Group of good-sized, interpenetrated, and well-faceted londonite and rhodizite crystals, lustrous and arranged on the matrix. The difference between the two lies in their chemical composition: in londonite, cesium predominates over potassium. This specimen belongs from the first pieces brought from Madagascar in the 1990s and is from a locality situated 25 km S of the type locality for the species. With label #240.

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