|
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 |
|
Natrolite |
1.472 |
1.491 |
0.019 |
0.019 |
2.29 |
2.29 |
colourless |
|
0.81ct |
1.472 |
1.472 |
1.482 |
1.482 |
1.491 |
1.491 |
|
inert |
inert |
ACAM lab
1449 |
|
Natrolite |
1.477 |
1.49 |
0.013 |
0.013 |
2.26 |
2.26 |
|
St. Hilaire, Quebec, Canada |
|
1.477 |
1.477 |
1.481 |
1.481 |
1.490 |
1.490 |
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1993 Mar, p43-45 |
|
Natrolite |
1.478 |
1.491 |
0.013 |
0.013 |
2.27 |
2.27 |
colourless |
Russia |
0.7 ct |
1.478 |
1.478 |
1.485 |
1.485 |
1.491 |
1.491 |
|
inert |
inert |
ACAM labo 4744 |
|
Natrolite |
1.478 |
1.49 |
0.012 |
0.012 |
|
|
colourless |
Bound Brook, New Jersey, USA |
|
1.478 |
1.478 |
1.480 |
1.480 |
1.490 |
1.490 |
|
inert |
inert |
The Journal of Gemmology 1977 N°3,p115-116 |
|
Natrolite |
1.479 |
1.491 |
0.012 |
0.012 |
2.25 |
2.25 |
colourless |
Mont Saint-Hilaire, Quebec, Canada |
|
1.478 |
1.479 |
1.485 |
1.485 |
1.491 |
1.491 |
|
may fluoresce white |
may fluoresce white |
The Journal of Gemmology 1996 Vol 25, N°1,p36 |
|
Natrolite |
1.48 |
1.485 |
0.005 |
0.005 |
|
|
colourless |
WSW of Hazarganji, Bela ophiolite, Pakistan |
transparent, 2V= 63°; cut stones : 20.62ct, 13.48ct, 11.26ct, 5.08ct,
2.53ct |
|
|
|
|
|
|
|
inert |
inert |
The Journal of Gemmology 1998 Vol 26, N°5,p308-312 |
|
Natrolite |
1.48 |
1.48 |
|
|
2.15 |
2.15 |
yellow-brown |
Most, Bohemia, Czech Republic |
massive, cabochon, opaque |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995 Sep, p4 |
|
Natrolite |
1.48 |
1.49 |
0.01 |
0.01 |
2.32 |
2.32 |
colourless |
Montana, USA |
4.54ct |
|
|
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 35190 |
|
Natrolite |
1.49 |
1.49 |
|
|
2.24 |
2.24 |
orangy pink to brownish pink with white zoning |
Nusa Kambangan, Central Java,
Indonesia |
opaque, cabochons |
|
|
|
|
|
|
|
|
|
Gems & Gemology 2020 Summer p310 |
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 |
|
Natrolite |
1.473 |
1.496 |
0.013 |
0.013 |
2.2 |
2.26 |
1.473 |
1.485 |
|
|
1.483 |
1.496 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Natrolite |
1.473 |
1.496 |
0.011 |
0.013 |
2.2 |
2.26 |
1.473 |
1.483 |
|
|
1.485 |
1.496 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Natrolite |
1.473 |
1.496 |
0.012 |
0.012 |
2.2 |
2.26 |
1.473 |
1.483 |
1.476 |
1.486 |
1.485 |
1.496 |
http://www.geminterest.com |
|
Natrolite |
1.473 |
1.496 |
0.012 |
0.012 |
2.2 |
2.26 |
|
|
|
|
|
|
http://www.gemmology.be |
|
Natrolite |
1.473 |
1.496 |
0.012 |
0.012 |
2.2 |
2.26 |
1.473 |
1.483 |
1.476 |
1.486 |
1.485 |
1.496 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
|
Natrolite |
1.473 |
1.496 |
0.012 |
0.014 |
2.2 |
2.26 |
1.473 |
1.483 |
1.476 |
1.486 |
1.485 |
1.496 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
|
Natrolite |
1.473 |
1.496 |
0.012 |
0.012 |
2.2 |
2.26 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Natrolite |
1.477 |
1.492 |
0.01 |
0.013 |
2.15 |
2.3 |
|
|
|
|
|
|
Gemmo.eu
|
|
Natrolite |
1.478 |
1.493 |
0.012 |
0.013 |
2.2 |
2.25 |
1.478 |
1.480 |
1.480 |
1.482 |
1.490 |
1.493 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Natrolite |
1.48 |
1.493 |
0.013 |
0.013 |
2.2 |
2.25 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
|
Natrolite |
1.48 |
1.493 |
0.013 |
0.013 |
2.2 |
2.3 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Natrolite |
1.48 |
1.493 |
0.013 |
0.013 |
2.2 |
2.25 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Natrolite |
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry) |
Mont Saint-Hilaire, Rouville County |
Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1994, Dez, p137 |
|
Natrolite |
Natrolite occurrence, Nusa Kambangan |
Cilacap Regency |
Central Java Province |
Indonesië |
The Journal of Gemmology 2020, Vol37 (3) p243 |
|
Natrolite |
Hazarganji |
Bela ophiolite |
|
Pakistan |
The Journal of Gemmology 1999, Vol 26, N°5, p308-312 |
|
Natrolite |
Soutesky |
Decin, Ceske Stredohory Mts, Krusne Hory, Severocesky |
Bohemia |
Tsjechië |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1992, Dec, p166 |
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
FeO |
TiO2 |
Na2O |
Cr2O3 |
K2O |
|
|
Natrolite |
colourless |
WSW of Hazarganji, Bela ophiolite |
Pakistan |
The Journal of Gemmology 1998, Vol 26, N°5, p311 |
46.55 |
26.74 |
0.05 |
0.07 |
0.04 |
0.08 |
16.34 |
0.07 |
0.06 |
|
Natrolite |
colourless |
Bound Brook, New Jersey |
USA |
The Journal of Gemmology, 1976, N°3,p116 |
48.5 |
27.2 |
|
|
|
|
16.2 |
|
|
|
Natrolite |
colourless |
Bound Brook, New Jersey |
USA |
The Journal of Gemmology, 1976, N°3,p116 |
47.4 |
26.8 |
|
|
|
|
16.3 |
|
|