It bears very close ressemblance to hochelagaite, its Ca-analog and a few other minerals. In the paragenetic sequence in all modes of occurrence, franconite appears to be one of the latest minerals formed.
Color is white to colorless.
Luster is vitreous to silky. Crystal Habits normally as radiating short white capillary crystals from a solid core to 1-2mm. Associated Minerals include aegirine, albite, analcime, calcite, catapleiite, dawsonite, gaidonnayite, microcline, natrolite, pyrite, siderite and sodalite. Distinguishing Features include its fluorescence, which helps in distinguishing it from hochelagaite. St-Michel, Qu bec, Canada.