|
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 |
Stibiotantalite |
|
|
|
|
7.33 |
7.33 |
near colourless |
|
0.88ct |
|
|
|
|
|
|
|
|
|
Gems & Gemology 1980 Spring, p268 |
Stibiotantalite |
|
|
|
|
7.52 |
7.52 |
light orangy yellow |
|
7.07ct |
|
|
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 35529 |
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 |
Stibiotantalite |
2.37 |
2.45 |
0.08 |
0.08 |
7.2 |
7.8 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Stibiotantalite |
2.37 |
2.45 |
0.07 |
0.08 |
7.2 |
7.8 |
2.370 |
2.370 |
|
|
2.450 |
2.450 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Stibiotantalite |
2.37 |
2.45 |
0.08 |
0.08 |
7.2 |
7.9 |
2.370 |
2.370 |
2.400 |
2.400 |
2.450 |
2.450 |
Gemmological Tables, Ulrich Henn,
2004 |
Stibiotantalite |
2.37 |
2.46 |
0.09 |
0.09 |
7.34 |
7.46 |
|
|
|
|
|
|
http://www.gemmology.be |
Stibiotantalite |
2.37 |
2.46 |
0.09 |
0.09 |
7.34 |
7.46 |
2.370 |
2.370 |
2.400 |
2.400 |
2.460 |
2.460 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Stibiotantalite |
2.37 |
2.46 |
0.09 |
0.09 |
7.34 |
7.46 |
2.370 |
2.370 |
2.400 |
2.400 |
2.460 |
2.460 |
http://www.geminterest.com |
Stibiotantalite |
2.37 |
2.46 |
0.09 |
0.09 |
7.34 |
7.46 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Stibiotantalite |
2.37 |
2.46 |
0.09 |
0.09 |
7.34 |
7.46 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Stibiotantalite |
2.37 |
2.458 |
0.087 |
0.093 |
5.95 |
7.55 |
|
|
|
|
|
|
Gemmo.eu 2013 |
Stibiotantalite |
2.39 |
2.46 |
0.07 |
0.07 |
7.35 |
7.46 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
Stibiotantalite |
2.39 |
2.46 |
0.07 |
0.07 |
7 |
7.45 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Stibiotantalite |
2.39 |
2.46 |
0.07 |
0.07 |
7.46 |
7.46 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)