gonnardite
Sign in to saveGonnardite 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.
Key facts
- Mineral.name
- Gonnardite
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Zeolite group, natrolite subgroup
- Mineral.image
- gonnardite.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Gonnardite from the Bundoora Quarry, Victoria, Australia. Specimen size 4.9 cm
- Mineral.formula
- (Na,Ca)2(Si,Al)5O10·3H2O
- Mineral.IMAsymbol
- Gon
- Mineral.strunz
- 9.GA.05 (10 ed) 8/J.21-40 (8 ed)
- Mineral.dana
- 77.1.5.7
- Mineral.system
- Tetragonal
- Mineral.class
- Scalenohedral (2m) H-M symbol: ( 2m)
- Mineral.symmetry
- I2d
- Mineral.unit cell
- a = 13.38 c = 6.66 [Å]; Z = 2
- Mineral.color
- Colorless, white, yellow or pink to salmon orange
- Mineral.habit
- Radiating fibrous; massive
- Mineral.mohs
- 4 to 5
- Mineral.luster
- Vitreous to silky or dull
via Wikipedia infobox
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Encyclopedic overview
5 sectionsContents
- Crystallography
- Crystal habit
- Structure
- Environment
- References
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.
Excerpted from Wikipedia’s “gonnardite” article, available under the CC BY-SA 4.0 licence.
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