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Banalsite

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Formula:
BaNa2[Al2Si2O8]2
System:
Orthorhombic
Colour:
White
Hardness:
6
Member of:
Name:
The name is derived from the chemical symbols of the elements in its composition: barium (Ba), sodium (Na), Aluminum (Al) and silicon (Si).
Feldspar Group.

Forms a solid-solution series with stronalsite


Classification of Banalsite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
8/J.07-100
9.FA.60

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.6.1

76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.12.8

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn
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First Recorded Occurrence of Banalsite

Year of Discovery:
1944

Physical Properties of Banalsite

Colour:
White
Streak:
White
Hardness (Mohs):
6
Cleavage:
Distinct/Good

Crystallography of Banalsite

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.49Å, b = 9.98Å, c = 16.75Å
Ratio:
a:b:c = 0.851 : 1 : 1.678
Unit Cell Volume:
V 1,419.23 ų (Calculated from Unit Cell)

Optical Data of Banalsite

Type:
Biaxial (+)
RI values:
nα = 1.570 nβ = 1.571 nγ = 1.578
2V:
Measured: 41° , Calculated: 52°
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v

Chemical Properties of Banalsite

Formula:
BaNa2[Al2Si2O8]2
Essential elements:
All elements listed in formula:
Common Impurities:
Mn,Mg,Ca,K

Relationship of Banalsite to other Species

Series:
Forms a series with Stronalsite (see here)
Member of:
Other Members of Group:
AlbiteNaAlSi3O8
Amazonite
Andesine(Na,Ca)[Al(Si,Al)Si2O8]
AnorthiteCaAl2Si2O8
Anorthoclase(Na,K)AlSi3O8
Buddingtonite(NH4)AlSi3O8
Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
CelsianBaAl2Si2O8
DmisteinbergiteCaAl2Si2O8
Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
MicroclineKAlSi3O8
Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
OrthoclaseKAlSi3O8
ParacelsianBaAl2Si2O8
ReedmergneriteNa[BSi3O8]
SanidineKAlSi3O8
Slawsonite(Sr,Ca)Al2Si2O8
StronalsiteSrNa2[Al2Si2O8]2
SvyatoslaviteCaAl2Si2O8
9.FA.05KaliophiliteKAlSiO4
9.FA.05KalsiliteKAlSiO4
9.FA.05Nepheline(Na,K)AlSiO4
9.FA.05Panunzite(K,Na)AlSiO4
9.FA.05Trikalsilite(K,Na)AlSiO4
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]
9.FA.05MegakalsiliteKAlSiO4
9.FA.10MalinkoiteNaBSiO4
9.FA.15VirgiliteLiAlSi2O6
9.FA.25LisitsyniteKBSi2O6
9.FA.30AdulariaKAlSi3O8
9.FA.30Anorthoclase(Na,K)AlSi3O8
9.FA.30Buddingtonite(NH4)AlSi3O8
9.FA.30CelsianBaAl2Si2O8
9.FA.30Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
9.FA.30MicroclineKAlSi3O8
9.FA.30OrthoclaseKAlSi3O8
9.FA.30SanidineKAlSi3O8
9.FA.30Rubicline(Rb,K)AlSi3O8
9.FA.30MonalbiteNaAlSi3O8
9.FA.35AlbiteNaAlSi3O8
9.FA.35Andesine(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35AnorthiteCaAl2Si2O8
9.FA.35Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35ReedmergneriteNa[BSi3O8]
9.FA.40ParacelsianBaAl2Si2O8
9.FA.45SvyatoslaviteCaAl2Si2O8
9.FA.45KumdykoliteNaAlSi3O8
9.FA.50Slawsonite(Sr,Ca)Al2Si2O8
9.FA.55LisetiteCaNa2Al4Si4O16
9.FA.60StronalsiteSrNa2[Al2Si2O8]2
9.FA.65DanburiteCaB2Si2O8
9.FA.65MaleeviteBaB2Si2O8
9.FA.65PekoviteSrB2Si2O8
9.FA.70Lingunite(Na,Ca)AlSi3O8
9.FA.75KokchetaviteKAlSi3O8
16.12.1StronalsiteSrNa2[Al2Si2O8]2
16.12.2Slawsonite(Sr,Ca)Al2Si2O8
16.12.3Brewsterite
16.12.4CelsianBaAl2Si2O8
16.12.5ParacelsianBaAl2Si2O8
16.12.6CymriteBaAl2Si2(O,OH)8 · H2O
16.12.7EdingtoniteBa[Al2Si3O10] · 4H2O
16.12.9Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
16.12.10Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
16.12.11BalipholiteBaLiMg2Al3(Si2O6)2(OH)4
16.12.12ArmeniteBaCa2Al6Si9O30 · 2H2O
16.12.13Wellsite(Ba,Ca,K2)Al2Si6O16 · 6H2O
16.12.14Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O
16.12.15Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2
16.12.16Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
16.12.17SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
16.12.18Minehillite(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16
16.12.19HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
16.12.20Baileychlore(Zn,Fe,Al,Mg)6((Si,Al)4O10)(OH)8

Other Names for Banalsite

Name in Other Languages:
German:Banalsit
Spanish:Banalsita

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.

References for Banalsite

Reference List:
American Mineralogist: 30: 85.

Mineralogical Journal: 7: 262-281.

Internet Links for Banalsite

Localities for Banalsite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Burma (Myanmar)
 
  • Kachin State
    • Mohnyin District (Moe Hnyin District)
      • Hpakant Township (Hpakan; Phakant; Phakan)
Shi, G., Harlow, G.E., Wang, J. Wang, J., Ng, E., Wang, X., Cao, G. & Cui, W. (2012): Mineralogy of jadeitite and related rocks from Myanmar:a review with new data. Eur. J. Mineral. 24, 345–370
Ferraris, C., Parodi, G.C., Pont, S., Rondeau, B., Lorand, J.-P. (2014): Trinepheline and fabriesite: two new mineral species from the jadeite deposit of Tawmaw (Myanmar). European Journal of Mineralogy, 26, (in press).
Canada
 
  • British Columbia
    • Golden Mining Division
Mark Mauthner Collection (Personally Collected)
  • Ontario
    • Thunder Bay District
      • Killala Lake Area
The Canadian Mineralogist Vol. 44, pp. 929-942 (2006)
Finland
 
  • Northern Finland Region
    • Ranua
Mutanen, T. 2011. Alkalikiviä ja appiniitteja. Raportti hankkeen " Magmatismi ja malminmuodostus II" toiminnasta 2002-2005.
Guatemala
 
  • Motagua Valley
Mikhail Ostrooumov and Alfredo Victoria Morales (2010) Mexican jadeite-bearing rock: a first mineralogical and gemmological approach. The Journal of Gemmology, Vol. 32, No. 1–4.
Japan
 
  • Honshu Island
    • Kanto Region
      • Tokyo Metropolis
        • Nishi-Tama-gun
          • Okutama-cho
Tokyo University collection; Alfredo Petrov collection; Matsubara S, Miyawaki R, Yokoyama K, Shimizu M, Imai H (2004) Tokyoite, Ba2Mn3+(VO4)2(OH), a new mineral from the Shiromaru mine, Okutama, Tokyo, Japan. Journal of Mineralogical and Petrological Sciences 99, 363-367
Norway
 
  • Troms
    • Ringvassøy
Bøe, P. (2000): En gang av alkaline bergarter i Mikkelvik, Ringvassøy i Troms. Norsk Bergverksmuseum Skrift. 17, 71-79
Russia
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
P.M. Kartashov data; The Canadian Mineralogist Vol. 44, pp. 929-942 (2006)
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
Mikhailova, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Ivanyuk, G.Y., Men’shikov, Y.P., and Pakhomovsky, Y.A. (2007): Geology of Ore Deposits 49(7), 590-598.
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
South Africa
 
  • North West Province
    • Bojanala Platinum District
      • Western Bushveld Complex
The Canadian Mineralogist, V 42, 2004, pp. 1169-1178.
  • Northern Cape Province
Cairncross/Dixon, 1995. Minerals of South Africa
Minerals of South Africa
Sweden
 
  • Värmland
    • Filipstad
Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
  • Västmanland
    • Hällefors
      • Grythyttan
Ulf Nyberg photo & specimen
UK
 
  • Wales
    • Gwynedd (Caernarvonshire)
      • Lleyn Peninsula
        • Llanfaelrhys
          • Rhiw
Min.Mag.(1944) 27, 33-48; UK Journal of mines & Minerals, number 29 pp47-48
USA
 
  • California
    • San Benito Co.
      • Diablo Range
        • New Idria District
          • San Benito River headwaters area
            • Dallas Gem Mine area
              • Santa Rita Peak
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 362.
Mineral and/or Locality  
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