Min. [Named in 1873, after Prof. Kjerulf, a Norwegian mineralogist.] A variety of Wagnerite, occurring in large crystals and cleavable masses; found at Bamle in Norway.
1875. Watts, Dict. Chem., VII. 715. Kjerulfin differs from wagnerite, which it resembles in many respects, by containing less fluorine and sodium, and more calcium.
