Home > Type Localities – March 17 > MS1548 Weloganite


Weloganite is a sodium strontium zirconium carbonate. Weloganite has triclinic symmetry (Chen & Chao, 1975; Grice & Perrault, 1975) although it twins in manner giving (pseudo-)trigonal morphology. Sabina et al. (1968) named the mineral after William E. Logan (1798-1875), first director of the Canadian Geological Survey.

Weloganite here forms a loose single crystal. At the atomic level, it is actually twinned to show pseudo-trigonal symmetry. The mineral has a basal cleavage; only one crystal tip is present. Nevertheless, the single crystal is more than 90% complete. A competition quality thumbnail.

Price: $150

Item code: MS1548

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