What type of building blocks are present in the structure of zeolites? What is this structure called? ,

Explanation

**Step-by-Step Solution:**

1. **Identify the Building Blocks of Zeolites:**
- Zeolites are crystalline aluminosilicates that have a unique structure. The primary building blocks present in the structure of zeolites are known as truncated octahedra.

2. **Describe the Structure of the Truncated Octahedron:**
- A truncated octahedron is a polyhedron with 14 faces: 8 of these faces are regular hexagons, and 6 are squares. This combination of faces gives the structure its unique geometric shape.

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