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Albite

This page kindly sponsored by Norman King
Formula:
NaAlSi3O8
System:
Triclinic
Colour:
White to grey, bluish, ...
Lustre:
Vitreous
Hardness:
6 - 6½
Member of:
Name:
Named in 1815 by Johan Gottlieb Gahn and Jöns Jacob Berzelius from Latin "albus", white, alluding to its usual color.
Feldspar Group.

Na-rich end member of the Albite-Anorthite Series.

Low- and high-temperature structural modifications exist ('low albite' and 'high albite'), with ordered and disordered Al-Si distribution, respectively.

Visit gemdat.org for gemological information about Albite.


Classification of Albite

Approved, 'Grandfathered' (first described prior to 1959)
9.FA.35

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
Dana 7th ed.:
76.1.3.1
76.1.3.1

76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.2.1

16 : Silicates Containing Aluminum and other Metals
2 : Aluminosilicates of Na

Physical Properties of Albite

Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Comment:
Pearly on cleavages
Colour:
White to grey, bluish, greenish, reddish
Comment:
may be chatoyant
Streak:
White
Hardness (Mohs):
6 - 6½
Tenacity:
Brittle
Cleavage:
Perfect
on [001], good on [010], imperfect on {110}
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.6 - 2.65 g/cm3 (Measured)    2.615(6) g/cm3 (Calculated)

Optical Data of Albite

Type:
Biaxial (+)
RI values:
nα = 1.528 - 1.533 nβ = 1.532 - 1.537 nγ = 1.538 - 1.542
2V:
Measured: 45° , Calculated: 76° to 82°
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v weak
Comments:
Biaxial - for high variety.

Chemical Properties of Albite

IMA Formula:
NaAlSi3O8
Elements listed in formula:
Common Impurities:
Ca,K,Mg

Crystallography of Albite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 8.16 Å, b = 12.87 Å, c = 7.11 Å
α = 93.45°, β = 116.4°, γ = 90.28°
Ratio:
a:b:c = 0.634 : 1 : 0.552
Unit Cell Volume:
V 667.19 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals commonly tabular parallel {010} (thin plates to blocky crystals), may be curved, to 3 cm; divergent aggregates, granular, cleavable massive.
Twinning:
Common around [010] or perpendicular {010}, giving polysynthetic striae on 001 or {010}; many other laws, contact, simple and multiple.
Comment:
High and low forms; both are described in the non-standard space-group C-1 (chosen by convention to facilitate comparison with C-centred monoclinic orthoclase and sanidine). The reduced cell is: a = 7.158, b = 7.438, c = 7.713 Å, α = 115.068, β = 107.321, γ = 107.321° (cell from Armbruster et al., 1990).

Crystallographic forms of Albite

Crystal Atlas:
Image Loading
Click on an icon to view
Albite no.78 - Goldschmidt (1913-1926)
Albite no.80 - Goldschmidt (1913-1926)
Albite no.256 - Goldschmidt (1913-1926)
Albite no.267 - Goldschmidt (1913-1926)
Albite no.309 - Goldschmidt (1913-1926)
Albite - {110}, {010}, {1-11}, modified
3d models and HTML5 code kindly provided by www.smorf.nl.

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Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

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Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Occurrences of Albite

Type Occurrence of Albite

Relationship of Albite to other Species

Series:
Forms a series with Anorthite (see here)
Member of:
Other Members of Group:
AmazoniteK(AlSi3O8)
Andesine(Na,Ca)[Al(Si,Al)Si2O8]
AnorthiteCa(Al2Si2O8)
Anorthoclase(Na,K)AlSi3O8
BanalsiteNa2BaAl4Si4O16
Buddingtonite(NH4)(AlSi3)O8
Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
CelsianBa(Al2Si2O8)
DmisteinbergiteCa(Al2Si2O8)
FilatoviteK(Al,Zn)2(As,Si)2O8
HexacelsianBaAl2Si2O8
Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
KokchetaviteK(AlSi3O8)
KumdykoliteNa(AlSi3O8)
Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
MicroclineK(AlSi3O8)
Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
OrthoclaseK(AlSi3O8)
ParacelsianBa(Al2Si2O8)
ReedmergneriteNaBSi3O8
RubiclineRb(AlSi3O8)
SanidineK(AlSi3O8)
SlawsoniteSr(Al2Si2O8)
StronalsiteNa2SrAl4Si4O16
SunstoneA variety of feldspar (microcline or oligoclase) that has schiller, commonly with an orange/brown background color, ...
SvyatoslaviteCa(Al2Si2O8)
9.FA.05KaliophiliteKAlSiO4
9.FA.05KalsiliteKAlSiO4
9.FA.05NephelineNaAlSiO4
9.FA.05PanunziteK3Na(AlSiO4)4
9.FA.05TrikalsiliteK2NaAl3(SiO4)3
9.FA.05YoshiokaiteCa1-x(Al,Si)2O4
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)4O8
9.FA.30MicroclineKAlSi3O8
9.FA.30OrthoclaseKAlSi3O8
9.FA.30SanidineKAlSi3O8
9.FA.30RubiclineRbAlSi3O8
9.FA.30MonalbiteNaAlSi3O8
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.35ReedmergneriteNaBSi3O8
9.FA.40ParacelsianBaAl2Si2O8
9.FA.45SvyatoslaviteCaAl2Si2O8
9.FA.45KumdykoliteNaAlSi3O8
9.FA.50SlawsoniteSrAl2Si2O8
9.FA.55LisetiteNa2CaAl4(SiO4)4
9.FA.60BanalsiteNa2BaAl4Si4O16
9.FA.60StronalsiteNa2SrAl4Si4O16
9.FA.65DanburiteCaB2Si2O8
9.FA.65MaleeviteBaB2Si2O8
9.FA.65PekoviteSrB2Si2O8
9.FA.70LinguniteNaAlSi3O8
9.FA.75KokchetaviteKAlSi3O8
16.2.2AnalcimeNaAlSi2O6 · H2O
16.2.3UssingiteNa2AlSi3O8(OH)
16.2.4ParagoniteNaAl2(Si3Al)O10(OH)2
16.2.5NatroliteNa2(Si3Al2)O10 · 2H2O
16.2.6Tetranatrolite
16.2.7ParanatroliteNa2(Si3Al2)O10 · 3H2O
16.2.8EphesiteNaLiAl2(Si2Al2)O10(OH)2
16.2.9Rectorite(Na,Ca)Al4(Si,Al)8O20(OH)4 · 2H2O
16.2.10JadeiteNaAlSi2O6
16.2.11Brammallite(Na,H3O)(Al,Mg,Fe)2((Si,Al)4O10)(OH)2

Other Names for Albite

Name in Other Languages:
Bosnian (Latin Script):Albit
Croatian:Albit
Czech:Albit
Dutch:Albiet
Esperanto:Albito
Estonian:Albiit
Finnish:Albiitti
French:Albite
Hebrew:אלביט
Hungarian:Albit
Italian:Albite
Japanese:曹長石
Latvian:Albīts
Lithuanian:Albitas
Norwegian (Bokmål):Albitt
Polish:Albit
Portuguese:Albita
Russian:Альбит
Serbian (Cyrillic Script):Албит
Simplified Chinese:钠长石
Slovak:Albit
Slovenian:Albit
Swedish:Albit
Turkish:Albit
Ukrainian:Альбіт

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.

Albite in petrology

An essential component of (items highlighted in red)
Common component of (items highlighted in red)

References for Albite

Reference List:
Rose. G. (1823) Über den Feldspat, Albit, Labradorit und Anorthit. Annalen der Physik und Chemie: 73/NF-43: 175-208.

Schaller, W.T. (1911) Krystallographische Notizen ueber Albit, Phenakit, und Neptunit: Zeitschr. für Kristallographie, Band 48: 550-558; USGS Bull. 490: 53-56.

MacKenzie, W.S. (1957) The crystalline modifications of NaAlSi3O8. American Journal of Science: 255: 481-516.

Ferguson, R.B., Trail, R.J., Taylor, W.H. (1958) The crystal structure of low-temperature and high-temperature albites. Acta Crystallographica: 11: 331-348.

Smith, J.V., MacKenzie, W.S. (1958) Alkali feldspars. IV. The cooling history of high-temperature sodium-rich feldspars. American Mineralogist: 43: 872-889.

Williams, P.P., Megaw, H.D. (1964) The crystal structure of low and high albites at -180°C. Acta Crystallographica: 17: 882-890.

Crawford, W.A. (1966) Optical properties of metamorphic albite. American Mineralogist: 51: 523-524.

Martin, R.F. (1969) The hydrothermal synthesis of low albite. Contributions to Mineralogy and Petrology. 23: 323-339.

MacKenzie, W.S., Zussman, J., editors (1974) The Feldspars. Manchester University Press, U.K.

Moore, D.E., Liou, J.G. (1979) Chessboard-twinned albite from Franciscan metaconglomerates of the Diablo Range, California. American Mineralogist: 64: 329-336.

Armbruster, T., Buergi, H.B., Kunz, M., Gnos, E., Broenniman, S., Lienert, C. (1990): Variation of displacement parameters in structure refinements of low albite. American Mineralogist 75, 135-140.

Sebastian, A., Lagache, M. (1990) Experimental study of the equilibrium between pollucite, albite, and hydrothermal fluid in pegmatite systems. Mineralogical Magazine: 54: 447-454.

Knoche, R., Dingwell, D.B., Webb, S.L. (1992) Non-linear temperature dependence of liquid volumes in the system albite-anorthite-diopside. Contributions to Mineralogy and Petrology: 111: 61-73.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C. (1995) Handbook of Mineralogy, Volume II. Silica, Silicates. Mineral Data Publishing, Tucson, AZ, 904pp., 2 sub-volumes: 13.

Benusa, M.T., Angel, R.J., Ross, N.L. (2005) Compression of albite, NaAlSi3O8. American Mineralogist: 90: 1115-1120.

Internet Links for Albite

mindat.org URL:
https://www.mindat.org/min-96.html
Please feel free to link to this page.
Specimens:
The following Albite specimens are currently listed for sale on minfind.com.

Significant localities for Albite

Showing 25 significant localities out of 10,628 recorded on mindat.org.

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.
(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.
Canada
 
  • Québec
    • Abitibi-Témiscamingue
      • La Vallée-de-l'Or RCM
        • Réservoir-Dozois
[var: Oligoclase] Age of the Cabonga nepheline syenite, Grenville Province, western Quebec Hudon, Pierre; Friedman, Richard M.; Gauthier, Gilles; Martignole, Jacques Canadian Journal of Earth Sciences, vol. 43, issue 9, pp. 1237-1249
Colombia
 
  • Caldas Department
    • Mun. de Salamina
[var: Andesine] Tassinari, C.C.G., Pinzon, F.D., and Buena Ventura, J. (2008): Ore Geology Reviews 33, 505-518.
Germany
 
  • Lower Saxony
    • Harz
      • St Andreasberg District
        • St Andreasberg
[var: Zygadite] August Breithaupt (1843) Poggendorff Ann. v 69, p. 441
Spain
 
  • Madrid
Garcia G., Gonzalez C., Bueno A. (2004) - Cadalso de los Vidrios (Madrid), Bocamina, n° 14, pp: 12-46.
Sweden (TL)
 
  • Dalarna
    • Falun
Gahn, J.G. & Berzelius, J.J. (1815): Afhandl. Fys. Kem. Min., 4, 180; American Mineralogist (1990) 75, 135.
Switzerland
 
  • Wallis (Valais)
    • Bagnes Valley
      • Verbier
Erik Vercammen photo & specimen (Bought at the Fiesch-show in 2003)
USA
 
  • California
    • San Diego Co.
      • Pala District
        • Pala
          • Chief Mountain
            • Elizabeth R. Mine (Hazel W. claim)
Mauthner, M. H. F. (2008), The Forty-niner Pocket, Oceanview Mine, Pala District, San Diego County, California. Rocks & Minerals 83(4): 292-297.
  • Colorado
    • Gunnison Co.
      • Willow Creek District
[var: Cleavelandite] The Williamson Southern Group National Collection
  • Connecticut
    • Fairfield Co.
      • Redding (Reading)
        • Branchville
[var: Cleavelandite] Cameron et al (1954) USGS Prof Paper 255, Ronald Januzzi collection
      • Trumbull
        • Long Hill
[var: Oligoclase] Harold Moritz collection
    • Litchfield Co.
      • Litchfield
Brunet, William M. (1977). Ilmenite Occurrences In Litchfield, Connecticut. Rocks & Minerals: 52(11): 415-20.
    • Middlesex Co.
      • Haddam
Yedlin, Neal. (1967). The Micromounter. Rocks and Minerals: 42(11): 840-842.
        • Haddam Neck
Mineralogical Magazine 1902 13 : 97-121.; USGS Prof Paper 255; Scovil, Jeffrey A. (1992): Famous Mineral Localities: the Gillette Quarry, Haddam Neck, Connecticut. (Mineralogical Record, 23(1):19-28.)
[var: Oligoclase] Foye, W. G. (1922): Mineral Localities in the Vicinity of Middletown, Connecticut. (American Mineralogist 7:4-12)
      • Portland
        • Collins Hill
          • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
Jenks, William F. (1935): Pegmatites at Collins Hill, Portland, Conn. American Journal of Science: s. 5, 30: 177-197.; Cameron, Eugene N., Larrabee David M., McNair, Andrew H., Page, James T., Stewart, Glenn W., and Shainin, Vincent E. (1954): Pegmatite Investigations 1942-45 New England; USGS Professional Paper 255: 333-338.; Stugard, Frederick, Jr. (1958): Pegmatites of the Middletown Area, Connecticut. USGS Bulletin 1042-Q.
    • Tolland Co.
      • Union
Bartsch, Rudolf C. B. (1940): New England Notes. Rocks & Minerals, vol. 15, no. 8, p. 274.
  • New Mexico
    • Otero Co.
D.Court collection
  • Rhode Island
    • Washington Co.
      • Westerly
        • Bradford
[var: Oligoclase] Miller, C. E. (1971) Rhode Island Minerals and Their Locations, O. D. Hermes, Ed., University of Rhode Island, Kingston
Mineral and/or Locality  
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