|
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 |
|
Vlasovite |
1.607 |
1.625 |
0.018 |
0.018 |
3 |
3 |
brownish yellow, transparent |
Canada |
0.72ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2008 Dec, p122 |
|
Vlasovite |
1.608 |
1.627 |
0.019 |
0.019 |
2.95 |
2.95 |
brownish-yellow |
Russia |
0.34 ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1997 Jun, p66 |
|
Vlasovite |
1.608 |
1.628 |
0.02 |
0.02 |
3.01 |
3.01 |
|
|
1.20ct |
|
|
|
|
|
|
|
very weak yellow |
inert |
Gems & Gemology 2019 Fall, p 425 |
|
Vlasovite |
1.609 |
1.624 |
0.015 |
0.015 |
|
|
brownish yellow |
Quebec, Canada |
|
|
|
|
|
|
|
none |
|
weak , moderately chalky, brownish orange |
Gems & Gemology 1993 winter,
p287-288 |
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 |
|
Vlasovite |
1.604 |
1.626 |
0.017 |
0.021 |
2.91 |
2.98 |
|
|
|
|
|
|
Gemmo.eu 2013 |
|
Vlasovite |
1.607 |
1.628 |
0.021 |
0.021 |
2.96 |
2.98 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
|
Vlasovite |
1.607 |
1.628 |
0.021 |
0.021 |
2.97 |
2.97 |
1.607 |
1.607 |
1.623 |
1.623 |
1.628 |
1.628 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Vlasovite |
1.607 |
1.628 |
0.019 |
0.021 |
2.95 |
2.97 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
|
Vlasovite |
1.607 |
1.628 |
0.021 |
0.021 |
2.97 |
2.97 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Vlasovite |
Kipawa alkaline complex, Sheffield Lake, Villedieu
Township |
Témiscamingue County |
Québec |
Canada |
Gems & Gemology 2012 Spring, p59 |
CHEMICAL DATA
(%)