The mine generated shareholder earnings of $ 630 million, or $ 1.10 per share, for the three months ended March 31.
In comparison, it had a profit of $ 759 million, or $ 1.30 per share, for the same period a year earlier.
Revenues totaled nearly $ 3.11 billion, compared to a turnover of $ 3.09 billion last year.
On an adjusted basis, Teck posted a profit of $ 568 million, or 99 cents per share, down from adjusted profit of $ 753 million, or $ 1.29 per share, in the same period a year earlier.
Analysts on average expected a profit of 95 cents per share, according to forecasts collected by Thomson Reuters Eikon.