Complex multi stage mineralization processes in the giant
Sep 09, 2021 Sep 09, 2021 In the Bayan Obo mining area, vein ore cuts through ore-bearing dolomite, disseminated ore, banded ore and massive ore (App. Fig. A2b, c, g). Pyrite Re-Os and biotite Rb-Sr dating indicate that this mineralization event occurred at about 440 Ma ( Zhang et al., 2003 , Liu et al., 2004 , Hu et al., 2009 ).