Properties minerals

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CHEMICAL PROPERTIES

Solublity

Is the ability of a mineral to dissolve in water and producehomogeneus mixture or solution.

Reactivity with acids

ome minerals react chemically with acidic subtances producing, among other products, carbon dioxide (CO2).

PHYSICALS PROPERTIES

ELECTRICAL CONDUCTIVITY

Is the ability of a minerals to conduct electric current. Some minerals are better conductors than others, whereas sime insulating mienrals do not conduct electrical current at all.

MAGNETISM

Is the ability of certain minerals to behave like a magnet. Magnetic minerals are attracted by other magnets, but they also attract metals such as iron and nickel.

MECHANICAL PROPERTIES

CLEAVAGE

Is the property of a mineral to break into regularly-shaped fragments with flat surfaces.

ELASTICITY

Is the ability of a mineral to deform without breaking when a force is exerted on it, but recover its original shape when the force is no longer exerted.

PLASTICITY

Is the ability of a mineral to be molded into other shapes without breaking when a force is ecerted on it. When the force is no longer applied, this mineral retains the new shape.

BRITTLENESS

Is the ability of a mineral to break without deforming significantly.

HARDNESS

Is the resistance of a mineral to scratching. This property is measured according to the Mohs scale, which is made up of a set of 10 minerals listed in increasing order of hardness.

OPTICAL PROPERTIES

TRANSPARENCY

Is the ability of a mineral to let light through it. Only trasparent minerals allow us to distinguish the shape of objects behind them.

BIREFRINGENCE

Is the property of a material os splitting a ray of light into two rays as it passes through. thus, a double image is creates when we look through a birefringent mineral.

FLUORESCENSE

Is a propertie of a mineral in wich light is given of upon exposure to ultraviolet light.

LUSTER

Indicates how much the superfice of a mineral can reflect light.

COLOR

Can vary across the same type of mineral, on account of impurities. This is why color alone is not a very useful property for distinguishing minerals.

Properties