Behierite

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This rare earth Borate is the Tantalum analogue of Schiavinatoite. This is a remarkable example of this incredibly rare species. It features a few small, sharp, well formed, brownish colored pseudo-octahedra of Behierite on pegmatite matrix. There are very few rare earth Borates in the mineral world. 3.8 x 3.3 x 2.6cm