Minerals identify

Know how to recognize them

Gonnardite

Tectosilicate

Gonnardite is a comparatively rare, fibrous zeolite , natrolite subgroup. Older papers claim that a complete solid solution exists between tetranatrolite and gonnardite, but tetranatrolite was discredited as a separate species in 1999. A series, based on the disorder of the silicon-aluminum in the framework, appears to exist between Na-rich gonnardite and natrolite, Na2(Si3Al2)O10·2H2O.

Gonnardite was named in 1896 after Ferdinand Pierre Joseph Gonnard (1833–1923), who was Professor of Mining Engineering at the University of Lyon, France.

Identification

Color of mineral

White
Yellow
Pink
Orange

Mohs scale ( mineral hardness )

4

Density ( specific gravity )

1.514
1.515
1.52

Luster ( interacts light )

Dull
Silky
Vitreous

Crystal ( diaphaneity )

Tetragonal