|
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 |
|
Scorodite |
1.78 |
1.78 |
|
|
3.218 |
3.218 |
blue |
Tsumeb, Namibia |
|
|
|
|
|
|
|
band 420-430nm and 550-600 |
|
|
Gems & Gemology 1963 Spring, p18-19 |
|
Scorodite |
1.785 |
1.816 |
0.027 |
0.031 |
3.29 |
3.29 |
blue |
Tsumeb, Namibia |
2V: 75° |
1.785 |
1.785 |
1.795 |
1.796 |
1.812 |
1.816 |
|
|
|
Gems & Gemology 1976 Spring,
p130-136 |
|
Scorodite |
|
|
|
|
3.29 |
3.29 |
dark blue |
Tsumeb, Namibia |
1.58ct |
|
|
|
|
|
|
broad absorption below 450nm |
inert |
inert |
GIA Gem Database 35510 |
|
Scorodite |
|
|
|
|
3.29 |
3.29 |
colour change : dark green (daylight) to violetish red (incandescent
light) |
Tsumeb, Namibia |
1.41ct, translucent |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2017 Vol35, N°5, p388-389 |
|
Scorodite |
|
|
|
|
3.3 |
3.3 |
dark violetish blue |
Tsumeb, Namibia |
2.12ct |
|
|
|
|
|
|
broad absorption below 450nm |
inert |
inert |
GIA Gem Database 34714 |
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 |
|
Scorodite |
1.737 |
1.821 |
0.026 |
0.032 |
3.25 |
3.32 |
|
|
|
|
|
|
gemmo.eu 2019 |
|
Scorodite |
1.738 |
1.814 |
0.027 |
0.03 |
3.29 |
3.31 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Scorodite |
1.738 |
1.814 |
0.027 |
0.031 |
3.1 |
3.1 |
1.738 |
1.785 |
|
|
1.765 |
1.814 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Scorodite |
1.738 |
1.814 |
0.027 |
0.03 |
3.29 |
3.31 |
1.738 |
1.785 |
1.742 |
1.796 |
1.765 |
1.814 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Scorodite |
1.738 |
1.816 |
0.027 |
0.031 |
3.28 |
3.29 |
|
|
|
|
|
|
http://www.gemmology.be |
|
Scorodite |
1.738 |
1.816 |
0.027 |
0.031 |
3.28 |
3.29 |
1.738 |
1.785 |
1.742 |
1.796 |
1.765 |
1.816 |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
|
Scorodite |
1.738 |
1.82 |
0.027 |
0.031 |
3.28 |
3.29 |
1.738 |
1.785 |
1.742 |
1.805 |
1.765 |
1.820 |
http://www.geminterest.com |
|
Scorodite |
1.738 |
1.768 |
0.027 |
0.03 |
3.28 |
3.31 |
1.738 |
1.741 |
1.742 |
1.744 |
1.765 |
1.768 |
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Scorodite |
1.738 |
1.816 |
0.027 |
0.031 |
3.28 |
3.29 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Scorodite |
1.74 |
1.81 |
0.02 |
0.03 |
|
|
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data book,1972 |
|
Scorodite |
1.74 |
1.8 |
0.07 |
0.07 |
3.22 |
3.22 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Scorodite |
1.784 |
1.816 |
0.03 |
0.031 |
3.28 |
3.29 |
1.784 |
1.785 |
|
|
1.814 |
1.816 |
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Scorodite |
1.785 |
1.816 |
0.027 |
0.031 |
3.3 |
3.3 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
FeO |
H2O |
P2O5 |
As2O3 |
|
|
scorodite |
|
Durango |
Mexico |
Gems & Gemology 1976 Spring p132 |
|
|
34.79 |
15.44 |
|
49.52 |
|
scorodite |
|
Idaho |
USA |
Gems & Gemology 1976 Spring p132 |
|
|
34.02 |
17.33 |
4.8 |
44.4 |
|
scorodite |
|
Oregon |
USA |
Gems & Gemology 1976 Spring p132 |
|
5.76 |
25.72 |
17.04 |
1.72 |
48.88 |
|
scorodite |
|
|
India |
Gems & Gemology 1976 Spring p132 |
5.58 |
0.2 |
34.8 |
13.8 |
0.04 |
44.53 |
|
scorodite |
|
Tsumeb |
Namibia |
Gems & Gemology 1976 Spring p132 |
|
1.8 |
31.5 |
14.5 |
0.1 |
49.5 |