|
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 |
Magnesioaxinite |
1.656 |
1.669 |
0.013 |
0.013 |
3.16 |
3.16 |
pale brownish orange |
Tanzania |
1.52ct and 1.62ct, biaxial + |
|
|
|
|
|
|
|
inert |
weak orange |
http://www.spec4gem.info/index.php 2017 |
Magnesioaxinite |
1.656 |
1.668 |
0.012 |
0.012 |
3.178 |
3.178 |
pale blue |
Tanzania |
0.78ct |
1.656 |
1.656 |
1.660 |
1.660 |
1.668 |
1.668 |
|
red |
orange-red |
The Journal of Gemmology 1975 N°8,p368-375 |
Magnesioaxinite |
1.657 |
1.668 |
0.011 |
0.011 |
3.18 |
3.18 |
brownish yellow |
Tanzania |
|
|
|
|
|
|
|
|
weak orange |
moderate orange |
Gems & Gemology 2005 summer, p170 |
Magnesioaxinite |
1.66 |
1.672 |
0.012 |
0.012 |
3.08 |
3.3 |
light bluish violet |
Merelani, Tanzania |
|
|
|
|
|
|
|
line at 410nm, weak cut off at 580nm |
strong orangy pink |
medium orange pink |
Gems & Gemology 2007 winter , p374 |
Axinite |
1.665 |
1.679 |
0.014 |
0.014 |
3.24 |
3.24 |
light blue |
|
manganaxinite |
1.665 |
1.665 |
1.672 |
1.672 |
1.679 |
1.679 |
|
|
|
Gems & Gemology 2008 spring p81 |
Magnesioaxinite |
1.667 |
1.679 |
0.011 |
0.012 |
3.23 |
3.25 |
purplish (to more orangey) brown |
Parachinar, Pakistan |
4 stones, 0.81ct to 1.36 ct,
strong pleochroism, biaxial positive |
1.667 |
1.668 |
1.672 |
1.673 |
1.678 |
1.679 |
|
|
|
The Journal of Gemmology 2018 36(4), p281-282 |
Axinite |
1.668 |
1.68 |
0.009 |
0.012 |
3.28 |
3.3 |
medium brown to light brown, modified by strong pleochroism and colour
zoning in reddish purple, orange red, blue to violet-green and pink |
Taftan Mts, Pakistan |
|
1.668 |
1.671 |
|
|
1.679 |
1.680 |
440, 470, 495, 515, 535 |
inert |
inert |
Gems & Gemology 2007 fall p 254-255 |
Ferroaxinite |
1.668 |
1.68 |
0.012 |
0.012 |
3.2 |
3.2 |
|
Tanzania |
|
|
|
|
|
|
|
|
inert |
inert |
Gems & Gemology 2007 winter p 374 |
Axinite |
1.669 |
1.679 |
0.01 |
0.01 |
3.29 |
3.29 |
brownish |
|
0.43ct |
|
|
|
|
|
|
512nm line |
inert |
inert |
ACAM lab
2299 |
Axinite |
1.67 |
1.683 |
0.012 |
0.012 |
3.29 |
3.29 |
brown |
|
1.6ct |
1.670 |
1.670 |
1.679 |
1.679 |
1.683 |
1.683 |
512nm line |
inert |
inert |
ACAM lab
1027 |
Axinite |
1.67 |
1.681 |
0.011 |
0.011 |
3.2 |
3.2 |
brown |
Baluchistan, Pakistan |
4.18 and 4.56ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun, p31-32 |
Axinite |
1.67 |
1.69 |
0.02 |
0.02 |
3.28 |
3.29 |
|
Shigar Fort, Pakistan |
cabochons, 6.57 and 5.79ct |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2016 Vol 35, No.2, p96-97 |
Axinite |
1.67 |
1.68 |
0.01 |
0.01 |
3.38 |
3.38 |
brownish yellowish orange |
Olivia Mine, Laguna Hansen, Baja California, Mexico |
9.10ct |
|
|
|
|
|
|
lines at 445, 490-500, 517-522nm |
inert |
inert |
GIA Gem Database 34448 |
Axinite |
1.671 |
1.68 |
0.009 |
0.009 |
3.31 |
3.31 |
dark yellowish orange |
Baja California, Mexico |
4.29ct, biaxial - |
|
|
|
|
|
|
446, 470, 492, 513 |
|
|
GIA Gem Database 33911 |
Ferroaxinite |
1.675 |
1.685 |
0.01 |
0.01 |
3.314 |
3.314 |
cinnamon brown |
Sri Lanka |
2V : 69.5° |
1.675 |
1.675 |
1.681 |
1.681 |
1.685 |
1.685 |
|
|
|
The Journal of Gemmology 1982 Vol18, N°1, p20-27 |
Axinite |
1.675 |
1.684 |
0.009 |
0.009 |
3.31 |
3.31 |
dark yellowish orange |
Baja California, Mexico |
8.71ct |
|
|
|
|
|
|
445, 480, 518, 538nm |
|
|
GIA Gem Database 33910 |
Axinite |
1.675 |
1.689 |
0.014 |
0.014 |
3.32 |
3.32 |
brown |
|
|
|
|
|
|
|
|
weak 512 line |
|
|
ACAM labo |
Axinite |
1.675 |
1.685 |
0.01 |
0.01 |
3.33 |
3.33 |
dark reddish orange |
Mahiyangana River, Uva, Sri Lanka |
8.30ct |
|
|
|
|
|
|
line at 520nm, band at 475-485nm and 490-505nm |
inert |
inert |
GIA Gem Database 34780 |
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 |
Magnesioaxinite |
1.655 |
1.682 |
0.009 |
0.014 |
3.18 |
3.2 |
1.655 |
1.668 |
1.660 |
1.676 |
1.668 |
1.682 |
http://www.geminterest.com |
Axinite |
1.656 |
1.693 |
0.01 |
0.012 |
3.17 |
3.31 |
1.656 |
1.683 |
|
|
1.668 |
1.693 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
Axinite |
1.656 |
1.695 |
0.009 |
0.012 |
3.18 |
3.32 |
1.656 |
1.683 |
1.660 |
1.693 |
1.668 |
1.695 |
Gemmological Tables, Ulrich Henn,
2004 |
Magnesioaxinite |
1.656 |
1.668 |
0.01 |
0.012 |
3.18 |
3.18 |
|
|
|
|
|
|
http://www.gemmology.be |
Magnesioaxinite |
1.656 |
1.668 |
0.012 |
0.012 |
3.18 |
3.18 |
1.656 |
1.656 |
1.660 |
1.660 |
1.668 |
1.668 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Axinite |
1.656 |
1.685 |
0.01 |
0.01 |
3.178 |
3.29 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
Magnesioaxinite |
1.656 |
1.672 |
0.009 |
0.012 |
3.08 |
3.3 |
1.656 |
1.660 |
|
|
1.668 |
1.672 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Magnesioaxinite |
1.658 |
1.668 |
0.012 |
0.012 |
3.18 |
3.18 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
Axinite |
1.665 |
1.704 |
0.009 |
0.014 |
3.18 |
3.36 |
1.665 |
1.693 |
1.672 |
1.701 |
1.679 |
1.704 |
http://www.geminterest.com |
Axinite |
1.665 |
1.705 |
0.008 |
0.013 |
3.15 |
3.35 |
|
|
|
|
|
|
Gemmo.eu
|
Ferroaxinite |
1.668 |
1.685 |
0.01 |
0.012 |
3.2 |
3.32 |
1.668 |
1.675 |
1.679 |
1.681 |
1.682 |
1.685 |
Tables of Gemstone Identification, Roger Dedeyn, Ivo
Quintens, 2007 |
Axinite |
1.668 |
1.698 |
0.01 |
0.012 |
3.26 |
3.36 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Axinite |
1.672 |
1.69 |
0.01 |
0.012 |
3.25 |
3.3 |
1.672 |
1.678 |
|
|
1.684 |
1.690 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Axinite |
1.673 |
1.704 |
0.01 |
0.012 |
3.26 |
3.36 |
1.673 |
1.693 |
|
|
1.683 |
1.704 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Axinite |
1.674 |
1.704 |
0.01 |
0.012 |
3.26 |
3.36 |
|
|
|
|
|
|
http://www.gemmology.be |
Axinite |
1.674 |
1.704 |
0.01 |
0.012 |
3.26 |
3.36 |
1.674 |
1.693 |
1.681 |
1.701 |
1.684 |
1.704 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Axinite |
1.674 |
1.704 |
0.01 |
0.012 |
3.26 |
3.36 |
1.674 |
1.693 |
1.681 |
1.701 |
1.684 |
1.704 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Axinite |
1.675 |
1.685 |
0.01 |
0.01 |
3.27 |
3.29 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Axinite |
blue |
V³+ in octahedral
coordination |
Gems & Gemology Summer 1988 |
Axinite |
brown |
Fe²+ |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
Inclusion |
Stone |
Reference |
goethite |
Axinite -axinite group |
Gemmological Tables, Ulrich Henn , GGA, 2004 |
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Ferroaxinite |
|
Bourg d'Oisans |
Isère |
France |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Axinite |
|
Taftan Mts |
Balochistan (Baluchistan) |
Pakistan |
Gems & Gemology 2007 Fall, p 254-255 |
Ferroaxinite |
Pouyva (Puiva) Mine, Saranpual, Polar Urals |
Tyumenskaya Oblast' |
Siberia |
Russia |
MinRec 30:465 |
Axinite |
Pouyva (Puiva) Mine, Saranpual, Polar Urals |
Tyumenskaya Oblast' |
Siberia |
Russia |
Lapis 1/2003 |
Magnesioaxinite |
Merelani Hills, Umba Valley |
Lelatema Mts |
Arusha region |
Tanzania |
www.mindat.org |
Ferroaxinite |
New Melones Lake |
Calaveras County |
California |
USA |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Ferroaxinite |
Coarsegold axinite locality - 5 miles NE of
Coarsegold |
Madera County |
California |
USA |
http://www.mineralsocal.org/scfm/ |
Ferroaxinite |
Piz Vallatscha |
Medelsertal |
Graubünden |
Switzerland |
Mineralienlexikon der Schweiz, Hans
Anton Stalder e.a., 1998 |
CHEMICAL DATA
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
FeO |
TiO2 |
CaO |
Na2O |
V2O3 |
Fe2O3 |
K2O |
ZnO |
H2O |
B2O3 |
|
Magnesioaxinite |
|
New South Wales |
Australia |
The Journal of Gemmology 1982, Vol 18, N°1, p21 |
42.39 |
17.1 |
1.38 |
4.2 |
5.18 |
|
20.31 |
0.06 |
|
1.68 |
0.03 |
|
1.98 |
5.52 |
Ferroaxinite |
|
Bourg d'Oisons |
France |
The Journal of Gemmology 1982, Vol 18, N°1, p21 |
42.2 |
17.5 |
3.3 |
1.6 |
6.1 |
0.03 |
20.1 |
0.04 |
|
|
0.02 |
|
|
|
axinite |
light brown zone |
Baluchistan |
Pakistan |
Gems & Gemology Fall 2007, 244-255 |
42.81 |
17.49 |
0.12 |
2.98 |
8.61 |
0.04 |
19.57 |
0.03 |
|
|
0.02 |
|
1.6 |
6.18 |
axinite |
blue zone |
Baluchistan |
Pakistan |
Gems & Gemology Fall 2007, 244-255 |
42.74 |
17.43 |
0.1 |
2.99 |
8.57 |
0.05 |
19.57 |
0.06 |
|
|
|
|
1.6 |
6.17 |
Ferroaxinite |
cinnamon brown |
|
Sri Lanka |
The Journal of Gemmology 1982, Vol 18, N°1, p21 |
42.7 |
18.31 |
0.38 |
1.4 |
10.4 |
|
19.35 |
|
|
|
0.01 |
|
|
|
Ferroaxinite |
brown |
|
Tanzania |
Gems & Gemology winter 2007, p
373-375 |
42.97 |
17.77 |
0.62 |
2.94 |
7.8 |
|
20.1 |
0.05 |
|
|
0.04 |
|
1.61 |
6.22 |
Magnesioaxinite |
light bluish violet |
|
Tanzania |
Gems & Gemology winter 2007, p
373-375 |
43.84 |
18.56 |
1.99 |
6.27 |
0.05 |
|
20.46 |
0.02 |
|
|
0.02 |
|
1.64 |
6.35 |
Magnesioaxinite |
|
|
Tanzania |
The Journal of Gemmology 1982, Vol 18, N°1, p21 |
440 |
17.9 |
0.4 |
6.9 |
|
0.03 |
21.7 |
|
0.13 |
|
0.01 |
0.06 |
|
|