identifying minerals foldable. color (1 st flap) some minerals can come in a variety of colors...

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Identifying Minerals Foldable

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Identifying MineralsIdentifying Minerals

Foldable

Color (1st Flap)Color (1st Flap)

Some minerals can come in a variety of colors (example: quartz)

Not a reliable indicator

Citrine quartz

Amethyst Purple quartz

Rose Pink quartz

Smokey gray quartzClear (or colorless) quartz

Clear/cloudy quartz

Polished smokey quartz

Luster (2nd Flap)Luster (2nd Flap)

The way the surface reflects light

Shiny or dull Pearly or glassy Metallic or Nonmetallic

Metallic

Dull Nonmetallic

Submetallic Shiny Nonmetallic

Dull Nonmetallic Shiny Metallic

Streak (3rd Flap)Streak (3rd Flap)

Color of a mineral in a powder form Rub mineral against a piece of unglazed

porcelain (called a streak plate) More reliable test than color

Streak Plate

Mineral in powder form

Cleavage and Fracture(4th Flap)Cleavage and Fracture(4th Flap)

The way a mineral breaksCleavage=break along smooth, flat surfaces

Fracture=break unevenly, rough, jagged surface

Mica

Conchoidal fracture (curved)

Hardness (5th flap)Hardness (5th flap)

Measure of how easily a mineral can be scratched

To determine the hardness of minerals scientist use the Mohs hardness scale

1-Talc 10-Diamonds

Mohs Hardness ScaleMohs Hardness Scale

Other Properties (6th Flap)Other Properties (6th Flap)

Magnetic

Acid causes fizzing to occur (Chemical reaction)

Taste

Radioactivity/fluorescence

Halite is salty

Fluorescence

UraniumRadioactive

Andersonite

Radioactive