Goldcorp posts loss on lower margins, higher tax

[caption id="attachment_823780" align="aligncenter" width="600"] Miners inside the Eureka vein at Cerro Negro gold and silver mine in Argentina's Santa Cruz province. (Image courtesy of Goldcorp via Flickr)[/caption] Canada’s Goldcorp (TSE:G), (NYSE:GG), the world's biggest bullion producer by market value, logged...