The company said it was the first drill programme made possible in nearly 20 years at Warintza, where the Equinox Gold spin-out is aiming to expand the Warintza Central zone, discovered by the late David Lowell in 2000.
The first hole returned 567m from 1m, grading 0.8% copper, 0.04% molybdenum and 0.1g/t gold.
Solaris said it was the first deep hole drilled at Warintza, where past drilling had averaged less than 200m.
President and CEO Daniel Earle said the drilling was made possible through a strategic alliance with the Warints and Yawi indigenous communities.
"With this result, we have begun to write a fitting epilogue to David Lowell's legendary career," Earle said.
Warintza Central has an inferred 124 million tonne resource grading 0.7% Cu-eq.
Solaris said it would begin an advanced airborne geophysical survey next week and anticipated more drilling results by early September from its ongoing 40,000m programme.
The company (TSXV: SLS) debuted on the TSX Venture Exchange in mid-July, with more than C$25 million cash on hand.
It's backed by the Augusta Group, Equinox, Richard Warke, Lukas Lundin and Ross Beaty.
Its shares have almost doubled, from $1.38 on July 14 to peak at $2.62 intraday.
They closed up 38% to $2.43 to value the explorer about $215 million (US$161 million).