Mineralogy Database

Andesine Mineral Data

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General Andesine Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca)(Si,Al)4O8
Help on Composition: Composition: Molecular Weight = 268.62 gm
   Sodium     5.14 %  Na    6.92 % Na2O
   Calcium    5.97 %  Ca    8.35 % CaO
   Aluminum  14.06 %  Al   26.57 % Al2O3
   Silicon   27.18 %  Si   58.16 % SiO2
   Oxygen    47.65 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.6Ca0.4Al1.4Si2.6O8
Help on Environment: Environment: Magmatic and metamorphic rocks.
Help on IMA Status: IMA Status: Not Approved IMA 1841
Help on Locality: Locality: Andes Mountains, South America. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Andesine Say ANDESINE
Help on Synonym: Synonym: Ab60

Andesine Image

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  Andesine   Plagioclase

Comments: Translucent andesine crystal twin.
Location: Maeyama Ueda shi, Nagano, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Andesine Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6321:1:0.71
Help on Cell Dimensions: Cell Dimensions: a = 8.155, b = 12.9, c = 9.16, Z = 6; alpha = 93.917°, beta = 116.3333°, gamma = 89.166° V = 861.52 Den(Calc)= 3.11
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: C1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.21(1), 3.18(0.9), 4.04(0.8),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 0 1) ( 1 0 0) ( 1 0 1) ( 0 1 0)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Andesine

Help on Cleavage: Cleavage: {001} Perfect, {010} Good
Help on Color: Color: Colorless, Gray, Yellow green, White.
Help on Density: Density: 2.66 - 2.68, Average = 2.67
Help on Diaphaneity: Diaphaneity: Transparent to Subtransparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 7 - Quartz
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Andesine

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.14 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1777,KPDmeas= 0.207,KC= 0.2067
Ncalc = 1.55 - 1.64
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.543-1.554, b=1.5469-1.5587, g=1.552-1.562, bire=0.0080-0.0090, 2V(Calc)=78-84, 2V(Meas)=76-83. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Andesine

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.65 gm/cc
note: Specific Gravity of Andesine =2.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAndesine = 2.27 barns/electron
U=PEAndesine x rElectron Density= 6.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Andesine is Not Radioactive

Andesine Classification

Help on  Dana Class: Dana Class: (76)Tectosilicate Al-Si Framework
  (76.01)with Al-Si frameworks
  (76.01.03)Plagioclase series Plagioclase* (Na,Ca)(Si,Al)4O8 C1 1 Albite NaAlSi3O8 C1 1 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1 Andesine* (Na,Ca)(Si,Al)4O8 C1 1 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1 Anorthite CaAl2Si2O8 P1,I1 1
Help on  Strunz Class: Strunz Class: 09.FA.35 09 - SILICATES (Germanates)
  09.F - Tektosilicates without Zeolitic H2O
  09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1
09.FA.35 Albite NaAlSi3O8 C1 1
09.FA.35 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1
09.FA.35 Anorthite CaAl2Si2O8 P1,I1 1
09.FA.35 Andesine* (Na,Ca)(Si,Al)4O8 C1 1
09.FA.35 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1
09.FA.35 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1
09.FA.35 Reedmergnerite NaBSi3O8 C1 1
09.FA.35 Plagioclase* (Na,Ca)(Si,Al)4O8 C1 1

Other Andesine Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Andesine :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineral and Gemstone Kingdom
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Scandinavian mineral gallery

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Dana No: Strunz No: 09.FA.35





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