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Brucite

MNHN N°203.209

visu_585 infos

FROM : Abestovskiy, Sverolovsk, Oural, Russia
SIZE : 14 x 9.5 x 6.5 cm

general description

This sample is composed of very pale green brucite crystals. The crystals are prismatic and have a hexagonal outline and a flat termination for some of them and pyramid-shape like for others. The whole specimen measures 14 x 9.5 x 6.5 cm.

The brucite comes from Abestovskiy in Russia. Acquired thanks to support from Total, it is today kept in the storage rooms of the collections of the Muséum national d’Histoire naturelle (i.e., not yet displayed to the public).

Photography: A. Dahmane / Photo Saint-Hilaire, © MNHN.

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The Species page

Identity card

SPECIE : Brucite

HISTORY : Species dedicated to Archibald Bruce (1777-1818), American medical doctor and mineralogist who discovered it

Species described in 1824 by François-Sulpice Beudant, French mineralogist

Type-locality: Castle Point, Hoboken, New Jersey, USA
ANCIENT NAME : Magnésie indigène

CHEMICAL FORMULA : Mg (OH)2
CRYSTAL SYSTEM : Hexagonal
COLOR : White, light green, gray
DIAPHANIETY : Transparent
LUSTER : Waxy
STREAK : White
MORPHOLOGY : Elongated and tabular crystals
HARDNESS : 2,5
DENSITY : 2,368

CHEMICAL CLASS : IV - Oxides, hydroxides
GROUP : Brucite
STRUNZ CLASS BEFORE 2001 : 4/F.03-10
STRUNZ CLASS AFTER 2001 : 4.FE.05

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