Analcime (Analcite)

Big Photo

Australia
1.02 carats
© Rarestone.com

Analcime is named after Greek "analkis" - weak, alluding to the weak electrostatic charge that develops when it is heated or rubbed.

Small colourless transparent crystals of analcime have occasionally been cut for collectors.

Analcime Cat's eye is known.

Analcime Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 

Analcime Gemstones by Size

This table shows distribution of Analcime gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:1.02 cts
Heaviest:1.03 cts
Average:1.02 cts
Total photos:2
Do you have a larger Analcime? Why not upload a photo?
1.02ct to 1.02ct1.02ct to 1.02ct1.02ct to 1.02ct1.02ct to 1.02ct1.02ct to 1.03ct1.03ct to 1.03ct1.03ct to 1.03ct1.03ct to 1.03ct1.03ct to 1.03ct1.03ct to 1.03ct
General Information
Chemical Formula
NaAlSi
 
2
O
 
6
· H
 
2
O
Michael O’Donoghue, Gems, Sixth edition (2006)
More from other references
Photos of natural/un-cut material from mindat.org
Physical Properties of Analcime
Mohs Hardness5 to 5.5
Walter Schumann, Gemstones of the world (2001)
More from other references
Specific Gravity2.22 to 2.30
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
TenacityBrittle
Arthur Thomas, Gemstones (2009)
Cleavage QualityIndistinct
Arthur Thomas, Gemstones (2009)
FractureSub-Conchoidal
Arthur Thomas, Gemstones (2009)
Heat SensitivitySensitive to heat
Arthur Thomas, Gemstones (2009)
Optical Properties of Analcime
Refractive Index1.487
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Optical CharacterIsotropic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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DispersionWeak
Arthur Thomas, Gemstones (2009)
ChatoyancyChatoyant
Walter Schumann, Gemstones of the world (2001)
Colour
Colour (General)Colourless, white, pink, yellowish, greenish.
Walter Schumann, Gemstones of the world (2001)
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TransparencyTransparent,Translucent,Opaque
Walter Schumann, Gemstones of the world (2001)
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LustreVitreous
Arthur Thomas, Gemstones (2009)
Fluorescence & other light emissions
Fluorescence (Long-Wave UV)Occasionally exhibits white fluorescence.
Arthur Thomas, Gemstones (2009)
Crystallography of Analcime
Crystal SystemIsometric
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
HabitIcositetrahedral crystals
Michael O’Donoghue, Gems, Sixth edition (2006)
More from other references
Geological Environment
Where found:Occurs as a low temperature mineral in vesicular cavities in basalt, diabase and other igneous rocks.
Arthur Thomas, Gemstones (2009)
Further Information
Mineral information:Analcime information at mindat.org
Significant Gem Localities
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 380
UK
 
  • England
    • Leicestershire
      • Blaby
        • Croft
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 380
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