|
INVESTIGATIONS
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 |
|
Brookite |
2.583 |
2.741 |
0.117 |
0.158 |
3.87 |
4.1 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Brookite |
2.583 |
2.74 |
0.122 |
0.157 |
3.87 |
4.14 |
2.583 |
2.583 |
2.584 |
2.584 |
2.700 |
2.740 |
http://www.geminterest.com
|
|
Brookite |
2.583 |
2.741 |
0.122 |
0.157 |
3.87 |
4.14 |
2.583 |
2.583 |
|
|
2.705 |
2.741 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Brookite |
2.583 |
2.741 |
0.117 |
0.158 |
3.87 |
4.14 |
2.583 |
2.583 |
2.884 |
2.886 |
2.700 |
2.741 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Brookite |
2.583 |
2.74 |
0.122 |
0.157 |
3.87 |
4.14 |
|
|
|
|
|
|
http://www.gemmology.be
|
|
Brookite |
2.583 |
2.705 |
0.122 |
0.157 |
3.87 |
4.01 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung, Pschichholz
FGA, 1975
|
|
Brookite |
2.583 |
2.74 |
0.122 |
0.157 |
3.87 |
4.14 |
2.583 |
2.583 |
2.584 |
2.584 |
2.700 |
2.740 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
|
Brookite |
2.583 |
2.705 |
0.12 |
0.122 |
4.1 |
4.2 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972
|
|
Brookite |
2.583 |
2.705 |
0.122 |
0.122 |
3.87 |
4.08 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994
|
|
Brookite |
2.583 |
2.74 |
0.122 |
0.157 |
3.87 |
4.18 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA