Minerals

Colour is the most useful property in a mineral.

• True

• False

A mineral's colour can be changed by the ____________________ found in the mineral.

• lustre

• shininess

• impurities

Some examples of colours in a mineral are...

• violet

• red azure

• cobalt

• all of these are examples of colours

Lustre is the way ____________ is reflected on a newly exposed surface.

• sound

• waves

• light

Pyrite, galena and magnetite are all examples of minerals with metallic lustre.

• True

• False

Lustre can be described as metallic or ______________.

• shiny

• dull

• non-metallic

Streak is the colour of a mineral in solid form.

• True

• False

________________ streaks show up best on a white streak plate.

• pink

• purple

• green

• black

All minerals have a streak that is the same colour as the mineral itself.

• True

• False

A transparent mineral means that _________________.

• all light can pass through

• some light can pass through

• no light can pass through