Glasdir Mine, Brithdir and Llanfachreth, Gwynedd, Wales, UKi
| Regional Level Types | |
|---|---|
| Glasdir Mine | Mine (Abandoned) |
| Brithdir and Llanfachreth | Community |
| Gwynedd | County |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
52° 46' 59'' North , 3° 52' 6'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SH740223
Type:
Mine (Abandoned) - last checked 2020
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dolgellau | 2,688 (2017) | 4.7km |
| Dyffryn Ardudwy | 1,654 (2012) | 13.2km |
| Upper Corris | 200 (2010) | 13.6km |
| Trawsfynydd | 628 (2017) | 13.7km |
| Barmouth | 2,315 (2017) | 14.3km |
Mindat Locality ID:
5226
Long-form identifier:
mindat:1:2:5226:2
GUID (UUID V4):
092b0b13-3d39-4b2f-8617-043135e5f96e
Other/historical names associated with this locality:
Merionethshire
Although one of the most extensive mines in the Dolgellau gold belt, Glasdir, first opened as a quarry about 1852, was primarily a copper mine, with 13,077 tons of dressed copper ore leaving the mine between 1872 - 1913.
In 1907, the owner Stanley Elmore, who had previously built a mill for the Elmore Flotation Process at the Sygun copper mine at Bedgellert, transferred the plant and equipment to Glasdir when that mine failed.
Glasdir closed in 1915. The recorded output of precious metals between 1872-1915 was 8,275 ounces of silver (1913-14)and 735 ounces of gold (1914).
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 ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
7 valid minerals.
Detailed Mineral List:
| β Bornite Formula: Cu5FeS4 |
| β Chalcopyrite Formula: CuFeS2 |
| β Gibbsite Formula: Al(OH)3 |
| β Gold Formula: Au |
| β Pyrite Formula: FeS2 |
| β Thaumasite Formula: Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| β Wroewolfeite Formula: Cu4(SO4)(OH)6 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Bornite | 2.BA.15 | Cu5FeS4 |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Gibbsite | 4.FE.10 | Al(OH)3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Wroewolfeite | 7.DD.10 | Cu4(SO4)(OH)6 Β· 2H2O |
| β | Thaumasite | 7.DG.15 | Ca3(SO4)[Si(OH)6](CO3) Β· 12H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Gibbsite | Al(OH)3 |
| H | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| H | β Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
| C | Carbon | |
| C | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| O | Oxygen | |
| O | β Gibbsite | Al(OH)3 |
| O | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| O | β Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
| Al | Aluminium | |
| Al | β Gibbsite | Al(OH)3 |
| Si | Silicon | |
| Si | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| S | Sulfur | |
| S | β Bornite | Cu5FeS4 |
| S | β Chalcopyrite | CuFeS2 |
| S | β Pyrite | FeS2 |
| S | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| S | β Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
| Ca | Calcium | |
| Ca | β Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| Fe | Iron | |
| Fe | β Bornite | Cu5FeS4 |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Cu | Copper | |
| Cu | β Bornite | Cu5FeS4 |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
| Au | Gold | |
| Au | β Gold | Au |
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK
- Wales
- Cambrian MountainsMountain Range
- Snowdonia National ParkNational Park
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