Rocks can be sedimentary, metamorphic or

Which of the following is not a characteristic of minerals

• They are pure substances

• They are organic

• They are solid

• They are naturally ocurring

Is this a mineral ?

• Yes

• No

This is a _____________ mineral

• Crystalline

• Amorphous

This is a _____________ mineral

• Crystalline

• Amorphous

Which is not a process of crystallization?

• Distillation

• Precipitation

• Solidification

• Sublimation

Which polimorph of carbon is this?

• Diamond

• Graphene

• Graphite

• Amorphous carbon

When two minerals share the same crystal structure and a similar chemical composition we are talking about

• Isopoda

• Polymorphs

• Twin crystals

• Isomorphs

The property measured here is

• Colour

• Streak

• Transparency

• Lustre

Which one is harder?

• Quartz

• Calcite

• Gypsum

• Apatite