Composition of malachite mineral is

Options

A. `CuCO_(3).CuO`
B. `Cu(HCO_(3))_(2).Cu(OH)_(2)`
C. `2CuCO_(3).Cu(OH)_(2)`
D. `CuCO_(3).Cu(OH)_(2)`

Answer

### Step-by-Step Text Solution:

1. **Identify the Mineral**: The question asks for the composition of the mineral malachite.

2. **Recognize the Type of Mineral**: Malachite is known to be an ore of copper. This is an important characteristic that helps us understand its composition.

3. **Determine the Chemical Formula**: The chemical formula for malachite is CuCO3.Cu(OH)2. This indicates that malachite consists of copper carbonate and copper hydroxide.

4. **Write the Composition**: Based on the chemical formula, we can summarize that the composition of malachite is:
- Copper (Cu)
- Carbonate (CO3)
- Hydroxide (OH)

5. **Final Answer**: Therefore, the composition of malachite mineral is CuCO3.Cu(OH)2, which can also be referred to as copper carbonate hydroxide.