Specific Gravity of Minerals

Mass Dry Divided By The Loss Of Mass In Water

Calcite Massed In Air Galena Massed In Air Sulfur Massed In Air
Calcite Massed In Water   Sulfur Massed In Water
To Find Specific Gravity 

Divide the Mass in Air

By The Mass Lost in Water

 Non-Metal  Calcite = 2.7   Metal  Chalcopyrite = 4.2 Non-Metal   Sulfur = 2.1
Metal   Galena = 7.5  
How can a liquid with SG of 5.1

Be used to distinguish Pyrite  SG 5.0 

from Magnetite SG 5.2?

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Non-Metals Have SG Below 3

 Metals Have SG Above 3

Halite can not be tested

in this way!  Why?

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