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Nant yr Helfa Mine, Pantllwini, Llanycil, Gwynedd, Wales, UKi
| Regional Level Types | |
|---|---|
| Nant yr Helfa Mine | Mine |
| Pantllwini | - not defined - |
| Llanycil | Community |
| Gwynedd | County |
| Wales | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
52° 56' 42'' North , 3° 44' 13'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SH833401
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bala | 1,974 (2017) | 10.1km |
| Llan Ffestiniog | 864 (2017) | 13.0km |
| Trawsfynydd | 628 (2017) | 13.3km |
| Blaenau-Ffestiniog | 4,005 (2016) | 14.5km |
| Cerrigydrudion | 289 (2017) | 14.5km |
Other/historical names associated with this locality:
Merionethshire
A small, unsuccessful, manganese mine that appears to have worked intermittently at the end of the 19th and beginning of the 20th centuries. The manganese mineralisation occurs associated with minor N–S vertical faults.
Specimens of botryoidal manganese oxides in the National Museum of Wales Collection are composed largely of hollandite (National Museum of Wales database).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Hollandite Formula: Ba(Mn4+6Mn3+2)O16 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Hollandite | 4.DK.05a | Ba(Mn4+6Mn3+2)O16 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Mn | Manganese | |
| Mn | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Ba | Barium | |
| Ba | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
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
- Snowdonia National ParkNational Park
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