SAN FRANCISCO (MarketWatch) -- Metals and materials stocks weighed on Canadian markets Monday as gold and oil prices took a hit. The S&P/TSX Capped Diversified Metals & Mining Index (CA:I:ITTMN 1,089, -20.04, -1.81%) declined 1.9%, and the S&P/TSX Capped Materials Index (CA:I:ITTMT 327.14, -3.96, -1.20%) fell 1.4%. Barrick Gold Corp. (CA:ABX 39.37, -0.27, -0.68%) shares fell 1.2%, Teck Resources Ltd. (CA:TCK.B 41.52, -1.16, -2.72%) shares dropped 2.6%, and Canadian Natural Resources Ltd. (CA:CNQ 76.13, -0.92, -1.19%) shares declined 1%. Gold for June delivery declined 0.4% to $1,132.80 an ounce, and oil for June delivery fell 2.4% to $82.68 a barrel. The benchmark S&P/TSX Composite Index (CA:ISPTX 11,992, -78.27, -0.65%) fell 0.8% to 11,971.1 in recent activity. Similarly, Air Canada (CA:AC.B 2.37, -0.13, -5.20%) shares suffered along with the rest of the airline industry, falling more than 5% as transatlantic air travel remains disrupted by airborne volcanic ash. Health-care stocks were one of the few bright sectors on the TSX. Shares of MDS Inc. (CA:MDS 9.18, +0.13, +1.44%) increased 1%, and CML Healthcare Income Fund (CA:CLC.UN 12.01, +0.37, +3.18%) shares rose 3.2%. The S&P/TSX Capped Diversified Health Care Index (CA:I:ITTHC 38.44, +0.35, +0.92%) rose 0.9% in recent activity.

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