Ballachulish

Porphyry copper prospect in Scotland, United Kingdom of Great Britain and Northern Ireland

Names and other identifiers

GMRAP ID 3131
Tract name Western European Caledonian (150pCu6007)
Site status prospect

Geographic location

Country United Kingdom of Great Britain and Northern Ireland
State or province Scotland
Geographic location -5.1785, 56.6652
Geologic map unit -5.1785, 56.6652
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range ~490–390 Ma (Caledonian orogeny)
Age reference geologic inference
Minerals chalcopyrite, molybdenite, pyrite, scheelite
Associated rocks adamellite, microadamellite
Tectonic setting continental margin
Stratigraphic age Late Cambrian–Ordovician–Silurian–Middle Devonian

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au, Ag
Minor commodities W
Gold-Moly ratio -9999

Reference information

Comments Sporadic mineralization over an 1800 by 800 m area in adamellite and microadamellite of the Balluchulish igneous complex. Explored by the British Geological Survey in the 1970s by IP, core, and outcrop sampling. Subeconomic. Maximum concentrations in core samples: 264 ppm Cu, 501 ppm Mo; higher grades in selected outcrop samples. No K alteration; well-developed phyllic alteration; no typical porphyry copper zonation; low-grade, low salinity fluid inclusion (that is, atypical of porphyry).
Study area name Europe
References Colman and others (1996); Haslam and Kimball (1981)
Site reference Sutphin and others (2013)
Colman, T.B., Scrivener, R.C., Morris, J.H., Long, C.B., O’Connor, P.J., Stanley, G., and Legg, I.C., comps., 1996, Metallogenic map of Britain and Ireland: British Geological Survey 1:1,500,000 Series, 1 sheet, scale 1:1,500,000.
Haslam, H.W., and Kimbell, G.S., 1981, Disseminated copper-molybdenum mineralization near Ballachulish, Highland region: Institute of Geological Sciences, Mineral Reconnaissance Programme Report 43, 55 p. (Also available at http://nora.nerc.ac.uk/11900/1/WFMR81043.pdf.)