Tivan (ASX:TVN)has received initial assay results from its regional-scale stream sediment sampling program at the Turiscai project in Timor-Leste, returning grades of up to 434 parts per million copper and 0.801 parts per million gold, according to a Wednesday Australian bourse filing.

The company said anomalous grades of up to 0.2 parts per million silver, 0.62 parts per million bismuth, and 2.60 parts per million selenium were also returned, considered key pathfinder elements associated with porphyry-style deposits.

Stage Two work is underway, focused on prospect-scale exploration at priority target areas identified during Stage One, with initial rock chip assays from Stage Two sampling returning grades of up to 23.1% copper, the filing added.

Collaboration between Tivan, the Autoridade Nacional dos Minerais, and Murak Rai Timor has provided access to new geophysical datasets to support and accelerate Stage Two exploration targeting, it added.