|
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 |
|
lepidolite |
1.53 |
1.53 |
|
|
2.7 |
2.7 |
pinkish purple with scattered
mossy purplish patches |
Plenty River Mica Mining Area,
Northern Territory, Australia |
opaque, spot
RI |
|
|
|
|
|
|
no
features |
inert |
inert |
The Journal of the Gemmological
Association of Hongkong 1996 Vol XIX,
p41-43 |
|
lepidolite |
1.55 |
1.55 |
|
|
2.86 |
2.86 |
purplish with a greyish
secondary hue |
Londonderry Feldspar Quarry,
Nepean, Coolgardie Shire, Western Australia,
Australia |
opaque, spot
RI |
|
|
|
|
|
|
no
features |
inert |
inert |
The Journal of the Gemmological
Association of Hongkong 1996 Vol XIX,
p41-43 |
|
lepidolite |
1.56 |
1.59 |
|
|
2.8 |
2.8 |
medium-dark pinkish
purple |
|
cabochon, spot
RI |
|
|
|
|
|
|
|
inert |
inert |
Gems & Gemology 1986 Summer,
p114 |
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 |
|
Lepidolite |
1.524 |
1.6 |
0.017 |
0.039 |
2.5 |
4 |
|
|
|
|
|
|
Gemmo.eu 2013
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
3.3 |
1.525 |
1.548 |
1.551 |
1.585 |
1.554 |
1.587 |
http://www.geminterest.com
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
2.9 |
1.525 |
1.548 |
1.551 |
1.585 |
1.554 |
1.587 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
3.3 |
|
|
|
|
|
|
http://www.gemmology.be
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
3.3 |
1.525 |
1.548 |
1.551 |
1.585 |
1.554 |
1.587 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
3.3 |
1.525 |
1.548 |
1.551 |
1.585 |
1.554 |
1.587 |
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens, 2007
|
|
Lepidolite |
1.525 |
1.587 |
0.018 |
0.038 |
2.8 |
3.3 |
|
|
|
|
|
|
Gemology Tools Professional 2010
|
|
Lepidolite |
1.53 |
1.556 |
0.026 |
0.026 |
2.8 |
3.3 |
|
|
|
|
|
|
Gems, R Webster, 5th edition
1994
|
|
Lepidolite |
1.54 |
1.54 |
|
|
2.8 |
2.9 |
|
|
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)