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Johachidolite

Big Photo

Myanmar
0.94 carats
© Palagems

Johachidolite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
General Information
Chemical Formula
CaAlB
 
3
O
 
7
Michael O’Donoghue, Gems, Sixth Edition (2006)
Physical Properties of Johachidolite
Mohs Hardness7.5
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Specific Gravity3.45
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical Properties of Johachidolite
Refractive Index1.717 to 1.724
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterBiaxial/+
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence0.007
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Colour
Colour (General)Yellow
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TransparencyTransparent,Translucent,Opaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Fluorescence & other light emissions
Fluorescence (Short Wave UV)A weak blue
Michael O’Donoghue, Gems, Sixth Edition (2006)
Fluorescence (Long-Wave UV)A strong whitish blue fluorescence
Michael O’Donoghue, Gems, Sixth Edition (2006)
Crystallography of Johachidolite
Crystal SystemOrthorhombic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
HabitEquant subhedral crystals
Michael O’Donoghue, Gems, Sixth Edition (2006)
Geological Environment
Where found:Occurs in a nepheline dike cutting limestone
Michael O’Donoghue, Gems, Sixth Edition (2006)
Further Information
Mineral information:Johachidolite information at mindat.org
Significant Gem Localities
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 420
        • Pein-Pyit (Painpyit; Pyan Pyit)
Ted Themelis (2008) Gems & mines of Mogok
North Korea
 
  • North Hamgyong Province
    • Kilju County
      • Changbaeng-myon
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 420
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