weberite

weberite

[′vā·bə‚rīt]
(mineralogy)
Na2MgAlF7 A light gray, orthorhombic mineral consisting of an aluminofluoride of sodium and magnesium; occurs as grains and masses.
References in periodicals archive ?
For n = 3, the structure is the 3-block trigonal weberite [P3.