Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by leaching?

Sulphide ores of metals are usually concentrated by froth floatation p

1.	Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by leaching?
A.	Sphalerite
B.	Galena
C.	Argentite
D.	Copper pyrites
Answer» D. Copper pyrites

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Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by leaching?

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