The Shilu Fe-polymetallic ore deposit,a famous hematite-rich Fe-ore deposit,is situated at the western Hainan Province of south China.The deposit characterizes the upper Fe ores and the lower Co-Cu ores,which are mainly hosted within a low-grade to medium-grade,dominantly submarine metamorphosed siliciclastic and carbonate sedimentary succession of the Neoproterozoic Shilu Group.Three facies types of metamorphosed BIFs,i.e.the oxide facies,the silicate-oxide facies and the sulfide-carbonate facies BIFs,are identified within the sixth sequence of the Shilu Group.The oxide facies BIF (i.e.the Fe-rich itabirites or ores) consists of alternating hematite-rich microbands with quartz-rich microbands; the silicate-oxide facies BIF (i.e.the Fe-poor itabirites or ores) comprises alternating millimeter- to a few tens meter-scale,magnetite-hematite-rich bands with calcsilicate-rich (garnet + actinolite + diopside + epidote + quartz) meso- to microbands; and the sulfide-carbonate facies BIF (i.e.the Co-Cu ores) contains alternating macro- to mesobands of Co-bearing pyrite and pyrrhotite,and chalcopyrite with mesobands of dolomite + calcite + diopside + quartz and/or chlorite + sericite + quartz.The blastooolitic,blastopelletoid blastocolloidal and blastopsammitic textures,and blasobedding structures which most likely represent primary sedimentation are often observed in these BIF facies.The interbedded host rocks with the BIFs mainly are the pyroxene-amphibole rocks and the banded or impure dolostones,and also contain banded or laminated structures,and lepido-gra-noblastic,nematoblastic and/or blastoclastic textures.