Which of the following is not a mineral of aluminum

Options

A. Corundum
B. Anhydrite
C. Diaspore
D. Bauxite

Answer

To determine which of the following is not a mineral of aluminum, we need to analyze the given options based on their chemical formulas.

### Step-by-Step Solution:

1. **Identify the minerals and their formulas:**
- **Corundum:** The formula is Al₂O₃.
- **Anhydrite:** The formula is CaSO₄.
- **Diaspore:** The formula is α-AlO(OH).
- **Bauxite:** The formula is Al₂O₃·H₂O.

2. **Check for the presence of aluminum in each mineral:**
- **Corundum (Al₂O₃):** Contains aluminum (Al).
- **Anhydrite (CaSO₄):** Does not contain aluminum (only calcium, sulfur, and oxygen).
- **Diaspore (α-AlO(OH)):** Contains aluminum (Al).
- **Bauxite (Al₂O₃·H₂O):** Contains aluminum (Al).

3. **Determine which mineral does not contain aluminum:**
- From the analysis, we see that Anhydrite (CaSO₄) is the only mineral that does not contain aluminum.

4. **Conclusion:**
- Therefore, the mineral that is not a mineral of aluminum is **Anhydrite**.

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

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