Mineral: Bertrandite on Orthoclase
Locality: Golconda pegmatite, Governador Valadares, Vale do Rio Doce, Minas Gerais, Brazil
Dimensions: 9 x 8 x 21 cm / main crystal: 4.1 cm

Description: Mass: 559 g MIM number:1900 An elongated white-cream orthoclase matrix studded on all sides with several white, pearlescent and translucent bertrandite bowtie-shaped crystals. One of the groups of bertrandite crystals, particularly well formed of thicker than average blades, resembles a half-closed book measuring 3.9 cm. This specimen seems to be a floater. Photographer: Roberto Appiani

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