The project operator (60%) reported 563.8m at 0.981g/t gold that ended in mineralisation, in a step-out hole 90m north of the Copper Belle zone.
"It is certainly the best result to date at Copper Belle - in terms of grade x length - being some 50% longer than the previous longest intersection," president and CEO Walter Storm said.
He said the new extension would be a prime target for follow-up drilling in 2019.
Tudor had earlier reported visible gold in one of the first two holes drilled at Treaty Creek this year.
American Creek Resources (TSXV: AMK), which holds a free-carried 20% interest along with Teuton Resources (TSXV: TUO) until a production decision, said results indicated the joint venture was "only scratching the surface of highly prospective areas".
"What has been rewarding is that the geology and geophysics, both similar to Seabridge's KSM and Pretium's Snowfield, have been used together to guide the drill to such exceptional results," American Creek CEO Darren Blaney said.
Tudor raised C$861,700 (US$650,000) at 27c per unit in September to advance exploration, for general working capital purposes and repaying existing liabilities.
It had raised $1 million (US$770,000) at 35c per unit in July.
Tudor shares have lifted off a 52-week low of C20c last week but closed down 2.5c to 27.5c to capitalise it at $26.6 million.
