Wemyss Mine, Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UKi
| Regional Level Types | |
|---|---|
| Wemyss Mine | Mine (Abandoned) |
| Frongoch Mine | Mine (Abandoned) |
| Pontrhydygroes | Village |
| Upper Llanfihangell-y-Creuddyn | Parish |
| Ceredigion | County |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
52° 21' 3'' North , 3° 53' 12'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SN716742
Type:
Mine (Abandoned) - last checked 2020
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Pontrhydfendigaid | 712 (2017) | 7.8km |
| Capel Bangor | 256 (2017) | 8.1km |
| Llanilar | 1,085 (2017) | 9.5km |
| Bow Street | 1,572 (2017) | 13.9km |
| Penparcau | 3,088 (2011) | 14.0km |
Other/historical names associated with this locality:
Dyfed; Cardiganshire
With the road running right through the middle of the site there is a good deal to see. Contained within the bend of the road is a huge pile of crushed sand. On the upslope side of the road are the imposing ruins of the processing plant and to the left a high wall of the aqueduct with part of the arch of a tunnel still visible in its base. Another aqueduct shared the line of a tramway linking the processing plant to Frongoch Mine at the top of the hill and a deep cutting is bridged over by the road to Frongoch Mine.
Small dumps are present further down the road towards the farmhouse with a sand dump spread out over the field on the opposite side of the road suggesting perhaps an independent venture.
In the 1800's, the Wemyss Mine was purchased by Frongoch, so that the Wemyss mine adit on the hillside to the west could be used to drain the Frongoch workings. A tunnel was driven to connect the mines underground for this purpose.
Large quantities of galena are present in the tips intimately associated with bright white quartz. Elsewhere brown decomposed sphalerite is more commonly associated with the slate.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities5 valid minerals.
Detailed Mineral List:
| ⓘ 'Chlorite Group' References: |
| ⓘ Galena Formula: PbS Description: At all the other mines I have visited within a 10 mile radius (around Cwmystwyth and Ysbyty Ystwyth area) it has been common for the galena to occur as deposits directly onto the slate, often just as thin coverings but also as larger nodules. At Wemyss however it is notable that the galena is almost always intimately associated with bright white quartz suggesting the two minerals were deposited simultaneously and the two are very common as fist size lumps or larger. References: |
| ⓘ Pyrite Formula: FeS2 Description: One piece of slate found with a dusting of 1mm cubes with bright clean surfaces References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Smithsonite Formula: ZnCO3 Description: Thin botryoidal crusts, white with a slight greasy sheen, associated with sphalerite but the best looking samples are on the even, flat surfaces of surrounding quartz or galena References: |
| ⓘ Sphalerite Formula: ZnS References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Smithsonite | 5.AB.05 | ZnCO3 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Smithsonite | ZnCO3 |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Smithsonite | ZnCO3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Zn | Zinc | |
| Zn | ⓘ Smithsonite | ZnCO3 |
| Zn | ⓘ Sphalerite | ZnS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Localities in this Region
- Wales
- Ceredigion
- Upper Llanfihangell-y-Creuddyn
- Pontrhydygroes
- Frongoch Mine
- Wemyss Mine
- Frongoch Mine
- Pontrhydygroes
- Upper Llanfihangell-y-Creuddyn
- Ceredigion
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
- AvaloniaVolcanic Arc
EuropeContinent
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Wemyss Mine, Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK