Crystal chemistry of levynes

✍ Scribed by E. Galli; R. Rinaldi; C. Modena

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 340 KB
• Volume: 1
• Category: Article
• ISSN: 0144-2449
• DOI: 10.1016/s0144-2449(81)80005-x

✦ Synopsis

A representative series of levyne samples shows a remarkably homogeneous chemical composition revealed by electron microprobe and thermogravimetric analyses (t.g.a.). The lattice parameters, accurately determined by X-ray powder diffractornetry and refined by least squares treatment, have weak correlations with selected chemical parameters in accord with their very limited range of variation (average values with e.s.d.,a = 1.335(3) nm, c = 2.289(12) nm). The fairly constant chemical and physical parameters of levyne are a distinguishing feature of this zeolite family and may testify to its narrow range of crystallization conditions. Levyne is often intimately associated with erionite and/or offretite, possibly in response to the changes of equilibrium conditions.