NaMg3Al6BO33Si6O18OH4

NaMg3Al6BO33Si6O18OH4 is a complex aluminosilicate borosilicate formula that includes sodium, magnesium, aluminum, boron, silicon, oxygen and hydroxide. The composition implies a highly aluminous, boron-rich framework in which tetrahedral units of silicon, aluminum and boron connect to form a three-dimensional network, with Na+ and Mg2+ ions acting as charge-balancing cations in framework-related cavities.

In analyses of such compositions, boron can occupy different coordination states (for example in BO3 or BO4 units), which affects local charge distribution and the overall balance with the cations. The explicit formula, as written, does not readily reveal a unique, unambiguous charge-neutral depiction without specifying the precise boron coordination and hydrogen placement. Nevertheless, the arrangement is typically envisioned as a framework of [SiO4] and [AlO4] tetrahedra, with boron units integrated into the network and hydroxide groups contributing to hydrogen bonding and potential structural stabilization.

Occurrence and naming for this exact composition are not widely documented in major mineral databases or literature as a recognized mineral species. It is likely to be hypothetical or synthetic, arising in contexts such as hydrothermal or high-temperature synthesis studies that explore borosilicate/aluminosilicate frameworks rather than a naturally occurring mineral with a conventional name.

Potential applications of such complex borosilicate frameworks include catalysis, ion exchange, or niche materials research, where the interplay of boron content, aluminum distribution and framework hydrogens can influence properties. Further crystallographic data would be required to establish a definitive structure, classification, and properties for NaMg3Al6BO33Si6O18OH4.