By analyst By Cecilia Jamasmie Aluminum Corp. of China, better known as Chinalco, is said to have approached the Guinean government with a proposal to take over the entire Simandou iron ore project, the world’s largest untapped resource of the steelmaking ingredient. The moves comes about seven months after Rio Tinto (ASX, LON:RIO) agreed to sell to the Chinese company its 46.6% stake in the giant project for up to $1.3bn. The deal gave Chinalco almost 80% of the project, with the Guinean government holding the rest. While the requested parts of the project belong to Guinea, they are at...