Penrhyn Mine, Llandegai, Gwynedd, Wales, UKi
| Regional Level Types | |
|---|---|
| Penrhyn Mine | Mine |
| Llandegai | Community |
| Gwynedd | County |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
53° 12' 26'' North , 4° 6' 14'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SH595699
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Tregarth | 1,307 (2017) | 2.2km |
| Bangor | 17,988 (2017) | 2.8km |
| Bethesda | 4,735 (2017) | 4.2km |
| Menai Bridge | 4,958 (2017) | 4.9km |
| Beaumaris | 1,370 (2017) | 6.3km |
Mindat Locality ID:
153506
Long-form identifier:
mindat:1:2:153506:1
GUID (UUID V4):
015636b6-2c37-4a20-b134-240751e355ce
Other/historical names associated with this locality:
Caernarvonshire
The largest of the 3 iron mines in the Bangor area, all of which exploited sedimentary deposits precipitated as nodules within a cleaved mudstone, the Nant Ffrancon formation, that occurs widely across this area of north Wales.
First worked on a very limited scale in 1912, Penrhyn Mine was taken over by the Silurian Iron Ore Company, which had interests in a number of the north Wales iron mines (see Ystrad Mine) in 1913. Originally quarried at surface, by 1917, the majority of the 32 man workforce was employed underground, the maximum depth reaching about 126 feet below surface. Surface and underground working then alternated till 1920 and the mine was abandoned in 1921. Maximum production was about 200 tons of ore per week.
Like all of the Gwynedd iron mines, Penryn Mine had a high silica content, which rendered it unattractive to distant ironmasters and which helped contribut to the mine's ultimate failure. It was also contaminated with iron pyrites, which was removed by hand prir to shipping for smelting to, initally, Brymbro and Ruabon in north Wales, and subsequently, Swansea in south Wales.
In 1983, the dumping of material from road construction for the Bangor Bypass oblierated the site remains.
Ref: Caernarvonshire Iron Ore, Jeremy S Wilkinson, British Mining No. 78, Memoirs 2005, Northern Mines Research Society.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK
- Wales
- Cambrian MountainsMountain Range
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