fig09.htm

Figure 9. Forms of various mineral phases in the Rainbow ores. Photograph in secondary electrons: a - fine-grained mass of a Cu, Fe, and S composition (dark) in sphalerite (Sample 3982-M1-2/3); b, c - zoned distribution of mineral phases: Cu, Fe, S (dark); Zn, Fe, S, and minor Cu (gray); Zn, Fe, S (light gray) (Sample 3983-M2-2/2); d - zoned pattern of sulfide phases: middle - reticulate isocubanite (dark) surrounded with poor-Fe sphalerite (light gray), the next zone is chalcopyrite (gray) grading indistinctly to more ferrous sphalerite varieties (light gray) (Sample 3982-M1-2/1); e - reticulate exsolution texture of Cu, Fe, S solid solution: intergrowth of isocubanite (gray) and chalcopyrite (white) (Sample 3982-M1-6); f - pyrite streaks (dark gray) in Zn, Fe, S (light gray) and Cu, Fe, S (gray) matrix (Sample 3982-M1-3a); g, h - chalcopyrite segregation masses (white) in isocubanite (gray) (Sample 3982-M1-2/5a).


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