|
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 |
|
phosphosiderite |
1.69 |
1.71 |
|
|
2.76 |
2.76 |
purple |
|
cabochons, sold as purple jade, filled with epoxy resin, RI spot reading |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2017 Vol 35-7, p592 |
|
phosphosiderite |
1.7 |
1.7 |
|
|
2.59 |
2.59 |
purplish pink |
|
cabochon 9.34ct, opaque, RI spot |
|
|
|
|
|
|
|
light brown-yellow |
green |
ACAM Lab
1931 |
|
phosphosiderite |
|
|
|
|
2.56 |
2.56 |
purple, opaque |
|
3.61 and 3.63 ct, cabochons, impregnated with a polymer |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2016 Jun, p56-59 |
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 |
|
phosphosiderite |
1.69 |
1.74 |
0.045 |
0.047 |
2.72 |
2.78 |
|
|
|
|
|
|
Gemmo.eu 2016 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Phosphosiderite |
|
Copiapo |
Atacama |
Chili |
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft, Jun 2016, p 59 |
|
Phosphosiderite |
Sapucaia Mine, Conselheiro Peno district, Galiléia, Governador Valadares |
Rio Doce |
Minas Gerais |
Brazilië |
MinRecord 30:347 |
CHEMICAL DATA
(%)