Single crystal from a find in spring 2010.The crystal, 2,7 cm tall, is naturally etched however retains a good glassy luster and has lots of internal transparency.Jeremejevite is an uncommon alumino-borate found in some pegmatite environments, only very rarely in large sizes and gem crystals.
Formula :
Al6[(F,OH)3/(BO3)5]
System: hexagonal Hardness:7½ Rarity:rare
Strunz id:V/G.5-30 -
NITRATES, CARBONATES and BORATES
Name origin: After Pavel Vladimirovitch Jeremejev (1830-1899), Russian mineralogist and engineer.
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 Specimen weight:2 gr.
 Crystal size:2,7 cm tall
 Overall size: 6mm x 4 mm x 27 mm
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