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Minerals
Minerals and Rockas Part 1
Term | Definition |
---|---|
Rock | s any naturally formed solid that is part of Earth or any other celestial object |
Mineral | Naturally occurring inorganic solid with a definite structure and composition where atoms are arranged in a repeating pattern |
Inorganic | Nat made by or composed of living things |
Crystalline | A solid in which the atoms are arranged in a repeating pattern |
Crystallization | A process of organizing atoms to form crystalline solids |
Recrystallization | The cooling and hardening of lava or magma into minerals |
Rearrangement | The realignment of atoms in minerals under high temperature and pressure |
Color | A visual attribute of an object based on perception (one of the most obvious, but not the most reliable, Many of the 4000 known minerals share similar colors) |
Streak | The color of finely crushed power when a mineral is dragged a crossed a streak plate (weathering changes the outside color, but streak gives the true color) |
Luster | The shine of an unweathered mineral or the way it looks in reflected light |
Density | The ratio of mass and volume of an object |
Hardness | Resistence of a mineral to be scratched |
Cleavage | The tendency of a mineral to break a long zones of weakness and form semi-smooth or parallel surfaces |
Fracture | An irregular or uneven break |
Acid Test | When dilute acid (HCI) is placed on a mineral it can bubble (Calcite and Dolomite both react with acid) |