Bertrandite - Golconda pegmatite, Brazil - 6.5 x 5 x 13.5 cm / main crystal: 3.7 cm.

Mineral: Bertrandite
Locality: Golconda pegmatite, Governador Valadares, Vale do Rio Doce, Minas Gerais, Brazil
Dimensions: 6.5 x 5 x 13.5 cm / main crystal: 3.7 cm.

Description: Mass: 73 g MIM number:1899 Two tufts of white, pearlescent and translucent bowtie-shaped bertrandite crystals wreathing the crest (3 crystals) and at the base of a 12.5 cm schorl crystal showing a very sharp upper termination. Photographer: Roberto Appiani Publication: “Mineralogical Record, Sep-Oct-2019”