Hardness, Cleavage, Fracture, Tenacity, Special Gravity main content.

Hardness, Cleavage, Fracture, Tenacity, Special Gravity

Part of Hall of Minerals.

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About

The atomic structure of all minerals determines their physical properties.

Exhibition Text

Hardness
Hardness in a mineral means the degree of resistance offered by its smooth surface to being scratched. Minerals having degrees of hardness corresponding to values between 1 and 10 on the Mohs Scale of Hardness are shown to the upper right. The points on the scale are determined by the hardness of these minerals. Any mineral in the sequence will be scratched by a harder mineral.