|
INVESTIGATIONS
TABLES
|
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
|
Simpsonite |
1.976 |
2.04 |
0.04 |
0.058 |
5.9 |
7 |
1.976 |
2.000 |
3.034 |
2.040 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Simpsonite |
1.976 |
2.034 |
0.058 |
0.058 |
5.92 |
6.84 |
|
|
|
|
http://www.gemmology.be
|
|
Simpsonite |
1.976 |
2.034 |
0.058 |
0.058 |
5.92 |
6.84 |
1.976 |
1.976 |
2.034 |
2.034 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
|
Simpsonite |
1.976 |
2.035 |
0.058 |
0.058 |
5.92 |
6.84 |
1.976 |
1.977 |
2.034 |
2.035 |
http://www.geminterest.com
|
|
Simpsonite |
1.976 |
2.04 |
0.046 |
0.058 |
5.93 |
6.84 |
1.976 |
1.994 |
2.034 |
2.040 |
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens, 2007
|
|
Simpsonite |
1.976 |
2.034 |
0.058 |
0.058 |
5.92 |
6.84 |
|
|
|
|
Gemology Tools Professional 2010
|
|
Simpsonite |
1.976 |
2.036 |
0.055 |
0.06 |
5.9 |
6.85 |
|
|
|
|
Gemmo.eu 2014
|
|
Simpsonite |
1.977 |
2.035 |
0.058 |
0.058 |
5.92 |
6.84 |
1.977 |
1.977 |
2.035 |
2.035 |
Michael O'Donoghue, Gems: Their
Sources, Descriptions and Identification (2006), 873pp
|
|
Simpsonite |
1.994 |
2.04 |
0.046 |
0.046 |
5.9 |
7.3 |
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Simpsonite |
1.994 |
2.04 |
0.046 |
0.046 |
5.9 |
7.3 |
1.994 |
1.994 |
2.040 |
2.040 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Simpsonite |
2.06 |
2.06 |
0.1 |
0.1 |
6 |
6 |
|
|
|
|
Gems, R Webster, 5th edition
1994
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE | |||
|
Simpsonite |
Tabba Tabba, Wallareenya
Station |
Port Hedland
Shire |
Western
Australia |
Australia |
Gems, Sixth Edition, Michael
O’Donoghue, 2006, p. 452 |
|
Simpsonite |
Alto do Giz pegmatite,
Equador |
Borborema mineral
province |
Rio Grande do
Norte |
Brazil |
Gems, Sixth Edition, Michael
O’Donoghue, 2006, p.
452 |
CHEMICAL DATA (%)