|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Location |
Info |
ne min |
ne max |
no min |
no max |
Spectrum |
UVS |
UVL |
Reference |
Wulfenite |
|
|
|
|
6.62 |
6.62 |
orange |
|
|
|
|
|
|
|
|
|
ACAM labo
|
Wulfenite |
|
|
|
|
6.9 |
6.9 |
yellowish
orange |
Red Cloud mine, Trigo Mts, La
Paz County, Arizona, USA |
5.41ct |
|
|
|
|
broad absorption below
520nm |
inert |
inert |
GIA Gem Database
35247 |
Wulfenite |
|
|
|
|
6.97 |
6.97 |
reddish
orange |
Red Cloud mine, Trigo Mts, La
Paz County, Arizona, USA |
2.03ct |
|
|
|
|
broad absorption below 535 and
above 675nm: lines at 578, 585, 587,
595 |
inert |
inert |
GIA Gem Database
35554 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Wulfenite |
2.28 |
2.4 |
0.12 |
0.12 |
6.5 |
7 |
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
Wulfenite |
2.28 |
2.405 |
0.98 |
0.122 |
6.5 |
7 |
2.280 |
2.304 |
2.400 |
2.405 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
Wulfenite |
2.28 |
2.4 |
0.12 |
0.12 |
6.5 |
7 |
2.280 |
2.280 |
2.400 |
2.400 |
Gemmological Tables, Ulrich Henn, 2004
|
Wulfenite |
2.283 |
2.405 |
0.122 |
0.122 |
6.5 |
7 |
2.283 |
2.283 |
2.405 |
2.405 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
Wulfenite |
2.283 |
2.405 |
0.122 |
0.122 |
6.5 |
7 |
|
|
|
|
http://www.gemmology.be
|
Wulfenite |
2.283 |
2.405 |
0.122 |
0.122 |
6.5 |
7 |
2.283 |
2.283 |
2.405 |
2.405 |
http://www.geminterest.com
|
Wulfenite |
2.283 |
2.405 |
0.122 |
0.122 |
6.5 |
7 |
|
|
|
|
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
Wulfenite |
2.304 |
2.402 |
0.098 |
0.098 |
6.5 |
7 |
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
Wulfenite |
2.304 |
2.402 |
0.098 |
0.098 |
6.7 |
7 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung, Pschichholz
FGA, 1975
|
Wulfenite |
2.304 |
2.402 |
0.098 |
0.098 |
6.7 |
7 |
|
|
|
|
Gems, R Webster, 5th edition
1994
|
CAUSE OF COLOUR
Stone |
Colour |
Cause of
colour |
Reference |
Wulfenite |
blue |
Mo4+ |
Gems & Gemology Summer
1988 |
Wulfenite |
yellow to
red |
OČ- -> Cr6- charge
transfer |
Gems & Gemology Summer
1988 |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)