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Gaspéite

Big Photo

Australia
7.03 carats
© Rarestone.com

Gaspéite 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
(Ni,Mg)CO
 
3
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Physical Properties of Gaspéite
Mohs Hardness4.5 to 5
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Specific Gravity3.21
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Cleavage QualityPerfect
Arthur Thomas, Gemstones (2009)
FractureUneven
Arthur Thomas, Gemstones (2009)
Optical Properties of Gaspéite
Refractive Index1.610 to 1.830
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterUniaxial/-
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence0.220
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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PleochroismNil
Arthur Thomas, Gemstones (2009)
DispersionNil
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)Yellowish-green, green
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TransparencyTranslucent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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LustreVitreous
Arthur Thomas, Gemstones (2009)
Crystallography of Gaspéite
Crystal SystemTrigonal
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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HabitNodular concretions or as aggregates of rhombic crystals
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Geological Environment
Where found:Gaspéite is uncommon, occurring as a secondary mineral in a Ni-sulphide vein in metamorphosed siliceous dolostone
Michael O’Donoghue, Gems, Sixth Edition (2006)
Further Information
Mineral information:Gaspéite information at mindat.org
Significant Gem Localities
Canada
 
  • Québec
    • Gaspésie-ÃŽles-de-la-Madeleine
      • La Haute-Gaspésie RCM
        • Mont-Albert
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 414
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