Muséum national d'histoire naturelle _ The species

FROM : Laurium, Greece
SIZE : 10 x 6.5 cm

This adamite displays encrustations with spherical nodules. It is bluish green in color with a vitreous glare. The sample measures 10 x 6.5 cm.

It arises from Laurium in Greece. This sample comes from the Eugene Patrin collection, which was donated in 1899. It is kept today in the storage rooms of the collections of the Muséum national d'Histoire naturelle (i.e., not yet displayed to the public).

Photography: Louis-Dominique Bayle, © MNHN.

SPECIE : Adamite

HISTORY : Species dedicated to French mineralogist Gilbert Joseph Adam (1795-1881)

Species first described in 1866 by Charles Friedel (1832-1899), French chemist and mineralogist

Type-locality: Chañarcillo, Chili
ANCIENT NAME : Adamine

CHEMICAL FORMULA : Zn2 (AsO4) (OH)
CRYSTAL SYSTEM : Orthorhombic
COLOR : Green, yellow, colorless, white, blue, violett, pink
DIAPHANIETY : Transparent to translucent
LUSTER : Vitreous
STREAK : White
MORPHOLOGY : Tabular crystals, prismatic. Sub-millimetric crystals, rarely centimetric, isometric aggregates, massive
HARDNESS : 3,5
DENSITY : 4,435-4,44

CHEMICAL CLASS : VII - Phosphates, arsenat
GROUP : Libethenite
STRUNZ CLASS BEFORE 2001 : 7/B.06-30
STRUNZ CLASS AFTER 2001 : 8.BB.30

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Adamite

Adamite

MNHN N°99.622

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