Herzogenhugel

Porphyry copper deposit in Wallonne, Belgium

Names and other identifiers

GMRAP ID 344
Alternate names La Helle
Tract name Western European Caledonian (150pCu6007)
Site status deposit

Geographic location

Country Belgium
State or province Wallonne
Geographic location 5.912, 50.304
Geologic map unit 5.912, 50.304
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range Paleozoic
Age reference Singer and others (2008)
Minerals albite, biotite, chalcocite/digenite, chalcopyrite, chlorite, cobaltite/gersdorffite, covellite, epidote, galena, magnetite, marcasite, molybdenite, pyrite, pyrrhotite, rutile, scheelite, sericite, sphalerite, hessite, ilmenite, tetradymite, titanite
Associated rocks monzodiorite, tonalite, tonalite porphyry, phyllite, quartzite, sandstone
Tectonic setting continental margin
Stratigraphic age Paleozoic

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Mo
Tonnage (Mt) 20Mt
Cu grade (%) 0.17%
Mo grade (%) 0.02%
Contained copper 34,000t
Gold-Moly ratio -9999

Reference information

Comments Monzodiorite to tonalite intrusion is sill-like with an associated stockwork that consists of quartz veins enriched with chalcopyrite and molybdenite. Drilling indicates that copper and molybdenum grades vary widely, but generally trend higher close to contacts with the intrusion where quartz veins are more abundant (Dejonghe, 1989).
Study area name Europe
References Dejonghe (1986); Van Wambeke (1955a); Van Wambeke (1955b); Weis and others (1980); Singer and others (2008)
Site reference Sutphin and others (2013)
Dejonghe, L., 1986, Belgium, in Dunning, F. W., and Evans, A.M., eds., Mineral deposits of Europe, v. 2, Central Europe: Institution of Mining and Metallurgy, London, p. 99–112.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.
Van Wambeke, L., 1955a, Composition des tonalites de la Helle et de la Lammersdorf et leurs relations avec les autres: Bulletin de la Société Belge de Geologie, v. 64, p. 477–509.
Van Wambeke, L., 1955b, La minéralisation et chimiques des tonalites de la Helle et de la Lammersdorf et leurs relations avec les autres minéralisation: Bulletin de la Société Belge de Geologie, v. 64, p. 534–581.
Weis, D., De Jonghe, L., and Herbosch, A., 1980, Les associations des minéraux opaques et semi-opaques de la roche ignée de la Helle: Annales de la Société Géologique de Belgique, v. 103, p. 15–24.