A naturally occurring, inorganic solid, that has a crystal system and a definite chemical composition
The way a surface reflects light
A mineral cannot form from materials that were once part of a living thing
A mineral's resistance to scratch
The tendency of a mineral to break along uneven and irregular surfaces
The absorption or lack of absorption of light
The tendency of a mineral to break along flat surfaces
Fluorescent (Fluorite); Reacts to HCL (Calcite); Magnetic (Magnetite); Fools Gold (Pyrite)
Mohs Hardness Scale
Geologists determine a mineral's hardness by comparing it to the minerals on this scale
The color of a mineral in a powdered form
A mineral must be formed by processes that occur in the natural world.
A mineral is always a solid (it has a definite shape and volume)
The repeating pattern of a mineral's particles form a solid called a crystal.
Definite Chemical Composition
A mineral always contains certain elements in definite proportions.