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.sub.1]21 (3T) (28).
Associated minerals are: cryolite, cryolithionite, pachnolite, weberite, thomsenolite, prosopite, ralstonite, and fluorite.
Minerals identified in the pipe are: cryolite, cryolithionite, elpasolite, pachnolite, prosopite, ralstonite, thomsenolite, weberite and a new mineral with the composition [Na.sub.2]LiAI[F.sub.6] that has been named simmonsite.
It also hosts the first occurrence of cryolithionite and simmonsite, and the second known North American occurrence of weberite. Similar mineral assemblages have been reported from pegmatites (e.g., Eureka Tunnel) at St.
Minerals in the younger, secondary stage include: fluorite, pachnolite, prosopite, ralstonite, thomsenolite, and weberite. Replacement of the primary assemblage by the secondary assemblage is also evident.