Which of these is an ore of copper?

Options

A. Galena
B. Bauxite
C. Haematite
D. Chalcocite

Answer

To determine which of the given options is an ore of copper, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Gallenium (Galena)
- Bauxite
- Hematite
- Chalcosite

2. **Understand Each Ore**:
- **Gallenium (Galena)**: This is actually lead sulfide (PbS). It is an ore of lead, not copper.
- **Bauxite**: This is primarily composed of aluminum oxide (Al2O3·2H2O). It is the main ore of aluminum, not copper.
- **Hematite**: This is iron oxide (Fe2O3) and is an important ore of iron, not copper.
- **Chalcosite**: This is copper(I) sulfide (Cu2S). It is a significant ore of copper.

3. **Conclusion**: Among the options provided, **Chalcosite (Cu2S)** is the ore of copper.

4. **Final Answer**: The correct option is **Chalcosite**.