Which is not a mineral of Al?

Options

A. diaspore
B. bauxite
C. corundum
D. galena

Answer

To determine which mineral is not a mineral of aluminum, we need to analyze the given options and identify their compositions.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which of the given minerals does not contain aluminum.

2. **Analyze the Options**:
- **Diaspore**:
- Chemical Formula: α-AlOOH
- Type: Oxide mineral
- Contains aluminum.
- **Bauxite**:
- Chemical Formula: AlO(OH)
- Type: Sedimentary rock
- Contains high aluminum content and is the primary ore for aluminum extraction.
- **Corundum**:
- Chemical Formula: Al₂O₃
- Type: Oxide mineral
- Contains aluminum.
- **Galena**:
- Chemical Formula: PbS
- Type: Sulfide mineral
- Contains lead and does not contain aluminum.

3. **Identify the Non-Aluminum Mineral**:
- From the analysis, we see that Galena (PbS) is the only mineral that does not contain aluminum.

4. **Conclusion**: The mineral that is not a mineral of aluminum is **Galena**.

### Final Answer:
**Galena** is not a mineral of aluminum.

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