Every mineral is different from all other minerals.
You can identify a mineral by its properties:
- Hardness: a mineral is hard when it is difficult to scratch.
- Lustre: lustre means the way a mineral reflects light. Some minerals are very shiny. Others are not shiny.
- Colour: some minerals are always the same colour. Others can be different colours.
- Shape: Some minerals have a regular shape. Others have an irregular shape.
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