From ZNC's November 2022 ASX release of first diamond core holes...

From ZNC's November 2022 ASX release of first diamond core holes at RIO, lots of +1% intersections within thicker lower grade zones.

"First diamond core assays received from an ongoing drilling campaign at the Rio Pegmatite, Split Rocks Project, have returned significant lithium results over two intervals totalling 49m in thickness.
▪ New lithium drill results from drill hole ZVCD039 (diamond core tail to ZVRC039) include:
o 26m @ 1.2% Li2O incl. 13m @ 1.9% Li2O (upper zone) and23m @ 0.8% Li2O incl. 8m @ 1.3% Li2O (lower zone).
o These new lithium zones are 200m to the south and 200m east of previously reported mineralised holes ZVRC037 & 040.
o Diamond drilling confirms pegmatite continues or repeats (up to 100m in thickness) at depth below many RC drill holes.▪ New results are in addition to those previously reported (ASX Releases 4-Apr-22 and 20-Sep-22), including:
o 20m @ 1.0% Li2O, incl.10m @ 1.7% Li2O within a broader interval of 108m @ 0.4% Li2O
o ZVRC032 - 24m @ 0.7% Li2O, incl. 3m @ 2.7% Li2O & 1m @ 1.5% Li2O within a broader interval of 104m @ 0.3 % Li2O to end of hole
o ZVRC037 - 25m @ 0.7% Li2O, incl. 5m @ 1.1% Li2O & 3m @ 1.1% Li2O & 2m @ 1.2% Li2O within a broader interval of 116m @ 0.3 % Li2O
o ZVRC040 - 12m @ 0.6% Li2O, incl. 4m @ 1.2% Li2O within a broader interval of 88m @ 0.3 % Li2O to end of hole
o ZVRC043 – 7m @ 1.3% Li2O within a broader interval of 56m @ 0.3% Li2O to end of hole
o ZVRC044 – 10m @ 1.0% Li2O within a broader interval of 62m @ 0.3% Li2O