crandallite, goyazite, waylandite, wardite, viitaniemiite, morinite, muscovite, lepidolite, and cookeite... and topaz. Among these minerals, wardite, viitaniemiite, morinite, and lacroixite are newly discovered...exchange. However, fluorapatite, morinite, and viitaniemiite crystallized in an F–rich environment. Mont...Keywords: Montebrasite–amblygonite series, Viitaniemiite, Morinite, Wardite, Lacroixite INTRODUCTION...waylandite, wardite [NaAl3(PO4)2(OH)4·2H2O], viitaniemiite [Na(Ca, Mn)Al (PO4)F2(OH)], and morinite [N |