0km
Bow Street1,572 (2017)9.2km
Borth1,269 (2017)10.3km
Aberdyfi725 (2017)12.6km
Machynlleth2,235 (2017)13.6km
Mindat Locality ID:
4265
Long-form identifier:
mindat:1:2:4265:2
GUID (UUID V4):
3188a91a-31d9-4f9d-b82f-b93b3d922e2a
Other/historical names associated with this locality:
Dyfed; Cardiganshire


The mine is probably best known for its occurrence of pyromorphite, from a vertical pipe in the roof of the adit (pyromorphite is also found in other areas in this adit level). The mine was developed on two veins possibly associated with the Hafan fault. Recorded working at the mine is very late in relationship to other mines in mid-Wales. And was being worked on a number of occasions from 1882 to 1916, producing 1240 tons of lead ore and 99 tons of zinc ore.


Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


19 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Anglesite
Formula: PbSO4
Habit: Bladed, and blocky
Colour: Colourless
Description: Colourless xls to 1mm with cerussite, susannite, caledonite, and malachite
β“˜ 'Bindheimite'
Formula: Pb2Sb2O6O
Habit: Massive, powdery
Colour: Shades of yellow
β“˜ Caledonite
Formula: Pb5Cu2(SO4)3(CO3)(OH)6
Habit: Prismatic
Colour: Blue
Description: Light blue xls to 0.5mm with cerussite, susannite.
β“˜ Cerussite
Formula: PbCO3
Habit: Various
Colour: Colourless, white, creamy
Description: Colourless to creamy xls to 1cm+.
β“˜ Chalcopyrite
Formula: CuFeS2
Habit: Massive
β“˜ Chenite ?
Formula: Pb4Cu(SO4)2(OH)6
Description: Unconfirmed from this mine. The crystal form, colour and association would be correct for this species
References:
S Rust
β“˜ Cinnabar
Formula: HgS
Habit: Powdery
Colour: Red, orange red
β“˜ Galena
Formula: PbS
Habit: Massive
β“˜ Greenockite
Formula: CdS
Habit: Very thin crusts
Colour: Yellow, bright yellow
β“˜ Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Habit: Bladed crystals
Colour: Colourless
β“˜ Hydrozincite
Formula: Zn5(CO3)2(OH)6
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Habit: Botryoidal
Colour: Pale green, green
β“˜ Mattheddleite
Formula: Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
References:
S.Rust Collection
β“˜ Pyromorphite
Formula: Pb5(PO4)3Cl
Habit: Prismatic, drusey.
Colour: Shades of green, yellow to pale orange
Description: Mostly grass green xls to 5mm, forming drusy crusts to several cms. Has been found as yellow to yellow-orange micro-crystals. Associated with cerussite, and wulfenite.
β“˜ Quartz
Formula: SiO2
Habit: Massive, typical crystal habits
Colour: White-colourless
β“˜ Sphalerite
Formula: ZnS
Habit: Massive
Colour: Brown
β“˜ Steverustite
Formula: Pb2+5(OH)5[Cu+(S6+O3S2-)3](H2O)2
References:
S. Rust collection
β“˜ Susannite
Formula: Pb4(CO3)2(SO4)(OH)2
Habit: Platy pseudohexagonal
Colour: Colourless-creamy
Description: Colourless pseudohexagonal xls to 0.5mm, with cerussite, anglesite, and caledonite.
β“˜ Ullmannite
Formula: NiSbS
β“˜ Wulfenite
Formula: Pb(MoO4)
Habit: Bipyramiddle, tabular, blocky
Colour: Orange, yellow-orange
Description: Orange to yellow-orange bipyramiddle and tabular xls to 1mm. With pyromorphite, and cerussite

Gallery:

PbSO4β“˜ Anglesite
PbCO3β“˜ Cerussite
PbSβ“˜ Galena
Pb5(PO4)3Clβ“˜ Pyromorphite
Pb4(CO3)2(SO4)(OH)2β“˜ Susannite
Pb(MoO4)β“˜ Wulfenite

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Greenockite2.CB.45CdS
β“˜Galena2.CD.10PbS
β“˜Cinnabar2.CD.15aHgS
β“˜Ullmannite2.EB.25NiSbS
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
β“˜'Bindheimite'4.DH.20Pb2Sb2O6O
Group 5 - Nitrates and Carbonates
β“˜Cerussite5.AB.15PbCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
β“˜Hydrozincite5.BA.15Zn5(CO3)2(OH)6
β“˜Susannite5.BF.40Pb4(CO3)2(SO4)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Anglesite7.AD.35PbSO4
β“˜Caledonite7.BC.50Pb5Cu2(SO4)3(CO3)(OH)6
β“˜Chenite ?7.BC.70Pb4Cu(SO4)2(OH)6
β“˜Wulfenite7.GA.05Pb(MoO4)
β“˜Steverustite7.JA.10Pb2+5(OH)5[Cu+(S6+O3S2-)3](H2O)2
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Pyromorphite8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
β“˜Mattheddleite9.AH.25Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
β“˜Hemimorphite9.BD.10Zn4Si2O7(OH)2 Β· H2O

List of minerals for each chemical element

HHydrogen
Hβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Hβ“˜ ChenitePb4Cu(SO4)2(OH)6
Hβ“˜ HemimorphiteZn4Si2O7(OH)2 · H2O
Hβ“˜ HydrozinciteZn5(CO3)2(OH)6
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Hβ“˜ SusannitePb4(CO3)2(SO4)(OH)2
Hβ“˜ SteverustitePb52+(OH)5[Cu+(S6+O3S2-)3](H2O)2
CCarbon
Cβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Cβ“˜ CerussitePbCO3
Cβ“˜ HydrozinciteZn5(CO3)2(OH)6
Cβ“˜ MalachiteCu2(CO3)(OH)2
Cβ“˜ SusannitePb4(CO3)2(SO4)(OH)2
OOxygen
Oβ“˜ AnglesitePbSO4
Oβ“˜ BindheimitePb2Sb2O6O
Oβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Oβ“˜ CerussitePbCO3
Oβ“˜ ChenitePb4Cu(SO4)2(OH)6
Oβ“˜ HemimorphiteZn4Si2O7(OH)2 · H2O
Oβ“˜ HydrozinciteZn5(CO3)2(OH)6
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Oβ“˜ PyromorphitePb5(PO4)3Cl
Oβ“˜ QuartzSiO2
Oβ“˜ SusannitePb4(CO3)2(SO4)(OH)2
Oβ“˜ WulfenitePb(MoO4)
Oβ“˜ SteverustitePb52+(OH)5[Cu+(S6+O3S2-)3](H2O)2
SiSilicon
Siβ“˜ HemimorphiteZn4Si2O7(OH)2 · H2O
Siβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Siβ“˜ QuartzSiO2
PPhosphorus
Pβ“˜ PyromorphitePb5(PO4)3Cl
SSulfur
Sβ“˜ AnglesitePbSO4
Sβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChenitePb4Cu(SO4)2(OH)6
Sβ“˜ CinnabarHgS
Sβ“˜ GalenaPbS
Sβ“˜ GreenockiteCdS
Sβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Sβ“˜ SphaleriteZnS
Sβ“˜ SusannitePb4(CO3)2(SO4)(OH)2
Sβ“˜ UllmanniteNiSbS
Sβ“˜ SteverustitePb52+(OH)5[Cu+(S6+O3S2-)3](H2O)2
ClChlorine
Clβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Clβ“˜ PyromorphitePb5(PO4)3Cl
FeIron
Feβ“˜ ChalcopyriteCuFeS2
NiNickel
Niβ“˜ UllmanniteNiSbS
CuCopper
Cuβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChenitePb4Cu(SO4)2(OH)6
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ SteverustitePb52+(OH)5[Cu+(S6+O3S2-)3](H2O)2
ZnZinc
Znβ“˜ HemimorphiteZn4Si2O7(OH)2 · H2O
Znβ“˜ HydrozinciteZn5(CO3)2(OH)6
Znβ“˜ SphaleriteZnS
MoMolybdenum
Moβ“˜ WulfenitePb(MoO4)
CdCadmium
Cdβ“˜ GreenockiteCdS
SbAntimony
Sbβ“˜ BindheimitePb2Sb2O6O
Sbβ“˜ UllmanniteNiSbS
HgMercury
Hgβ“˜ CinnabarHgS
PbLead
Pbβ“˜ AnglesitePbSO4
Pbβ“˜ BindheimitePb2Sb2O6O
Pbβ“˜ CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Pbβ“˜ CerussitePbCO3
Pbβ“˜ ChenitePb4Cu(SO4)2(OH)6
Pbβ“˜ GalenaPbS
Pbβ“˜ MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)
Pbβ“˜ PyromorphitePb5(PO4)3Cl
Pbβ“˜ SusannitePb4(CO3)2(SO4)(OH)2
Pbβ“˜ WulfenitePb(MoO4)
Pbβ“˜ SteverustitePb52+(OH)5[Cu+(S6+O3S2-)3](H2O)2

Other Regions, Features and Areas containing this locality

British and Irish 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.

References

Braithwaite, R.S.W. (1982): Pyromorphite, wulfenite and other minerals from the Bwlch-Glas mine central Wales. Mineralogical Record 13: 151-153
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