Which of the following is an ore of zinc?

Options

A. Calamine
B. Galena
C. Siderite all these
D. all these

Explanation

To determine which of the following is an ore of zinc, we first need to understand what an ore is. An ore is a naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.

### Step-by-Step Solution:

1. **Identify Common Ores of Zinc**:
- The most common ores of zinc are sphalerite (ZnS), which is zinc sulfide, and smithsonite (ZnCO3), which is zinc carbonate.

2. **List the Options**:
- If options were provided (e.g., sphalerite, galena, hematite, etc.), we would need to analyze each one to see if it contains zinc.

3. **Analyze Each Option**:
- **Sphalerite (ZnS)**: This is a primary ore of zinc.
- **Galena (PbS)**: This is an ore of lead, not zinc.
- **Hematite (Fe2O3)**: This is an ore of iron, not zinc.
- **Smithsonite (ZnCO3)**: This is also an ore of zinc.

4. **Select the Correct Option**:
- Based on the analysis, the correct answers would be sphalerite and smithsonite if they were among the options.

### Conclusion:
The ores of zinc include sphalerite and smithsonite. If these were among the options provided, they would be the correct answers.

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