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Lisetite
A valid IMA mineral species
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Formula:
CaNa2Al4Si4O16
Colour:
Colorless
Specific Gravity:
2.73 (Calculated)
Crystal System:
Orthorhombic
Name:
Named after the type locality.
Type Locality:
Tectosilicate with a crystal structure related to that of feldspars (e.g. banalsite). Forms at high pressures.
Unique Identifiers
Mindat ID:
2414
Long-form identifier:
mindat:1:1:2414:9
Similar Names
| Lussatita | A synonym of Cristobalite | |
| Lussatite | A variety of 'Opal-CT' [Opal] | SiO2 · nH2O |
IMA Classification of Lisetite
Approved
IMA Formula:
Na2CaAl4(SiO4)4
Approval year:
1985
First published:
1986
Classification of Lisetite
9.FA.55
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.6.3
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.10.2
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
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 |
|---|---|---|
| Lis | 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 Lisetite
Transparency:
Transparent
Colour:
Colorless
Density:
2.73 g/cm3 (Calculated)
Optical Data of Lisetite
Type:
Biaxial
RI values:
nα = 1.56 nγ = 1.57
Max. Birefringence:
δ = 0.010
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:
Low (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
Dispersion:
none
Chemistry of Lisetite
Mindat Formula:
CaNa2Al4Si4O16
Element Weights:
Common Impurities:
Ti,Fe,Mn,Ni,Mg,K
Crystallography of Lisetite
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 8.260(1) Å, b = 17.086(1) Å, c = 9.654(1) Å
Ratio:
a:b:c = 0.483 : 1 : 0.565
Unit Cell V:
1362.5 ų
Z:
4
Comment:
Spacegroup: Pbc21
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) |
|---|---|---|---|---|---|---|---|
| 0001051 | Lisetite | Rossi G, Oberti R, Smith D C (1986) Crystal structure of lisetite, CaNa2Al4Si4O16 American Mineralogist 71 1378-1383 | ![]() | 1986 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.198 Å | (100) |
| 4.162 Å | (44) |
| 3.468 Å | (36) |
| 3.534 Å | (31) |
| 2.954 Å | (31) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Lisetite
General Appearance of Type Material:
Observed in thin sections often grouped in clusters as part of lathlike structures.
Place of Conservation of Type Material:
In the Museum of the Dipartimento di Scienze della Terra, Universitá di Pavia, Italy.
Empirical Formula of Type Material:
Ca0.993Na1.961Al3.993Si4.019O16
Chemical Analysis of Type Material:
| SiO2 | 43.09 % |
|---|---|
| TiO2 | 0.02 % |
| Al2O3 | 36.33 % |
| FeO | 0.12 % |
| MnO | 0.01 % |
| MgO | 0.01 % |
| NiO | 0.03 % |
| CaO | 9.80 % |
| Na2O | 10.84 % |
| K2O | 0.01 % |
| Total: | 100.26 % |
Geological Setting of Type Material:
A strongly retrograded clinopyroxene-rich layers in the Liset eclogite pod.
Associated Minerals at Type Locality:
Synonyms of Lisetite
Other Language Names for Lisetite
Related Minerals - Strunz-mindat Grouping
| 9.FA. | Bonaccorsiite | KK2Na3(Al6Si36)O84 |
| 9.FA. | Hexacelsian | BaAl2Si2O8 |
| 9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
| 9.FA.05 | Panunzite | (K,Na)AlSiO4 |
| 9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
| 9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
| 9.FA.05 | Trinepheline | NaAlSiO4 |
| 9.FA.05 | Davidsmithite | (Ca,◻)2Na6Al8Si8O32 |
| 9.FA.05 | Kaliophilite | KAlSiO4 |
| 9.FA.05 | Kalsilite | KAlSiO4 |
| 9.FA.05 | 'Carnegieite' | NaAlSiO4 |
| 9.FA.05 | Megakalsilite | KAlSiO4 |
| 9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
| 9.FA.10 | Malinkoite | NaBSiO4 |
| 9.FA.15 | Virgilite | LiAlSi2O6 |
| 9.FA.25 | Lisitsynite | KBSi2O6 |
| 9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
| 9.FA.30 | Buddingtonite | (NH4)(AlSi3O8) |
| 9.FA.30 | Rubicline | Rb(AlSi3O8) |
| 9.FA.30 | 'Monalbite' | NaAlSi3O8 |
| 9.FA.30 | Microcline | K(AlSi3O8) |
| 9.FA.30 va | 'Germanate-celsian' | BaAl2Ge2O8 |
| 9.FA.30 | Celsian | Ba(Al2Si2O8) |
| 9.FA.30 | Sanidine | K(AlSi3O8) |
| 9.FA.30 | Orthoclase | K(AlSi3O8) |
| 9.FA.35 | Reedmergnerite | NaBSi3O8 |
| 9.FA.35 | Albite | Na(AlSi3O8) |
| 9.FA.35 | Anorthite | Ca(Al2Si2O8) |
| 9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
| 9.FA.45 | Svyatoslavite | Ca(Al2Si2O8) |
| 9.FA.45 | Kumdykolite | Na(AlSi3O8) |
| 9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
| 9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
| 9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
| 9.FA.65 | Maleevite | BaB2Si2O8 |
| 9.FA.65 | Pekovite | SrB2Si2O8 |
| 9.FA.65 | Danburite | CaB2Si2O8 |
| 9.FA.70 | Liebermannite | KAlSi3O8 |
| 9.FA.70 | Lingunite | NaAlSi3O8 |
| 9.FA.70 | Stöfflerite | CaAl2Si2O8 |
| 9.FA.75 | Pfaffenbergite | KNa3(Al4Si12)O32 |
| 9.FA.75 | Kokchetavite | K(AlSi3O8) |
Other Information
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 Lisetite
mindat.org URL:
https://www.mindat.org/min-2414.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Lisetite
Reference List:
Smith, David C., Kechid, Sid-Ali, Rossi, Giuseppe (1986) Occurrence and properties of lisetite, CaNa2Al4Si4O16, a new tectosilicate in the system Ca-Na-Al-Si-O. American Mineralogist, 71 (11-12) 1372-1377
Localities for Lisetite
Showing 1 localities.
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.
Norway (TL) | |
| Smith et al. (1986) |
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symbol to view information about a locality.
The
Liset eclogite pod, Liset, Selje, Stad, Vestland, Norway