Phosinaite-(Ce)
A valid IMA mineral species
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About Phosinaite-(Ce)
Formula:
Na13Ca2(Ce,La,Th,Nd,Pr)(Si4O12)(PO4)4
Colour:
Light-brown, colourless, pale rose
Lustre:
Resinous
Hardness:
3½
Specific Gravity:
2.62 - 3.00
Crystal System:
Orthorhombic
Name:
For its major constituents - a phosphate silicate of sodium (from Latin "natrium")
This page provides mineralogical data about Phosinaite-(Ce).
Unique Identifiers
Mindat ID:
7231
Long-form identifier:
mindat:1:1:7231:7
Similar Names
| Fassinaite | A valid IMA mineral species | Pb2(S2O3)(CO3) |
IMA Classification of Phosinaite-(Ce)
Approved
IMA Formula:
Na13Ca2Ce3+(SiO3)4(PO4)4
Approval year:
1973
First published:
1974
Classification of Phosinaite-(Ce)
9.CF.15
9 : SILICATES (Germanates)
C : Cyclosilicates
F : [Si4O12]8- 4-membered single rings, with insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
F : [Si4O12]8- 4-membered single rings, with insular complex anions
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Psi-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Phosinaite-(Ce)
Resinous
Transparency:
Transparent
Colour:
Light-brown, colourless, pale rose
Streak:
White
Hardness:
3½ on Mohs scale
Hardness:
VHN100=207 - 340 - Vickers
Cleavage:
Perfect
Perfect on {100}, imperfect on {010} and {110}.
Perfect on {100}, imperfect on {010} and {110}.
Density:
2.62 - 3.00 g/cm3 (Measured) 3.36 g/cm3 (Calculated)
Optical Data of Phosinaite-(Ce)
Type:
Biaxial (-)
RI values:
nα = 1.567 - 1.570 nβ = 1.569 - 1.572 nγ = 1.570 - 1.573
2V:
Measured: 68° to 70°, Calculated: 70°
Max. Birefringence:
δ = 0.003
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v strong
Comments:
X=b, Y=c, Z=a
Chemistry of Phosinaite-(Ce)
Mindat Formula:
Na13Ca2(Ce,La,Th,Nd,Pr)(Si4O12)(PO4)4
Element Weights:
Crystallography of Phosinaite-(Ce)
Crystal System:
Orthorhombic
Class (H-M):
222 - Disphenoidal
Space Group:
P21212
Cell Parameters:
a = 7.234(3) Å, b = 14.670(4) Å, c = 12.231(4) Å
Ratio:
a:b:c = 0.493 : 1 : 0.834
Unit Cell V:
1,297.99 ų (Calculated from Unit Cell)
Z:
2
Morphology:
{110} (predominant), {100}, {010}, {001}.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005482 | Phosinaite-(Ce) | McDonald A M, Chao G Y (1996) Phosinaite-(Ce) from Mont Saint-Hilaire, Quebec: New data and structure refinement The Canadian Mineralogist 34 107-114 |  | 1996 | Mont Saint-Hilaire, Quebec, Canada | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.74 Å | (100) |
| 7.44 Å | (55) |
| 2.566 Å | (55) |
| 6.92 Å | (50) |
| 3.51 Å | (40) |
| 3.62 Å | (30) |
| 3.94 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Phosinaite-(Ce)
Co-Type Localities:
General Appearance of Type Material:
Accumulations of irregular form (Lovozero). Columnar crystals up to 5 x 1 mm (Khibina).
Place of Conservation of Type Material:
1) A. E. Fersman Mineralogical Museum, Russian Academy of Science, Moscow, Russia.
2) I.M.G.R.E., Moscow, Russia.
2) I.M.G.R.E., Moscow, Russia.
Geological Setting of Type Material:
Alkalic pegmatites (Khibina), ussingite veinlets cutting alkalic rock (Lovozero)
Associated Minerals at Type Locality:
Synonyms of Phosinaite-(Ce)
Other Language Names for Phosinaite-(Ce)
Dutch:Phosinaiet-(Ce)
German:Phosinait-(Ce)
Phosinait
Phosinait
Russian:Фосинаит-(Ce)
Simplified Chinese:磷硅铈钠石
Traditional Chinese:磷矽鈰鈉石
Common Associates
Associations Based on Photo Data:
| 6 photos of Phosinaite-(Ce) associated with Ussingite | Na2AlSi3O8OH |
| 4 photos of Phosinaite-(Ce) associated with Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) |
| 2 photos of Phosinaite-(Ce) associated with Natrosilite | Na2Si2O5 |
| 1 photo of Phosinaite-(Ce) associated with Natrolite | Na2Al2Si3O10 · 2H2O |
| 1 photo of Phosinaite-(Ce) associated with Microcline | K(AlSi3O8) |
| 1 photo of Phosinaite-(Ce) associated with Villiaumite | NaF |
| 1 photo of Phosinaite-(Ce) associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
| 9.CF. | Bobmeyerite | Pb4(Al3Cu)(Si4O12)(S0.5Si0.5O4)(OH)7Cl(H2O)3 |
| 9.CF.05 | Ashburtonite | Pb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2O |
| 9.CF.10 | Kainosite-(Y) | Ca2Y2(SiO3)4(CO3) · H2O |
| 9.CF.15 | Clinophosinaite | Na12(Ca,Sr)4(Si4O12)(PO4)4 |
| 9.CF.20 | Strakhovite | NaBa3Mn2+2Mn3+2Si6O19(OH)3 |
| 9.CF.25 | Cerchiaraite-(Al) | Ba4Al4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl |
| 9.CF.25 | Cerchiaraite-(Fe) | Ba4Fe3+4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl |
| 9.CF.25 | Cerchiaraite-(Mn) | Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4] |
Other Information
Thermal Behaviour:
Fuses at 860 deg.
Notes:
Dissolves slowly in concentrated acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Phosinaite-(Ce)
mindat.org URL:
https://www.mindat.org/min-7231.html
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Please feel free to link to this page.
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References for Phosinaite-(Ce)
Reference List:
Kapustin, Yu.L.; Khomyakov, A. P.; Semenov, Ye. I.; Yes'kova, Ye. M.; Bykova, A. V.; Pudovkina, Z. V. (1975) Phosinaite, a new rare-earth mineral. International Geology Review, 17 (6). 661-664 doi:10.1080/00206817509471648
Fleischer, Michael; Chao, G. Y.; Kato, Ikiro (1975) New Mineral Names. American Mineralogist, 60 (5-6). 485-489 p.488
Localities for Phosinaite-(Ce)
Showing 7 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Canada | |
| McDonald et al. (1996) |
Russia (TL) | |
| [World of Stones 95:5-6 +4 other references |
| [World of Stones 95:5-6 +4 other references |
| Pekov (2005) |
| Pekov (1998) | |
| Pekov (1998) +1 other reference | |
| Pekov I.V. et al. (2010) |
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Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia