Nepheline Syenite

Описание: Mined at Nephton and Blue Mountain north of Havelock, Ontario Canada and hauled out by Canadian Pacific Railway and truck. Long ago by boat and CN

75 percent of production is used in glass manufacturing
15 percent for ceramic
both of which benefit from lower temperatures needed to melt the ingredients
the rest is used as an inert filler in paints, plastics, rubber, and as an abrasive cleaner and sand blasting agent among several other uses.

American Nepheline
Indusmin
Falkenbridge
IMC
Unimin
Silbelco
Covia
some of the names of owners of these plants over the years, Covia being the current one.