|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Location |
Info |
ne min |
ne max |
no min |
no max |
Spectrum |
UVS |
UVL |
Reference |
Eudialyte |
1.592 |
1.599 |
0.007 |
0.007 |
2.93 |
2.93 |
red |
|
10 samples (0.09-0.67ct) |
1.592 |
1.592 |
1.599 |
1.599 |
bands and lines in yellow, green and blue |
inert |
inert |
Gemmology Today 2020 september, p60-63 |
Eudialyte |
1.596 |
1.601 |
0.004 |
0.004 |
|
|
|
Kippaw, Quebec, Canada |
|
1.600 |
1.601 |
1.596 |
1.597 |
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1985 34, Nr1/2, p76-78 |
Eudialyte |
1.598 |
1.628 |
|
|
2.88 |
3.07 |
brownish red |
Mont Saint-Hilaire, Quebec, Canada |
|
1.605 |
1.625 |
1.598 |
1.628 |
523nm, 527nm,595nm |
|
|
The Journal of Gemmology 1996 Vol 25, N°1,p35 |
Eudialyte |
1.599 |
1.602 |
0.003 |
0.003 |
|
|
orangy pink |
Quebec, Canada |
|
|
|
|
|
sharp lines at 521 and 572nm |
inert |
inert |
Gems & Gemology 1993 winter, p287 |
Eudialyte |
1,610 |
1,615 |
0.004 |
0.004 |
2.91 |
2.91 |
|
Kola, Russia |
|
1.614 |
1.615 |
1.610 |
1.611 |
cut-off at 530nm |
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1996 Mar, p25-27 |
Eudialyte |
|
|
|
|
2.93 |
2.93 |
dark orangy red |
Les Lacs-du-Témiscamingue, Québec, Canada |
1.52ct, transparent |
|
|
|
|
broad absorption below 425nm, lines at 453, 465, 522, 524, 528, 538, 573,
580, 586, 596 |
inert |
inert |
GIA Gem Database 35575 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Eudialyte |
1.567 |
1.633 |
0.002 |
0.01 |
2.74 |
3.01 |
1.572 |
1.633 |
1.567 |
1.632 |
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Eudialyte |
1.587 |
1.64 |
0.003 |
0.006 |
2.73 |
3.1 |
|
|
|
|
Gemmo.eu 2021 |
Eudialyte |
1.591 |
1.623 |
0.003 |
0.01 |
2.74 |
2.98 |
|
|
|
|
http://www.gemmology.be |
Eudialyte |
1.591 |
1.633 |
0.003 |
0.01 |
2.74 |
2.98 |
|
|
|
|
Gemology Tools Professional 2010 |
Eudialyte |
1.594 |
1.623 |
0.003 |
0.01 |
2.74 |
3 |
1.594 |
1.633 |
1.591 |
1.623 |
http://www.geminterest.com |
Eudialyte |
1.594 |
1.623 |
0.003 |
0.01 |
2.74 |
2.98 |
1.594 |
1.633 |
1.591 |
1.623 |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Eudialyte |
1.597 |
1.602 |
0.004 |
0.004 |
2.8 |
3 |
1.597 |
1.602 |
1.593 |
1.598 |
Gemmological Tables, Ulrich Henn,
2004 |
Eudialyte |
1.598 |
1.611 |
0.004 |
0.004 |
2.8 |
3.1 |
1.602 |
1.611 |
1.598 |
1.610 |
Gems, R Webster, 5th edition 1994 |
Eudialyte |
1.599 |
1.621 |
0.001 |
0.004 |
2.8 |
3.1 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
Eucolite -Ca-rich eudialyte- |
1.634 |
1.643 |
0.009 |
0.009 |
2.74 |
2.99 |
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyn, Ivo Quintens, 2007 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Eudialyte |
red |
Mn³+ in octahedral coordination |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1985, Jg 34, Nr 1/2, p76 |
Eudialyte |
red |
Fe²+ |
Alain Abréal, juillet 2002 |
MINERAL
INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Eudialyte |
Poudrette quarry (Demix quarry; Uni-Mix quarry;
Desourdy quarry) |
Mont Saint-Hilaire, Rouville County |
Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1994, Dez, p137 |
Eudialyte |
Kipawa alkaline complex, Sheffield Lake, Villedieu
Township |
Témiscamingue County |
Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1985 34, Nr1/2, p76-78 |
CHEMICAL DATA
(%)
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
FeO |
TiO2 |
CaO |
Na2O |
K2O |
ZrO2 |
Nb2O5 |
|
Eudialyte |
pinkish red |
Kippaw |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1985, 34, Nr1/2, p76-78 |
51.54 |
0.1 |
1.35 |
0.09 |
1.98 |
0.41 |
11.82 |
6.99 |
0.48 |
12.36 |
|
Eudialyte |
|
Norra Kärr |
Sweden |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1985, 34, Nr1/2, p76-78 |
53.45 |
0.73 |
1.85 |
|
3.67 |
0.15 |
9.28 |
3.4 |
0.27 |
11.7 |
|
Eudialyte |
|
Kola |
Russia |
Gemmologie, Zeitschrift der Deutschen
gemmologischen Gesellschaft, 1996, Mar p27 |
48.25 |
0.29 |
1.43 |
0.1 |
4.84 |
0.45 |
6.53 |
14.03 |
0.49 |
13.95 |
0.53 |