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St John's Colliery, Maesteg, Bridgend, Wales, UKi
| Regional Level Types | |
|---|---|
| St John's Colliery | Colliery (Abandoned) |
| Maesteg | Town |
| Bridgend | County Borough |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
51° 36' 44'' North , 3° 37' 24'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SS876917
Type:
Colliery (Abandoned) - last checked 2020
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Maesteg | 21,001 (2017) | 2.4km |
| Pontycymer | 4,288 (2017) | 2.7km |
| Pont Rhyd-y-cyff | 1,505 (2017) | 3.0km |
| Croeserw | 1,595 (2016) | 3.8km |
| Blaengwynfi | 1,362 (2017) | 5.1km |
Other/historical names associated with this locality:
Mid Glamorgan; Glamorgan
St. Johns Colliery is located on the site of the old Cwmdu Colliery (1850 to 1908) that was worked by the Tondu and Ogmore Coal and Iron Co, and which worked the shallow Victoria seam until its exhaustion.
St. Johns Colliery was opened by North's Navigation Collieries Ltd. in 1910 and worked the middle and lower coal measures at a depth of 385 yards. In the late 1920s, 1,480 men were employed here.
The colliery, the last deep mine in the Llynfi valley, closed in November 1985. Heavily overgrown tips remain.
Although millerite is rare at this location, St. John's Colliery is one of the westernmost locations in the south Wales coalfield where millerite has been found to occur.
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
3 valid minerals.
Detailed Mineral List:
| ⓘ Galena Formula: PbS |
| ⓘ Millerite Formula: NiS |
| ⓘ 'Ozocerite' |
| ⓘ 'Ozocerite var. Hatchettite' |
| ⓘ Siderite Formula: FeCO3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Galena | 2.CD.10 | PbS |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Unclassified | |||
| ⓘ | 'Ozocerite var. Hatchettite' | - | |
| ⓘ | '' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Siderite | FeCO3 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Millerite | NiS |
| Fe | Iron | |
| Fe | ⓘ Siderite | FeCO3 |
| Ni | Nickel | |
| Ni | ⓘ Millerite | NiS |
| 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
- Glamorgan
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St John's Colliery, Maesteg, Bridgend, Wales, UK