Write the names and formulae of two ores of aluminium.

Explanation

To answer the question about the names and formulae of two ores of aluminium, we can follow these steps:

### Step-by-Step Solution:

1. **Define Ores**: Understand that ores are naturally occurring substances from which metals can be extracted profitably.

2. **Identify Aluminium Ores**: Recognize that there are several ores from which aluminium can be extracted. We need to find two of them.

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