Mineral properties

Kva slags eigenskap kan ein bruke for å skille mineral frå kvarandre?

* density (tettleik)
* hardness (hardleik)
* cleavage (kløyv)
* luster (glans)
* colour (farge)
* streak (strek)
* magnetism (magnetisme)

Forklar density (tetleik )

Related to the structure or to the composition of the mineral

Forkalar hardness

Related mainly to the strukture of the mineral

Forklar cleavage

Splitting of crystals along crystallographic planes. These planes may or may not represent crystal faces

Forklar luster

Reflection/ transmission of light

diamond, vitreous, greasy, perly, silky

Forklar streak

Colour of the fine mineral powder

Kva er poly chromatic

Light made of a combination of several wavelengths

Kva er inteference?

A combination of several wavelenghts, which are in the eye interpereted as one colour