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Graigwen Mine (Nant-Goch Mine), Barmouth, Gwynedd, Wales, UKi
| Regional Level Types | |
|---|---|
| Graigwen Mine (Nant-Goch Mine) | Mine |
| Barmouth | Community |
| Gwynedd | County |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
52° 44' 58'' North , 3° 59' 34'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SH655188
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Barmouth | 2,315 (2017) | 5.2km |
| Dyffryn Ardudwy | 1,654 (2012) | 5.7km |
| Tal-y-bont | 1,540 (2017) | 7.2km |
| Dolgellau | 2,688 (2017) | 7.2km |
| Fairbourne | 721 (2017) | 7.3km |
Other/historical names associated with this locality:
Merionethshire
Minor workings about a mile west of Bontddu. First worked in 1895 and then sporadically and intermittently until 1950.
There are two separate lodes, an upper one at about 700ft above sea level on the side of the hill of Y Vigra, and a second, lower one, near the cottage of Graigwen. Two adits were driven on the upper lode, but only a small excavation on the lower lode.
Chalcopyrite, galena, pyrite and pyrrhotite are the chief ore minerals. Although there is no official recorded gold output, the owner in 1950 offered to provide the gold for Princess Elizabeth's wedding ring.
Refs.:
Goldmining in Western Merioneth, T. A. Morrison (undated)
The Gold Mines of Merioneth, G.W. Hall (undated)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
- AvaloniaVolcanic Arc
EuropeContinent
UK
- Wales
- Cambrian MountainsMountain Range
- Gwynedd
- Snowdonia National ParkNational Park
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