Tertiary Minerals is trading 10.34% up at £0.08, with the move attributed to stronger materials stocks and higher precious-metals prices. - Materials stocks rose 1.51%, providing sector context rather than a confirmed company-specific catalyst. - The RNS page lists no announcement dated September 25 or September 28; its latest listed release is the proposed fundraise dated September 21. - Recent drilling news may be background, but available evidence does not establish it as the cause.