PTR Minerals (ASX:PTR), formerly Petratherm, is a titanium explorer in South Australia, according to Acorn Capital. In September 2025, Acorn reported Petratherm fell 13% despite ongoing work to de-risk its titanium project in South Australia, describing it as an advanced titanium explorer progressing its project toward development. PTR Minerals operates in the Materials sector within the Metals and Mining industry, and Thesis Tracker has captured 1 comment from 1 fund manager, Acorn Capital. Headquartered in Adelaide, PTR Minerals explores for titanium, copper and gold in South Australia, with a portfolio including the Muckanippie titanium project in the Gawler Craton, as well as the Woomera, Mabel Creek and Gina copper-gold projects, and is advancing metallurgical and development studies on its titanium-rich heavy mineral deposits, which could supply titanium feedstock to growing aerospace and defence markets.