Notably too, there were also high values found of silver and germanium (Ge), a metal used in microscopes, cameras and as an alloying agent.
Significant Ge values were found up to 63 ppm (g/t) Ge associated with high grade zinc mineralisation, the firm told investors.
Meanwhile, one hole showed a weighted average assay of 38.15% zinc over 16 metres (m), another had 25.12% zinc over 6m and another showed 20.12% zinc over 20m .
"We are very pleased with these drilling results," said Colin Bird, Galileo's chief executive.
"The presence of germanium and silver constitutes potentially valuable by-products and possible revenue.
"Once we have fully modelled the programme data, we will embark on another programme to explore other anomalies in the area using ground geophysics as our guide.
"This ore body shows the potential for significant quantities of high grade willemite zinc mineralisation; a postulated feeder source for this mineralisation could be sulphides and we will be seeking external expert advice to assist to locate this possible source."
More than 1,100 metres (m) of diamond core drilling in 24 holes has been completed at the project to date.
The strike of high-grade mineralisation has been increased by further 30m in the eastern ore body to an estimated 220m in total length west to east, the firm added.
Mineralisation remains open to the east and several other peripheral anomalies remain to be explored.
Last week, the group said it had increased its holding in the project to 85% from 51%.
It comes after it had spent more than US$250,000 on exploration, including geochemical soil sampling, permitting, and evaluation and ongoing drilling.