Basic materials stocks declined 0.2% on Wall Street so far on Tuesday. NYSE:DOW, NYSE:DDC, NYSE:NEM, NYSE:ABX, NYSE:EGO, NYSE:SHW, NYSE:WLK, NYSE:IAG, NYSE:LYB, NYSE:HBM, NYSE:CIR, NYSE:SID, NASDAQ:CENX, NYSE:MWA, NASDAQ:RAVN, NASDAQ:GSM, NYSE:WTS, NYSE:SQM, NYSE:GPK, NYSE:AIN