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Stronalsite

A valid IMA mineral species
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About StronalsiteHide

Formula:
Na2SrAl4Si4O16
Colour:
White
Lustre:
Vitreous
Hardness:
Specific Gravity:
2.95
Crystal System:
Orthorhombic
Member of:
Name:
The name reflects its composition: a strontium, sodium (latin "natrium"), aluminium silicate.
Feldspar Group.

Forms a solid-solution series with banalsite


Unique IdentifiersHide

Mindat ID:
3804
Long-form identifier:
mindat:1:1:3804:7
GUID
(UUID V4):
24d7a812-c1da-4f5a-9bdc-0ea4be9b7747

IMA Classification of StronalsiteHide

Classification of StronalsiteHide

9.FA.60

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.6.2

76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.12.1

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
SnsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
SnsThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of StronalsiteHide

Vitreous
Transparency:
Translucent
Colour:
White
Streak:
White
Hardness:
6½ on Mohs scale
Cleavage:
None Observed
Parting:
Rectangular
Density:
2.95 g/cm3 (Measured)    2.95 g/cm3 (Calculated)

Optical Data of StronalsiteHide

Type:
Biaxial (+)
RI values:
nα = 1.563(2) nβ = 1.564 nγ = 1.574(2)
2V:
Measured: 32° , Calculated: 36°
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong

Chemistry of StronalsiteHide

Mindat Formula:
Na2SrAl4Si4O16
Common Impurities:
Ba,Ca,Sr

Crystallography of StronalsiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.415(4) Å, b = 9.901(4) Å, c = 16.729(9) Å
Ratio:
a:b:c = 0.85 : 1 : 1.69
Unit Cell V:
1,393.81 ų (Calculated from Unit Cell)
Z:
4
Comment:
Point Group: 2/m 2/m 2/m or mm2; Space Group: Ibam or Iba2

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006093StronalsiteLiferovich R P, Locock A J, Mitchell R H, Shpachenko A K (2006) The crystal structure of stronalsite and a redetermination of the structure of banalsite The Canadian Mineralogist 44 533-5462006Khibina peralkaline complex, Kola alkaline province, Russia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.204 Å(100)
3.502 Å(80)
2.881 Å(70)
3.183 Å(50)
2.067 Å(50)
3.765 Å(40)
3.069 Å(40)

Geological EnvironmentHide

Type Occurrence of StronalsiteHide

General Appearance of Type Material:
Aggregates of anhedral crystals reaching 1 mm across.
Place of Conservation of Type Material:
National Science Museum, Tokyo, Japan.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 160484.
Geological Setting of Type Material:
Veinlets in xenoliths in serpentine.
Associated Minerals at Type Locality:
Reference:
Hori, H., Nakai, I., Nagashima, K., Matsurbara, S., Kato, A. (1987) Stronalsite, SrNa2Al4Si4O16, a new mineral from Rendai, Kochi City Japan. Mineralogical Journal: 13: 368-375.

Synonyms of StronalsiteHide

Other Language Names for StronalsiteHide

Relationship of Stronalsite to other SpeciesHide

Member of:
Other Members of this group:
Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
CelsianBa(Al2Si2O8)Mon. 2/m
CleavelanditeNa(AlSi3O8)Tric.
FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m
HexacelsianBaAl2Si2O8Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
ParacelsianBa(Al2Si2O8)Mon. 2/m : P21/b
Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
ReedmergneriteNaBSi3O8Tric. 1 : P1
SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
SvyatoslaviteCa(Al2Si2O8)Mon. 2 : P21
Unnamed (New Ordered Member of the Alkali Feldspar Series)KNa(Si6Al2)O16Mon. m
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Stronalsite associated with JadeiteNa(Al,Fe3+)Si2O6
2 photos of Stronalsite associated with FabrièsiteNa3Al3Si3O12 · 2H2O
2 photos of Stronalsite associated with TrinephelineNaAlSiO4
2 photos of Stronalsite associated with ChromojadeiteNa(Al,Cr)Si2O6
2 photos of Stronalsite associated with NephelineNa3K(Al4Si4O16)
2 photos of Stronalsite associated with BanalsiteNa2BaAl4Si4O16
2 photos of Stronalsite associated with AlbiteNa(AlSi3O8)
2 photos of Stronalsite associated with NatroliteNa2Al2Si3O10 · 2H2O

Related Minerals - Strunz-mindat GroupingHide

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.05KaliophiliteKAlSiO4Trig. 3 : P3
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.05TrikalsiliteK2NaAl3(SiO4)3Hex. 6 : P63
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05CarnegieiteNaAlSiO4Tric.
9.FA.05 vaGermanate-nepheline(Na,K)AlGeO4
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.05TrinephelineNaAlSiO4 Hex. 6 : P61
9.FA.05Davidsmithite(Ca,◻)2Na6Al8Si8O32Hex. 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.30Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
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)Mon. 2/m : B2/m
9.FA.30 vaGermanate-celsianBaAl2Ge2O8
9.FA.30MonalbiteNaAlSi3O8Mon. 2/m : B2/m
9.FA.30FerrisanidineK[Fe3+Si3O8]Mon. 2/m : B2/m
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.35ReedmergneriteNaBSi3O8Tric. 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.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
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.70StöffleriteCaAl2Si2O8Tet. 4/m : I4/m
9.FA.70Lingunite(Na,Ca)AlSi3O8Tet. 4/m : I4/m
9.FA.70LiebermanniteKAlSi3O8Tet. 4/m : I4/m
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc

Fluorescence of StronalsiteHide

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 StronalsiteHide

References for StronalsiteHide

Reference List:

Localities for StronalsiteHide

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.
Canada
 
  • Ontario
    • Thunder Bay District
      • Killala Lake Area
Finland
 
  • Lapland
    • Ranua
Japan (TL)
 
  • Kochi Prefecture
    • Kochi City
      • Rendai
  • Niigata Prefecture
  • Okayama Prefecture
    • Niimi City
Myanmar
 
  • Kachin State
    • Mohnyin District
      • Hpakant Township (Hpakan; Phakant; Phakan)
        • Hpakant-Tawmaw Jade Tract
Norway
 
  • Troms og Finnmark
    • Karlsøy
  • Vestfold og Telemark
    • Skien
Russia
 
  • Buryatia
    • Baunt District
      • Vitim Plateau
  • Irkutsk Oblast
  • Murmansk Oblast
    • Turii Cape
South Africa
 
  • North West
    • Bojanala Platinum District Municipality
      • Moses Kotane Local Municipality
Spain
 
  • Canary Islands
    • Las Palmas Province
      • Fuerteventura
 
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