Musgravite

In mineralogy, the name Musgravite refers to the mineral called Magnesiotaaffeite-6N’3S. It crystallizes in the trigonal system.

The closely-related Magnesiotaaffeite, which crystallizes in the hexagonal system, is known in mineralogy as Magnesiotaaffeite-2N’2S. Together, they are both part of the Taaffeite group.

Musgravite 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
A variety or type of:Taaffeite
Other Names/Trade Names:
Chemical Formula
(Mg,Fe,Zn)Al
 
6
BeO
 
12
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Physical Properties of Musgravite
Specific Gravity3.62 to 3.68
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Optical Properties of Musgravite
Refractive Index1.719 to 1.739
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Optical CharacterUniaxial
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Birefringence0.014 to 0.016
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Colour
Colour (General)Gray-green, green
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
TransparencyTransparent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Crystallography of Musgravite
Crystal SystemTrigonal
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Further Information
Mineral information:Musgravite information at mindat.org
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