Location:

Quartz-sulphide veins associated with granites. Jersey,Channel Islands, Britain

The three granite outcrops on Jersey contain minor crosscutting quartz-sulphide veining.

Major Minerals:

Molybdenite, sphalerite, chalcopyrite, pyrite

Minor Minerals:

Galena, pyrrhotite, arsenopyrite

Trace Minerals:

Include stannite group minerals, tetrahedrite group minerals, bournonite, native antimony

Textures:

Sphalerite stars have exsolved from chalcopyrite. Sphalerite has suffered from chalcopyrite disease. Oriented tetrahedrite and stannite group minerals are present in sphalerite; the latter is due to exsolution. Alteration of pyrrhotite to bird's-eye intergrowths of pyrite and marcasite is extensive

Reference:

Ixer, 1980