Albite Mineral Data + 
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- 76.1.3.0 Plagioclase* (Na,Ca)(Si,Al)4O8 C1 1
- 76.1.3.1 Albite NaAlSi3O8 C1 1
- 76.1.3.2 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1
- 76.1.3.3 Andesine* (Na,Ca)(Si,Al)4O8 C1 1
- 76.1.3.4 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1
- 76.1.3.5 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1
- 76.1.3.6 Anorthite CaAl2Si2O8 P1,I1 1
- VIII/J.07-10 Anorthoclase (Na,K)AlSi3O8 C1 1
- VIII/J.07-20 Albite NaAlSi3O8 C1 1
- VIII/J.07-30 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1
- VIII/J.07-40 Andesine* (Na,Ca)(Si,Al)4O8 C1 1
- VIII/J.07-50 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1
- VIII/J.07-60 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1
- VIII/J.07-70 Anorthite CaAl2Si2O8 P1,I1 1
- VIII/J.07-75 Dmisteinbergite CaAl2Si2O8 P 6/mmm 6/m 2/m 2/m
- VIII/J.07-80 Svyatoslavite CaAl2Si2O8 P 21 2
- VIII/J.07-90 Stronalsite SrNa2Al4Si4O16 I bam,Iba2 Ortho
- VIII/J.07-100 Banalsite BaNa2Al4Si4O16 I bam 2/m 2/m 2/m
- VIII/J.07-110 Filatovite! K[(Al,Zn)2(As,Si)2O8] I2/c 2/m
General Albite Information |
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 Chemical Formula: |
NaAlSi3O8 | ||
| Composition: |
Molecular Weight = 263.02 gm | ||
| Sodium 8.30 % Na 11.19 % Na2O | |||
| Calcium 0.76 % Ca 1.07 % CaO | |||
| Aluminum 10.77 % Al 20.35 % Al2O3 | |||
| Silicon 31.50 % Si 67.39 % SiO2 | |||
| Oxygen 48.66 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na0.95Ca0.05Al1.05Si2.95O8 | ||
| Environment: |
Magmatic and pegmatitic rocks. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1815 | ||
| Locality: |
USA, VA, Amelia. Bourg d'Oisans and Isere, France. Link to MinDat.org Location Data. | ||
| Name Origin: |
From the Latin, albus, in allusion to the common color. | ||
| Synonym: |
Ab100 | ||
| An0 | |||
| Clevelandite | |||
Albite Image | |||
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Albite Crystallography |
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| Axial Ratios: |
a:b:c =0.6368:1:0.5599 | ||
| Cell Dimensions: |
a = 8.144, b = 12.787, c = 7.16, Z = 4; alpha = 94.266°, beta = 116.583°, gamma = 87.667° V = 664.40 Den(Calc)= 2.63 | ||
| Crystal System: |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: C1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.176(1), 3.211(0.3), 3.752(0.3), | ||
| Forms:
Mouse |
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Crystal Structure:
Mouse |
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Physical Properties of Albite |
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| Cleavage: |
[001] Perfect, [010] Good | ||
| Color: |
White, Gray, Greenish gray, Bluish green, Gray. | ||
| Density: |
2.61 - 2.63, Average = 2.62 | ||
| Diaphaniety: |
Transparent to translucent to subtranslucent | ||
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
| Habit: |
Blocky - Crystal shape tends to be equant (e.g. feldspars). | ||
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. | ||
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. | ||
| Hardness: |
7 - Quartz | ||
| Luminescence: |
None. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Albite |
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| Gladstone-Dale: |
CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2034,KPDmeas= 0.2042,KC= 0.2058 |
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| Optical Data: |
Biaxial (+), a=1.528-1.533, b=1.5317-1.53685, g=1.538-1.542, bire=0.0090-0.0100, 2V(Calc)=76-82, 2V(Meas)=45. Dispersion relatively weak. | ||
| Pleochroism (x): |
colorless. | ||
| Pleochroism (y): |
colorless. | ||
| Pleochroism (z): |
colorless. | ||
Calculated Properties of Albite |
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| Electron Density: |
relectron=2.60 gm/cc |
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| Fermion Index |
Fermion Index = 0.01495 Boson Index = 0.98505 |
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| Photoelectric: |
PEAlbite = 1.75 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Albite is Not Radioactive |
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Albite Classification |
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| Dana Class: |
76.1.3.1 (76)Tectosilicate Al-Si Framework | ||
| (76.1)with Al-Si frameworks | |||
| (76.1.3)Plagioclase series | |||
| Strunz Class: |
VIII/J.07-20 VIII - Silicates | ||
| VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders | |||
| VIII/J.07 - Feldspar group, Anorthoclase - Anorthite - Banalcite series | |||
Other Albite Information |
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| References: |
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | ||
| See Also: |
Links to other databases for Albite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Dunn) 10 - Franklin Minerals(Palache) 11 -Google Images 12 -Google Scholar 13 -Handbook of Mineralogy (MinSocAm) 14 -Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 -MinDAT 17 -MinMax(Deutsch) 18 -MinMax(English) 19 - Mineral and Gemstone Kingdom 20 -Mineralienatlas (Deutsch) 21 - Philatelic Mineralogy 22 -QUT Mineral Atlas 23 - Scandinavian mineral gallery 24 - UCLA - Petrography Thin-Sections 25 - WWW-MINCRYST 26 -École des Mines de Paris Search for Albite using: Visit our Advertisers for Albite : Translate Albite Mineral Data : Ask about Albite here : Print or Cut-and-Paste your Albite Specimen Label here :
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