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Minerals By Liz Doro


Biotite mica  lustre:non-metallic  Cleavage  Color:

or fracture? Cleavage

black to dark brown

 Hardness:

softer than a fingernail


calcite  Lustre:

non-metallic

 Cleavage

or fracture? Cleavage

 Color:white  Streak

color: white

 Hardness:

softer than glass but harder than a fingernail.


Feldspar  Lustre:

non-metallic

 Cleavage  Colour:  Streak

or fracture? Cleavage

varied

color: colorless

 Hardness:

harder than glass


Fluorite  Lustre:

non-metallic

 Cleavage

or fracture? Cleavage

 Color:

a variation of purple

 Streak

color: colorless

 hardness:

softer than glass but harder than a fingernail.


Galena  lustre:

metallic

 Cleavage

or fracture? Cleavage

 Color:

gray

 Streak

color: gray to black

 Hardness:

softness of a fingernail.


Graphite  Lustre:

metallic

 Cleavage

or fracture? Cleavage

 Color:

black to gray

 Streak

color: black to gray

 Hardness:

softer than a fingernail


gypsum  Lustre:

non-metallic

 Cleavage

or fracture? Cleavage

 Color:

colorless

 Streak

color: white

 Hardness:

softer than a fingernail.


Halite  Lustre:

non-metallic

 Cleavage

or fracture: cleavage

 Color:

colorless

 Streak

color: colorless

 Hardness:

softness of a fingernail.


Hematite  Lustre:

metallic

 Cleavage

or fracture? Fracture

 Color:

dark silver or red

 Streak

color: red, gray

 Hardness:

harder than glass


Magnetite  Lustre:

metallic

 Cleavage

or fracture? Fracture

 Color:

black

 Streak

color: black

 Hardness:

harder than glass


Muscovite mica  Lustre:

non-metallic

 Cleavage

or fracture? Cleavage

 Color:

white

 Streak

color: white

 Hardness:

softness of a fingernail.


Pyrite  Lustre:

metallic

 Cleavage

or fracture? Fracture

 Color:

brassy gold

 Streak

color: greenish black

 Hardness:

harder than glass


Quartz  Lustre:

non-metallic

 Cleavage

or fracture? Fracture

 Color:

colorless

 Streak

color: colorless

 Hardness:

harder than glass


Sulfur  Lustre:

non-metallic

 Cleavage

or fracture? Fracture

 Color:

yellow

 Streak

color: yellow to white

 Hardness:

softer than a fingernail.


Talc  Lustre:

non-metallic

 Cleavage

or fracture? Cleavage

 Color:

white or greenish

 Streak

color: white

 Hardness:

softer than a fingernail.


Minerals pptxbylizdoro