Ann: Quarterly Activities/Appendix 5B Cash Flow Report, page-29

A cluster of VMS deposits is multiple VMS deposits separated by sufficient distance they clearly developed at different 'exhalative' hydrothermal centres. They may have formed similar time, along the same lithological horizon or not. KGL's Reward group of VMS deposits is a good example of VMS cluster (below at same scale with Antler)

Within each VMS deposit there are often multiple lodes or shoots. Again, either formed contemporaneously (as were Antler Nth and Sth shoots imo), or 'stacked lodes' formed over time at the same location in younger sediments (eg Antler footwall and hanging wall lodes). KGL's Reward deposit (one of a 3-4 deposit cluster) comprises multiple lodes/shoots but being spatially close and treated as a single deposit.