|
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 |
|
Ekanite |
1.59 |
1.59 |
|
|
3.27 |
3.27 |
greenish brown |
Sri Lanka |
2.79ct |
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1998 Sep, p169 |
|
Ekanite - metamict |
1.59 |
1.59 |
|
|
3.28 |
3.28 |
green |
|
|
|
|
|
|
|
|
|
Gems & Gemology 1962 Summer, p317 |
|
Ekanite - metamict |
1.59 |
1.59 |
|
|
3.28 |
3.28 |
brownish green |
Sri Lanka |
0.18ct |
|
|
|
|
|
inert |
inert |
ACAM lab 2293 |
|
Ekanite - metamict |
1.591 |
1.591 |
|
|
3.261 |
3.261 |
deep green |
Eheliyagoda district, Sri Lanka |
transparent |
|
|
|
|
lines 661, 590, 640, band 410-400 |
inert |
inert |
The Australian Gemmologist
1988 Feb , p348 |
|
Ekanite - metamict |
1.593 |
1.595 |
|
|
3.3 |
3.3 |
light yellowish green, dark
yellowish green, dark green, yellowish brown |
Sri Lanka |
radioactive |
|
|
|
|
band 665nm and weak band at
637 |
inert |
inert |
Gems & Gemology 1986 spring p48 |
|
Ekanite - metamict |
1.595 |
1.595 |
|
|
3.28 |
3.285 |
dark yellow-green, green,
dark greenish brown, dark green |
Ellawala, Sri Lanka |
12 stones |
|
|
|
|
|
|
|
Gems & Gemology 1961 Summer, p |
|
Ekanite - metamict |
1.595 |
1.595 |
|
|
3.288 |
3.288 |
blackish |
|
radioactive |
|
|
|
|
lines at 630 and 658nm |
|
|
The Journal of Gemmology
1974 N°4, p169 |
TABLES
|
Stone |
RI
min |
RI
max |
Biref
min |
Biref
max |
Dens
min |
Dens
max |
ne
min |
ne
max |
no
min |
no
max |
Reference |
|
Ekanite |
1.572 |
1.573 |
0.001 |
0.001 |
|
|
1.572 |
1.572 |
1.573 |
1.573 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Ekanite |
1.572 |
1.573 |
0.001 |
0.001 |
3.28 |
3.32 |
|
|
|
|
http://www.gemmology.be |
|
Ekanite |
1.59 |
1.596 |
0.001 |
0.001 |
2.95 |
3.36 |
|
|
|
|
http://www.geminterest.com |
|
Ekanite - metamict |
1.59 |
1.596 |
0.001 |
0.001 |
3.28 |
3.32 |
|
|
1.590 |
1.596 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Ekanite - metamict |
1.59 |
1.597 |
0.001 |
0.001 |
3.28 |
3.32 |
1.590 |
1.596 |
1.591 |
1.597 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Ekanite |
1.593 |
1.596 |
|
|
3.28 |
3.28 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Ekanite |
1.595 |
1.6 |
|
|
3.28 |
3.28 |
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
|
Ekanite |
1.596 |
1.596 |
|
|
3.28 |
3.28 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Ekanite - metamict |
1.597 |
1.597 |
|
|
3.28 |
3.32 |
|
|
|
|
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Ekanite |
1.597 |
1.597 |
|
|
3.28 |
3.28 |
|
|
|
|
Gems, R Webster,
5th edition 1994 |
|
Ekanite - metamict |
1.597 |
1.597 |
|
|
3.28 |
3.28 |
|
|
|
|
Gemology Tools Professional 2010 |
|
Ekanite |
1.567 |
1.598 |
0 |
0.013 |
2.94 |
3.37 |
|
|
|
|
Gemmo.eu
|
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
|
Inclusion |
Stone |
Reference |
|
albite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
calcite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
fluorite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
quartz |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
thorianite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
thorite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
zirkelite |
Ekanite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Ekanite |
|
Ehiliyagoda (Eheliyagoda) |
Ratnapura |
Sri Lanka |
Michael O'Donoghue, Gems:
Their Sources, Descriptions and Identification (2006), 873pp |
|
Ekaniet |
Okkampitiya |
Moneragala District |
Uva Province |
Sri Lanka |
Gems&Gemology Summer
2022 |
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
CaO |
PbO |
ThO2 |
UO2 |
|
|
Ekanite - metamict |
green |
|
Sri Lanka |
Gems & Gemology 1961, Summer, p173 |
55 |
0.8 |
12 |
0.65 |
28 |
3 |