An example of halide ore is

Options

A. Cassiterite
B. Anglesite
C. Siderite
D. Carnallite

Explanation

**Step-by-Step Solution:**

1. **Understanding the Types of Ores**:
- Ores can be classified into different categories based on the type of compounds they contain. Common types include oxide ores, sulphate ores, carbonate ores, and halide ores.

2. **Identifying the Given Options**:
- The question provides several examples of ores:
- Cassiterite (SnO2) - an oxide ore of tin.
- Anglicite (PbSO4) - a sulphate ore of lead.
- Siderite (FeCO3) - a carbonate ore of iron.
- Carnelite (KCl·MgCl2·6H2O) - a halide ore of magnesium.

3. **Analyzing Each Ore**:
- **Cassiterite**: Contains tin and is classified as an oxide ore (not a halide).
- **Anglicite**: Contains lead and is classified as a sulphate ore (not a halide).
- **Siderite**: Contains iron and is classified as a carbonate ore (not a halide).
- **Carnelite**: Contains magnesium and is classified as a halide ore due to the presence of chlorine (Cl) in its formula.

4. **Conclusion**:
- The only halide ore among the options provided is Carnelite, which has the formula KCl·MgCl2·6H2O.

5. **Final Answer**:
- An example of a halide ore is **Carnelite**.

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