The mineral that can easily be scratched by a fingernail is talc.
This mineral also has a greasy feel. The color it possesses is usually white, gray or colorless. It is translucent in color and on the hardness scale it possesses a hardness of just 1.
It is used for the making of powders, lubricants also, paint, paper, roofing sheets and also used for the polishing of food such as rice.
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