Specific gravity
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- Specific gravity is a ratio of the mass of a material to the mass of an equal volume of water at 4 oC (39 oF).
- Relationship Between Specific Gravity and DensityUnlike density, which has units of mass per volume, specific gravity is a pure number, i.
- Specific gravity is the heaviness of a substance compared to that of water, and it is expressed without units.
- It is often sufficient to note whether a mineral's specific gravity is significantly higher or lower than that of other minerals.
- Specific gravity is found by dividing the density of a given substance by the density of a known substance (usually water) at either 4C (39 F) or 20 C (68 F).
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