They all share the same basic formula (Na2,Ca,Mg)3.5[Al7Si17O48]·32(H2O) by varying the amounts of sodium, magnesium and calcium.

The sodium modifier faujasite-Na was added following the discovery of the magnesium and calcium rich phases in the 1990s.

[4][5] Faujasite occurs in vesicles within basalt and phonolite lava and tuff as an alteration or authigenic mineral.

The ingredients are dissolved in a basic environment such as sodium hydroxide aqueous solution and crystallized at 70 to 300 °C (usually at 100 °C).

After crystallization the faujasite is in its sodium form and must be ion exchanged with ammonium to improve stability.

[9] Faujasite is used above all as a catalyst in fluid catalytic cracking to convert high-boiling fractions of petroleum crude to more valuable gasoline, diesel and other products.

It is also used in the hydrocracking units as a platinum/palladium support to increase aromatic content of reformulated refinery products.

Due to its widely known structure, behaviour and properties, Faujasite is often used as a standard in catalytic and (ad/de)sorption studies on zeolites, along with MFI, FER and CHA[12][13][14][15]