Revenue from concentrate sales declined by nearly A$1 million quarter on quarter to $16.3 million, despite zinc, lead and copper concentrate production being up 24%, 33% and 26% respectively.
Still, earnings of $1.3 million were a $1.7 million turnaround on EBITDA in the June quarter.
Cash at the end of September totalled $17.4 million (plus $8.8 million of cash-backed security bond deposits and an undrawn working capital facility of US$10 million), versus A$20.2 million cash at the end of June.
The reduction in cash came despite broadly similar expenditure levels on capital and exploration.
The Thalanga plant processed 98,000 tonnes grading 0.3% copper, 2.2% lead, 4.3% zinc, 0.1 grams per tonne gold, and 30gpt silver.
The cash cost of payable zinc metal was US70c per pound, a 25% reduction on the June quarter.
Shares in Red River were up 2.6% to A19.5c in morning trade, capitalising the company at $95.5 million.