A) Low maginfication of Fe-rich rim containing fine grained magnetite and Fe-sulfide phases and their association with the surrounding carbonate.
Iron sulfides and magnitite were also found. These minerals are commonly produced by anaerobic bacteria and other microscopic organisms.
A)
Low maginfication of Fe-rich rim containing fine grained magnetite and
Fe-sulfide phases and their association with the surrounding carbonate.
B) High magnication
of a magnetite-rich area in A) showing the distribution of individual magnetite
crystals. C) high magnification of a pyrrhotite-rich region showing the
distribution of individual pyrrhotite particles (two black arrows in the
centre) together with magnetite (other arrows) within fine-grained carbonate.
Courtsey of Science on Line.
