Location: |
Seathwaite Tarn, English Lake District, Britain |
Major Minerals: |
Digenite, djurleite, bornite, haematite |
Minor Minerals: |
Wittichenite, chalcopyrite, blaubleibender covelline, covelline |
Trace Minerals: |
Include arsenopyrite, cobaltite, pyrite, native gold |
Textures: |
Minor arsenopyrite, pyrite and early haematite are euhedral and replaced by digenite and djurleite. Digenite is replaced along cleavage and fractures by covelline, secondary haematite and wittichenite. Djurleite and digenite are replaced along grain boundaries by bornite, wittichenite and secondary haematite. Bornite, wittichenite and digenite form graphic intergrowths. Bornite is replaced by chalcopyrite and covelline |
Reference: |
Stanley and Criddle, 1979 |