Name one natural silicate and one synthetic silicate?

Explanation

To answer the question regarding natural and synthetic silicates, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Silicates**:
- Silicates are compounds that contain the silicon-oxygen tetrahedron unit (SiO4) as their basic structural unit. This unit consists of one silicon atom surrounded by four oxygen atoms.

2. **Classification of Silicates**:
...