The development of high-fidelity lunar regolith simulants is essential for ground-based testing of technologies intended for in situ resource utilization (ISRU), robotics, and surface operations on the Moon. A key feature of lunar soil, particularly its agglutinate fraction, is the presence of nanophase metallic iron (npFe0), which forms through micrometeoroid impacts and solar wind exposure. These ultrafine particles (<50 nm), incorporated into agglutinated glass, profoundly influence the optical, magnetic and electrostatic behaviour of lunar dust. However, widely used terrestrial simulants such as JSC-1A, LMS-1, LHS-1 and EAC-1A lack this component, limiting their effective use for experiments aimed at verifying the effect of electromagnetic properties on instrumentation used for space missions. Furthermore, the fine grain size of lunar dust and the presence of npFe0 clusters pose significant health risks to astronauts due to its toxicity and high reactivity. Therefore, the chapter emphasizes the need to develop synthesis strategies for the preparation of this agglutinate fraction. In this scenario, special attention is given to the emerging strategy of using zeolitic materials, both natural and commercial, as precursors for nanocomposites containing embedded npFe0 and possessing suitable physicochemical properties to resemble moon agglutinate. These aluminosilicate frameworks offer high cation-exchange capacity and structural porosity, allowing efficient Fe2+ loading and subsequent thermal reduction to npFe0 under controlled conditions. This approach with its intrinsic flexibility not only enhances the compositional realism of simulants but also allows tuning of iron content, grain size, and magnetic response.