|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
synthetic sodalite |
1.48 |
1.48 |
2.42 |
2.42 |
blue |
made in China |
|
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1994 Jun, p4 |
|
Sodalite |
1.48 |
1.48 |
2.41 |
2.41 |
colourless |
Afghanistan |
0.12ct |
|
yellow-green |
yellowish |
ACAM labo 922 |
|
Sodalite |
1.48 |
1.48 |
2.3 |
2.3 |
blue |
|
4ct, opaque |
|
|
|
ACAM labo 4074 |
|
Hackmanite - sodalite |
1.482 |
1.482 |
2.24 |
2.35 |
pink to light violet, light yellow |
Canada |
photochroism (after 10-15' violet colour is gone), 2 x 0.11 ct |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2008 Dec, p121 |
|
Sodalite |
1.484 |
1.484 |
2.3 |
2.3 |
colourless |
Afghanistan |
0.70ct |
|
inert |
faint orange |
http://www.spec4gem.info/index.php 2016 |
|
Hackmanite - sodalite |
1.485 |
1.487 |
2.3 |
2.32 |
pinkish, yellowish (pink to violet-red after UV) |
Mount st. Hilaire, Quebec, Canada |
photochroism; strong orange-red phosphorescence, 0.27 ct to 1.31 ct |
|
strong orange-red |
strong orange-red |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1991 Sep, p93-97 |
|
Hackmanite - sodalite |
1.485 |
1.485 |
2.37 |
2.37 |
light yellow |
Mont Saint-Hilaire, Québec, Canada |
2.94ct |
|
weak orange |
strong orange |
GIA Gem Database 35405 |
|
Sodalite |
1.49 |
1.49 |
2.31 |
2.31 |
violetish blue |
Namibia |
5.74ct, translucent |
broad absorption above 665nm |
inert |
inert |
GIA Gem Database 35515 |
TABLES
|
Stone |
RI
min |
RI
max |
Dens
min |
Dens
max |
Reference |
|
Sodalite |
1.477 |
1.487 |
2.13 |
2.3 |
http://www.geminterest.com |
|
Sodalite |
1.479 |
1.483 |
2.15 |
2.35 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Hackmanite - sodalite |
1.479 |
1.487 |
2.15 |
2.4 |
Gemology Tools Professional 2010 |
|
Sodalite |
1.479 |
1.487 |
2.15 |
2.4 |
Gemology Tools Professional 2010 |
|
Sodalite |
1.48 |
1.48 |
2.2 |
2.4 |
John Sinkakas, Gemstone and mineral data
book,1972 |
|
Sodalite |
1.48 |
1.487 |
2.2 |
2.4 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Sodalite |
1.48 |
1.487 |
2.13 |
2.4 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
synthetic sodalite |
1.48 |
1.48 |
2.42 |
2.42 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Sodalite |
1.48 |
1.487 |
2.15 |
2.35 |
Gems, R Webster, 5th edition 1994 |
|
Sodalite |
1.48 |
1.487 |
2.14 |
2.4 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
|
Sodalite |
1.482 |
1.488 |
2.21 |
2.35 |
Gemmo.eu
|
|
Sodalite |
1.483 |
1.487 |
2.27 |
2.33 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Hackmanite - sodalite |
1.483 |
1.487 |
2.14 |
2.4 |
http://www.gemmology.be |
|
Sodalite |
1.483 |
1.487 |
2.14 |
2.4 |
http://www.gemmology.be |
|
Sodalite |
1.483 |
1.487 |
2.14 |
2.4 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Sodalite |
blue |
SO4- colour center |
Steffen, Farbe und Lumineszenz von
Mineralien, 2000 |
|
Sodalite |
blue |
interstitial oxygen ion O- near Al or Si |
Gems & Gemology Summer 1988 |
|
Hackmanite - sodalite |
pink |
colour centre |
Steffen, Farbe und Lumineszenz von
Mineralien, 2000 |
|
Hackmanite - sodalite |
pink |
unstable electron substituting for Cl- in a
tetrahedron of Na+ ions |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Sodalite |
Poudrette quarry (Demix quarry; Uni-Mix quarry;
Desourdy quarry) |
Mont Saint-Hilaire, Rouville County |
Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1994, Dez, p137 |
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
Na2O |
Cl |
|
|
Hackmanite - sodalite |
|
Mont-St. Hilaire, Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1991, Sep, p94 |
36.6 |
31.6 |
23.6 |
7.01 |