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Hollyford Mine, Co. Tipperary, Irelandi
Regional Level Types
Hollyford MineMine
Co. Tipperary- not defined -
IrelandCountry

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Latitude & Longitude (WGS84): 52° 38' 1'' North , 8° 6' 40'' West
Latitude & Longitude (decimal): 52.63366,-8.11116
GeoHash:G#: gc65rmttk
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Cappawhite369 (2017)6.8km
Dundrum220 (2013)9.4km
Doon509 (2017)9.6km
Reardnogy176 (2017)10.3km
Donaskeagh147 (2017)12.6km


Coordinates are approximate.

Abandoned copper mine 9 kilometres NNE of Tipperary, in operation periodically between 1837 and 1862. The Mining Company of Ireland controlled operations from 1837 to 1839 but owing to problems with water mining was suspended and the lease was eventually cancelled in 1840.
The mine was reopened under private hands and was worked more or less continuously from the mid-1840s until 1862 when low copper prices forced closure.

The host rock in the mine was described by Wynne (1860) as “hard grits and hard splintery shales”. Three mineralized lodes or veins occur in the area and all were mined to some degree. Two veins trend north-northwest and are linked by a crossvein trending roughly east-west. The Ballycohen vein in the east was apparently the earliest worked; the Hollyford vein in the west was the one on which most mining was carried out in the mid-19th century. Workings on this vein reached 90 fathoms (165m). The Hollyford vein is described as a near-vertical vein ranging from 0.15 to almost 2m in width.
Several original mine features still remain on the site. Of the two chimneys, one remains standing but is showing signs of instability. Only the base of the other chimney survives, covered in moss and surrounded by trees and shrubs. There is no obvious trace of most of the eight shafts that are marked on old maps. However, the main shaft, close to the chimney, is still visible but blocked at a depth of 2m below the surface. Local people have indicated that most shafts are merely covered over and not properly sealed. The mine manager’s house and adjacent mine buildings have been restored as a dwelling. The field in which the chimney stands is used as pasture for cattle.

The possibility of reopening the mine was raised in the Dail in 1956, however, the Minister at the time stated he would only support its reopening as a private business venture.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
British IslesGroup of Islands
Ireland (island)Island

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Tennantite
Formula: Cu6[Cu4(Fe,Zn)2]As4S13
Reference: Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp. 267-274.
Tyrolite
Formula: Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Description: Radiating groups (2-3 mm) and crusts of bladed crystals with tetrahedrite, from old dumps. Specimens in BM(NH), collected by A. Russell in 1946 and 1954.
Reference: Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp. 267-274.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Tennantite2.GB.05Cu6[Cu4(Fe,Zn)2]As4S13
Group 8 - Phosphates, Arsenates and Vanadates
Tyrolite8.DM.10Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O

List of minerals arranged by Dana 8th Edition classification

Group 3 - SULFOSALTS
3 <ø < 4
Tennantite3.3.6.2Cu6[Cu4(Fe,Zn)2]As4S13
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq·xH2O
Tyrolite42.4.3.1Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O

List of minerals for each chemical element

HHydrogen
H TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
CCarbon
C TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
OOxygen
O TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
SSulfur
S TennantiteCu6[Cu4(Fe,Zn)2]As4S13
CaCalcium
Ca TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
CuCopper
Cu TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Cu TennantiteCu6[Cu4(Fe,Zn)2]As4S13
AsArsenic
As TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
As TennantiteCu6[Cu4(Fe,Zn)2]As4S13

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Early Carboniferous
323.2 - 358.9 Ma



ID: 3192030
Paleozoic sedimentary rocks

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Silurian
419.2 - 443.8 Ma



ID: 3150208
marine molasse

Age: Silurian (419.2 - 443.8 Ma)

Lithology: Sandstone

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ryback, G., Nawaz, R., and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, 52(365), 267-274.

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