|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Locality |
Info |
nx min |
nx max |
ny min |
ny max |
nz min |
nz max |
Spectrum |
UVS |
UVL |
Reference |
|
Pyroxmangite |
1.721 |
1.732 |
0.011 |
0.011 |
3.71 |
3.71 |
red |
Conselheiro Pena, Minas Gerais,
Brazil |
8.54ct, biaxial
+ |
|
|
|
|
|
|
broad absorption below 425nm
and between 535-555nm, lines at 440, 465,
507nm |
inert |
inert |
GIA Gem Database
35584 |
|
Pyroxmangite |
1.728 |
1.758 |
|
|
3.61 |
3.8 |
pink, red |
|
|
1.728 |
1.748 |
1.730 |
1.742 |
1.746 |
1.758 |
strong band at 410-420, sharp
line at 503nm, broad band at
540-560nm |
|
|
Gems & Gemology 2006 winter, p
266 |
TABLES
|
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
nx min |
nx
max |
ny min |
ny max |
nz min |
nz max |
Reference |
|
Pyroxmangite |
1.726 |
1.767 |
0.016 |
0.02 |
3.6 |
3.8 |
1.726 |
1.748 |
|
|
1.744 |
1.767 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Pyroxmangite |
1.726 |
1.764 |
0.016 |
0.02 |
3.61 |
3.8 |
|
|
|
|
|
|
http://www.gemmology.be
|
|
Pyroxmangite |
1.726 |
1.764 |
0.016 |
0.02 |
3.61 |
3.8 |
1.726 |
1.748 |
1.728 |
1.750 |
1.744 |
1.764 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
|
Pyroxmangite |
1.726 |
1.764 |
0.015 |
0.02 |
3.61 |
3.8 |
1.726 |
1.748 |
1.728 |
1.750 |
1.743 |
1.764 |
http://www.geminterest.com
|
|
Pyroxmangite |
1.726 |
1.764 |
0.016 |
0.02 |
3.61 |
3.8 |
1.726 |
1.748 |
1.728 |
1.750 |
1.744 |
1.764 |
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
|
Pyroxmangite |
1.734 |
1.756 |
0.017 |
0.019 |
3.76 |
3.76 |
1.734 |
1.738 |
|
|
1.751 |
1.756 |
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Pyroxmangite |
1.735 |
1.756 |
0.017 |
0.019 |
3.76 |
3.77 |
1.735 |
1.737 |
1.742 |
1.744 |
1.752 |
1.756 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Pyroxmangite |
1.736 |
1.753 |
0.017 |
0.017 |
3.76 |
3.76 |
|
|
|
|
|
|
Gems, R Webster, 5th edition
1994
|
|
Pyroxmangite |
1.75 |
1.76 |
0.01 |
0.01 |
3.8 |
3.8 |
|
|
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
CAUSE OF COLOUR
|
Stone |
Colour |
Cause of
colour |
Reference |
|
Pyroxmangite |
red, pink |
Mn²+ in octahedral
coordination |
Steffen, Farbe und Lumineszenz von Mineralien,
2000 |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)