Nalipoite
A valid IMA mineral species
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About Nalipoite
Formula:
NaLi2PO4
Colour:
pale yellow, white, pale blue
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
2.58
Crystal System:
Orthorhombic
Name:
For Na, Li and P and O in its chemical composition.
This page provides mineralogical data about Nalipoite.
Unique Identifiers
Mindat ID:
2833
Long-form identifier:
mindat:1:1:2833:8
IMA Classification of Nalipoite
Approved
Approval year:
1990
First published:
1991
Classification of Nalipoite
8.AA.25
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
A : With small cations (some also with larger ones)
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
A : With small cations (some also with larger ones)
38.4.10.3
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
19.1.5
19 : Phosphates
1 : Phosphates of the alkali metals
19 : Phosphates
1 : Phosphates of the alkali metals
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 |
|---|---|---|
| Nlp | 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 Nalipoite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Pale yellow, white, pale blue
Streak:
White
Hardness:
4 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Distinct/Good
{100}, {010}, {001}, {110} good; distinct on probable
{101}.
{100}, {010}, {001}, {110} good; distinct on probable
{101}.
Fracture:
Irregular/Uneven
Density:
2.58(1) g/cm3 (Measured) 2.587 g/cm3 (Calculated)
Optical Data of Nalipoite
Type:
Biaxial (-)
RI values:
nα = 1.533(1) nβ = 1.540(1) nγ = 1.541(1)
2V:
Measured: 49° (1), Calculated: 41°
Max. Birefringence:
δ = 0.008
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:
None to Very Low
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:
weak
Pleochroism:
Non-pleochroic
Comments:
X = a, Y = c, Z = b
Chemistry of Nalipoite
Mindat Formula:
NaLi2PO4
Element Weights:
Elements listed:
Crystallography of Nalipoite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Cell Parameters:
a = 6.884(2) Å, b = 9.976(4) Å, c = 4.927(2) Å
Ratio:
a:b:c = 0.69 : 1 : 0.494
Unit Cell V:
338.36 ų (Calculated from Unit Cell)
Z:
4
Morphology:
anhedral to subhedral blocky grains, to 2 mm.
Comment:
Space Group: Pmnb.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
|---|---|---|---|---|---|---|---|
| 0005274 | Nalipoite | Ercit T S (1991) The crystal structure of nalipoite The Canadian Mineralogist 29 569-573 |  | 1991 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.02 Å | (100) |
| 3.507 Å | (100) |
| 3.441 Å | (100) |
| 2.833 Å | (40) |
| 2.712 Å | (40) |
| 2. 493 Å | (90) |
| 2. 462 Å | (90) |
| 1.721 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Nalipoite
General Appearance of Type Material:
Anhedral to subhedral blocky grains up to 2 mm in sodalite or analcime and as irregular grains (0.2 mm) in cavities in sodalite syenite xenoliths in the nepheline syenite.
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa - CT (2)
Royal Ontario Museum, Toronto - CT
Royal Ontario Museum, Toronto - CT
Geological Setting of Type Material:
Sodalite syenite xenoliths in nepheline syenite
Associated Minerals at Type Locality:
Synonyms of Nalipoite
Other Language Names for Nalipoite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.AA.05 | Alarsite | AlAsO4 |
| 8.AA.05 | Berlinite | AlPO4 |
| 8.AA.10 | Beryllonite | NaBePO4 |
| 8.AA.15 | Hurlbutite | CaBe2(PO4)2 |
| 8.AA.20 | Lithiophosphate | Li3PO4 |
| 8.AA.30 | Olympite | Na5Li(PO4)2 |
Fluorescence of Nalipoite
Not fluorescent
Other Information
Notes:
Readily in 1:1 HNO3, less readily in 1:1 HCl and slowly in 1:1 H2SO4.
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 Nalipoite
mindat.org URL:
https://www.mindat.org/min-2833.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Nalipoite
Reference List:
Chao, George Y., Ercit, T. Scott (1991) Nalipoite, sodium dilithium phosphate, a new mineral species from Mont Saint-Hilaire, Quebec. The Canadian Mineralogist, 29 (3) 565-568
Ercit, T. Scott (1991) The crystal structure of nalipoite. The Canadian Mineralogist, 29 (3) 569-573
Localities for Nalipoite
Showing 2 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 (TL) | |
| Chao et al. (1991) |
Russia | |
| Pekov (2005) |
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Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia