1891 Manandonite, Antandrokomby pegmatite, Manandona Valley, Sahatsiho Ambohimanjaka, Ambositra, Amoron’i Mania, Madagascar March 8, 2024 Steve Africa Madagascar Spherical aggregates of grey pseudohexagonal tabular manandonite crystals in a cavity in matrix. Type Locality. Ex Richard Bell Collection. Width of view 6mm. Stack of 40 images. Click on the image below for a higher resolution version.