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Trikalsilite

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Formula:
(K,Na)AlSiO4
Colour:
Colourless
Lustre:
Vitreous
Hardness:
6
Crystal System:
Hexagonal
Name:
From Greek, "tria", three, because the length of its a-axis is triple that of its dimorph Kalsilite.
This page provides mineralogical data about Trikalsilite.


Hide all sections | Show all sections

Classification of TrikalsiliteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.FA.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.2.1.3

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
16.4.3

16 : Silicates Containing Aluminum and other Metals
4 : Aluminosilicates of Na and K

Physical Properties of TrikalsiliteHide

Vitreous
Transparency:
Translucent
Colour:
Colourless
Hardness:

Chemical Properties of TrikalsiliteHide

Formula:
(K,Na)AlSiO4
IMA Formula:
K2NaAl3(SiO4)3

Crystallography of TrikalsiliteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 15.339(4) Å, c = 8.501(2) Å
Ratio:
a:c = 1 : 0.554
Unit Cell V:
1,732.19 ų (Calculated from Unit Cell)
Z:
18

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.269 Å(35)
3.932 Å(30)
3.384 Å(25)
3.076 Å(100)
3.050 Å(95)
2.558 Å(45)
2.410 Å(35)

Type Occurrence of TrikalsiliteHide

General Appearance of Type Material:
Fine-grained, in parallel intergrowth with nepheline and kalsilite.
Geological Setting of Type Material:
In potassic lava.

Other Language Names for TrikalsiliteHide

Relationship of Trikalsilite to other SpeciesHide

Other Members of this group:
Cancrinite GroupA large, structurally complex group of alumosilicates.
CarnegieiteNaAlSiO4Tric.
Davidsmithite(Ca,□)2Na6Al8Si8O32Hex. 6 : P63
KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
LeuciteK(AlSi2O6)Tet. 4/m : I41/a
MetaleuciteA name for isometric leucite that is stable above 625 degrees C.
NephelineNa3K(Al4Si4O16)Hex. 6 : P63
Sodalite GroupThe Sodalite Group is characterised by sodalite-type stacking of alumosilicate building units that produces ...
TrinephelineNaAlSiO4Hex. 6 : P61
Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3

Related Minerals - Nickel-Strunz GroupingHide

9.FA.05KaliophiliteKAlSiO4Hex.
9.FA.05KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
9.FA.05NephelineNa3K(Al4Si4O16)Hex. 6 : P63
9.FA.05Panunzite(K,Na)AlSiO4Hex. 6 : P63
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.10MalinkoiteNaBSiO4Hex. 6 : P63
9.FA.15VirgiliteLiAlSi2O6Hex. 6 2 2 : P62 2 2
9.FA.25LisitsyniteKBSi2O6Orth. 2 2 2 : P2 2 2
9.FA.30AdulariaKAlSi3O8Mon.
9.FA.30Anorthoclase(Na,K)AlSi3O8Tric.
9.FA.30Buddingtonite(NH4)(AlSi3)O8Mon. 2 : P21
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
9.FA.30Hyalophane(K,Ba)[Al(Si,Al)Si2O8]Mon.
9.FA.30MicroclineK(AlSi3O8)Tric. 1
9.FA.30OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30SanidineK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30RubiclineRb(AlSi3O8)Tric.
9.FA.30MonalbiteNaAlSi3O8Mon. 2/m : B2/m
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35Andesine(Na,Ca)[Al(Si,Al)Si2O8]Tric.
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.35Bytownite(Ca,Na)[Al(Al,Si)Si2O8]Tric.
9.FA.35Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35ReedmergneriteNaBSi3O8Tric.
9.FA.40ParacelsianBa(Al2Si2O8)Mon.
9.FA.45SvyatoslaviteCa(Al2Si2O8)Orth.
9.FA.45KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
9.FA.50SlawsoniteSr(Al2Si2O8)Mon.
9.FA.55LisetiteCaNa2Al4Si4O16Orth.
9.FA.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
9.FA.60StronalsiteNa2SrAl4Si4O16Orth.
9.FA.65DanburiteCaB2Si2O8Orth. mmm (2/m 2/m 2/m)
9.FA.65MaleeviteBaB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.65PekoviteSrB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.70Lingunite(Na,Ca)AlSi3O8Tet. 4/m : I4/m
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm

Related Minerals - Dana Grouping (8th Ed.)Hide

76.2.1.1KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
76.2.1.2NephelineNa3K(Al4Si4O16)Hex. 6 : P63
76.2.1.4Panunzite(K,Na)AlSiO4Hex. 6 : P63
76.2.1.5KaliophiliteKAlSiO4Hex.
76.2.1.6Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.4.1NephelineNa3K(Al4Si4O16)Hex. 6 : P63
16.4.2Panunzite(K,Na)AlSiO4Hex. 6 : P63
16.4.4Anorthoclase(Na,K)AlSi3O8Tric.
16.4.5Naujakasite(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26Mon. 2/m : B2/m
16.4.6Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TrikalsiliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sahama T.G., Smith J.V. (1957) Tri-kalsilite, a new mineral. American Mineralogist, 42, 286.
Bonaccorsi E., Merlino S., Pasero M. (1988), Trikalsilite: its structural relationships with nepheline and tetrakalsilite. Neues Jahrbuch für Mineralogie, Monatshefte (1988): (12): 559-567.

Internet Links for TrikalsiliteHide

Localities for TrikalsiliteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Jujuy Province
    • Rinconada Department
Ian Graham, Stephen Harris, Laure Martin, Angela Lay, William Powell, Elena Belousova, Eduardo Zappettini (2018) Unusual alluvial sapphires from Orosmayo, Argentina: a multi-analytical approach to decipher their
DR Congo (TL)
 
  • North Kivu
    • Nyiragongo Territory
      • Nyiragongo Volcano
Sahama T G, Smith J V (1957) Notes and news: Tri-kalsilite, a new mineral. American Mineralogist 42, 286-286
 
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