The metal touted for its environmental benefits, particularly in the manufacture of lighter cars and trucks, has a big problem with storing its toxic by-products.
Prices of 65% iron-content ore for delivery to China hit a five-year-peak of $110.5 a tonne on Thursday, while its premium to benchmark 62% ore widened to five-month highs.
Specialist materials firm Johnson Matthey forecast a 127,000-ounce platinum shortfall this year, after surpluses of 372,000 and 44,000 ounces in 2018 and 2017 respectively.
A trade war between the United States and China is depressing the price of copper and the red metal would be 5% to 15% higher without the dispute, Jean-Paul Luksic told El Mercurio.
Gold futures in India fell to 31,240 rupees per 10 grams last week, the lowest in more than four months and down 8.2% from a 2019 high of 34,031 rupees hit in February.