Mineralogy Database

Nordstrandite Mineral Data

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General Nordstrandite Information

Help on Chemical  Formula: Chemical Formula: Al(OH)3
Help on Composition: Composition: Molecular Weight = 78.00 gm
   Aluminum  34.59 %  Al   65.36 % Al2O3
   Hydrogen   3.88 %  H    34.64 % H2O
   Oxygen    61.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(OH)3
Help on Environment: Environment: Weathering product of bauxitic soils derived from limestone. Vein or fissure-filling material in dolomitic oil shale. Alteration product of aluminum carbonate minerals. Late-stage m ineral in nepheline syenite pegmatites
Help on IMA Status: IMA Status: Approved IMA 1958
Help on Locality: Locality: Gunony Kapor, near Bau, Sarawak, Malaysia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for R. A. van Nordstrand (1817-), Sinclair Research Laboratories, who first synthesized the compound.
Help on Name Pronunciation: Name Pronunciation: Nordstrandite + Pronunciation Say NORDSTRANDITE
Help on Synonym: Synonym: ICSD 24466
  PDF 24-6

Nordstrandite Image

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Comments: Large pale brownish crystals of nordstrandite.
Location: BÃĪrenstein Quarry, Niederschlag, Oberwiesenthal, Erzgebirge, Saxony, Germany. Scale: Picture size 35 mm.
© Thomas Witzke / Abraxas-Verlag

Nordstrandite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8863:1:0.7315
Help on Cell Dimensions: Cell Dimensions: a = 6.148, b = 6.936, c = 5.074, Z = 4; alpha = 95.76°, beta = 99.06°, gamma = 83.3° V = 211.14 Den(Calc)= 2.45
Help on Crystal System: Crystal System: Triclinic - Pedial H-M Symbol (1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.78(1), 2.26(0.4), 2.39(0.4),

Physical Properties of Nordstrandite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Beige, Colorless, Light brown, Light green, Pink.
Help on Density: Density: 2.42
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Nordstrandite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.039 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.051 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2401,KPDmeas= 0.2431,KC= 0.2531
Ncalc = 1.61 - 1.62
Help on Optical Data: Optical Data: Biaxial (+), a=1.58, b=1.583, g=1.602, bire=0.0220, 2V(Calc)=44, 2V(Meas)=24. Dispersion r < v moderate.

Calculated Properties of Nordstrandite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.48 gm/cc
note: Specific Gravity of Nordstrandite =2.42 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003011748
Boson Index = 0.9996988252
Help on Photoelectric: Photoelectric: PENordstrandite = 1.10 barns/electron
U=PENordstrandite x rElectron Density= 2.73 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nordstrandite is Not Radioactive

Nordstrandite Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.03)Dana Group Nordstrandite Al(OH)3 P1 1
Help on  Strunz Class: Strunz Class: 04.FE.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
04.FE.10 Bayerite Al(OH)3 P 21/a 2/m
04.FE.10 Doyleite Al(OH)3 P1 1
04.FE.10 Gibbsite Al(OH)3 P 21/n 2/m
04.FE.10 Nordstrandite Al(OH)3 P1 1

Other Nordstrandite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Nordstrandite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 04.FE.10





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