RE:RE:RE:RE:RE:RE:RE:RE:calculation
don't you know meta-taconites?
"Southern Labrador Trough The Labrador Trough has three different types of iron ore. The southern Fermont Holdings in Quebec are where Champion has focused its current efforts, more specifically in Fire Lake North.This area hosts a coarser-grained meta-taconite. This coarser grain size requires only 10 percent of the energy needed to liberate the iron compared to the finer-grain size of taconite ore located in the northern portion of the trough. Additionally, the coarser the ore is, the softer it is and the faster it goes through the autogenous grinding mill that grinds and liberates the iron. “When you’re dealing with 23 million tonnes a year and you have 10 percent of the energy cost, it makes a significant difference,” Hussey notes."
and from CHMs website:
"The metamorphism was responsible for recrystallization of the primary iron formation, producing coarse sugary quartz, magnetite, and specular hematite schists (meta-taconites). The coarse grained nature of the meta-taconites is advantageous when producing concentrate as it facilitates the separation of the iron from the gangue minerals. These rich iron formation units are the primary exploration targets on all of Champion's FIOD properties."