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Earth Science Conservation Review
| Tamney - site of local interest | Londonderry |
| Site number: | 753 | ||
| Locality Type: | Quarry (disused) | Status: | ASSI |
| Grid Reference: | C633032 Centroid | ||
| Google maps: | 54.87296,-7.01395 | ||
| County: | Londonderry | Council area: | Causeway Coast & Glens Borough Council |
| Period: | Precambrian | ||
| Lithostrat: | Dungiven Formation | ||
| Site Description | |
|---|---|
| Highlights: | |
The locality is a small disused limestone quarry in meta-limestones and pelite of the Dungiven Limestone Formation. Minor, stratiform and vein sulphide mineralization occur in the meta-limestone. | |
| Description: | |
The locality is a small disused limestone quarry approximately 25m in length and 5m in height, which is accessed via a farm lane from the Altinure Road between Feeny and Park c.1.5km west of Fincairn crossroads. The quarry contains a steeply dipping bed of meta-limestone c.4m in thickness, which is sandwiched by pelite, within the Dungiven Limestone Formation. Sulphide mineralization at this locality was reported by Arthurs (1976). During a site visit (1997), mineralization comprising mainly pyrite with minor chalcopyrite was observed to occur as (i) stratiform concentrations up to 10cm thick forming at least one bed within the meta-limestone, and (ii) calcite veins 2-5mm in thickness which are prominent along joints within the meta-limestone. In the latter, pyrite occurs as 5-15mm flattened cubic crystals. Coarse calcite also forms a lensoid vein at the tectonised junction between marble and friable mica schist at the eastern side of the quarry. Galena was also reported at the locality (Arthurs, 1976), but none was observed during the field visit. | |
| Importance: | |
The site is important scientifically as it exhibits both stratiform and vein styles of mineralization within the Dungiven Limestone Formation. | |
| Keywords | |
|---|---|
| Minerals: | Calcite, Chalcopyrite, Galena, Pyrite |
| Rocks: | Limestone, Meta-limestone, Pelitic rock, Schist, Marble |
| Structures: | hydrothermal vein, stratiform mineralization |
| Measurements | |||||
|---|---|---|---|---|---|
| Length: | 25m | Width: | Height: | 5m | |
| Depth: | Area: | ||||
| Access | |
|---|---|
| Approach: | This site is located in Tamney townland near Feeny. |
| Record type: | SLNCI Report | ||
| Entered by: | E M Porter | ||
| Last updated: | 09/10/03 | ||
| Enlander, I., Dempster, M. & Doughty, P., 2026. Tamney - site of local interest, County Londonderry, site details. [In] Earth Science Conservation Review. https://www.habitas.org.uk/escr/site.php?item=753. Accessed on 2026-11-08. |
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