Botswana - Orapa Area F Concession, page-14

From  Botswana  Diamonds  PLC,   12  April  2015
PL137/2015 contains mineralogical anomalies with kimberlite indicator minerals, namely
pyropes, ilmenites and in particular chrome diopsides. Chrome diopsides (garnets) are
relatively soft and do not travel far from the kimberlite source and it is, therefore,
considered worthwhile to conduct follow-up exploration of these indicators on this small
licence area.

This  comment  applies  to  the  Gope  Field,  some  80  klms  south  of  Orapa  but  I  reckon
the  comment  holds  true  to  our  Botswana  garnets  as  well......

Links  in  with  your  original  thread  post  referring  to  the  garnet  count  being  one  of  the
main  indicators.