Location: |
Oxclose Mine, South Pennine Orefield, Britain |
Major Minerals: |
Bravoite, sphalerite, galena, pyrite, marcasite |
Minor Minerals: |
Chalcopyrite, nickeliferous pyrite, nickeliferous marcasite |
Trace Minerals: |
Includes covelline |
Textures: |
Euhedral crystals of bravoite, pyrite and chalcopyrite lie along growth zones in fluorite, baryte and calcite. Compositionally zoned bravoite shows changes in morphology (cubes and dodecahedra) and is overgrown by successive rims of nickeliferous pyrite and marcasite, themselves enclosed within pyrite and marcasite. Galena and sphalerite are inclusion-free and often rhythmically interbanded. Sphalerite shows faint colour banding |
References: |
Ixer, 1974; Ixer and Townley, 1979 |