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Monalbite

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Formula:
NaAlSi3O8
Crystal System:
Monoclinic
Name:
In allusion to the crystal system, MONoclinic, and its relationship to Albite.
A polymorph of albite with monoclinic symmetry that is stable under equilibrium conditions at temperatures (about 980-1060° C), near the melting point.


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Unique IdentifiersHide

Mindat ID:
34160
Long-form identifier:
mindat:1:1:34160:2

Classification of MonalbiteHide

Strunz-mindat (2025):
9.FA.30

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

Chemistry of MonalbiteHide

Mindat Formula:
NaAlSi3O8
Element Weights:
Element% weight
O48.812 %
Si32.132 %
Al10.290 %
Na8.767 %

Calculated from ideal end-member formula.
Elements listed:
Al, Na, O, Si - search for minerals with similar chemistry

Crystallography of MonalbiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m

Other Language Names for MonalbiteHide

Related Minerals - Strunz-mindat GroupingHide

9.FA.BonaccorsiiteKK2Na3(Al6Si36)O84Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.FA.HexacelsianBaAl2Si2O8Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.FA.Wodegongjieite KCa3(Al7Si9)O32Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.FA.05Panunzite(K,Na)AlSiO4Hex. 6 : P63
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05NephelineNa3K(Al4Si4O16)Hex. 6 : P63
9.FA.05TrinephelineNaAlSiO4 Hex. 6 : P61
9.FA.05Davidsmithite(Ca,◻)2Na6Al8Si8O32Hex. 6 : P63
9.FA.05KaliophiliteKAlSiO4Trig. 3 : P3
9.FA.05KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
9.FA.05CarnegieiteNaAlSiO4Tric.
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.05TrikalsiliteK2NaAl3(SiO4)3Hex. 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.30FerrisanidineK[Fe3+Si3O8]Mon. 2/m : B2/m
9.FA.30Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
9.FA.30RubiclineRb(AlSi3O8)Mon. 2/m : B2/m
9.FA.30MicroclineK(AlSi3O8)Tric. 1
9.FA.30 vaGermanate-celsianBaAl2Ge2O8
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
9.FA.30SanidineK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
9.FA.35ReedmergneriteNaBSi3O8Tric. 1 : P1
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.40ParacelsianBa(Al2Si2O8)Mon. 2/m : P21/b
9.FA.45SvyatoslaviteCa(Al2Si2O8)Mon. 2 : P21
9.FA.45KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
9.FA.50SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
9.FA.55LisetiteCaNa2Al4Si4O16Orth. mm2
9.FA.60StronalsiteNa2SrAl4Si4O16Orth.
9.FA.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
9.FA.65MaleeviteBaB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.65PekoviteSrB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.65DanburiteCaB2Si2O8Orth. mmm (2/m 2/m 2/m)
9.FA.70LiebermanniteKAlSi3O8Tet. 4/m : I4/m
9.FA.70LinguniteNaAlSi3O8Tet. 4/m : I4/m
9.FA.70StöffleriteCaAl2Si2O8Tet. 4/m : I4/m
9.FA.75PfaffenbergiteKNa3(Al4Si12)O32Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc

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.

Internet Links for MonalbiteHide

References for MonalbiteHide

Localities for MonalbiteHide

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 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Anhui
    • Anqing
      • Qianshan City
Earth and Planetary Science Letters et al. (2004)
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