The one that is not a carbonate ore is:

Options

A. bauxite
B. malachite
C. siderite
D. calamine

Explanation

To determine which of the given options is not a carbonate ore, we will analyze each option one by one.

### Step 1: Identify the ores and their chemical formulas

1. **Bauxite**: This is an ore of aluminum. Its chemical formula is typically represented as Al₂O₃·nH₂O, where 'n' can vary. It does not contain carbonate ions (CO₃²⁻).

2. **Malachite**: This is a copper ore. Its chemical formula is CuCO₃·Cu(OH)₂. It contains carbonate ions, making it a carbonate ore.

3. **Cedrite**: This is an iron ore. Its chemical formula is FeCO₃. It also contains carbonate ions, classifying it as a carbonate ore.

4. **Calamine**: This is a zinc ore. Its chemical formula is ZnCO₃. It contains carbonate ions, so it is also a carbonate ore.

### Step 2: Analyze the options

- **Bauxite**: Not a carbonate ore.
- **Malachite**: Carbonate ore.
- **Cedrite**: Carbonate ore.
- **Calamine**: Carbonate ore.

### Step 3: Conclusion

From our analysis, we can conclude that the only ore that is not a carbonate ore is **Bauxite**.

### Final Answer:
The one that is not a carbonate ore is **Bauxite**.

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