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I'm a junior geologist and I have a few questions concerning the fire assay fusion that labs use to determine Au concentration.
If I have a gold ore associated with Quartz SiO2, since quartz's melting point is around 1700°C and the fire-assay can only go up to 1100°C, doesn't this lead to an incorrect concentration result?
Are the reagents use to increase the Au extraction from its other compounds?
Thank you very much,
Clyde.