General Nordstrandite Information Chemical Formula: |
Al(OH)3 |
Composition: |
Molecular Weight = 78.00 gm |
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Aluminum 34.59 % Al 65.36 % Al2O3 |
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Hydrogen 3.88 % H 34.64 % H2O |
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Oxygen 61.53 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Al(OH)3 |
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 |
IMA Status: |
Approved IMA 1958 |
Locality: |
Gunony Kapor, near Bau, Sarawak, Malaysia. Link to MinDat.org Location Data. |
Name Origin: |
Named for R. A. van Nordstrand (1817-), Sinclair Research Laboratories, who first synthesized the compound. |
Name Pronunciation: |
Nordstrandite + Pronunciation |
Synonym: |
ICSD 24466 |
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PDF 24-6 |
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Images:
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Nordstrandite Crystallography Axial Ratios: |
a:b:c =0.8863:1:0.7315 |
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 |
Crystal System: |
Triclinic - PedialH-M Symbol (1) Space Group: P1 |
X Ray Diffraction: |
By Intensity(I/Io): 4.78(1), 2.26(0.4), 2.39(0.4), |
Crystal Structure:
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Mouse
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| Physical Properties of Nordstrandite Cleavage: |
{110} Perfect |
Color: |
Beige, Colorless, Light brown, Light green, Pink. |
Density: |
2.42 |
Diaphaneity: |
Transparent |
Hardness: |
3 - Calcite |
Luster: |
Vitreous - Pearly |
Streak: |
white |
| Optical Properties of Nordstrandite 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 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 Electron Density: |
Bulk Density (Electron Density)=2.48 gm/cc |
note: Specific Gravity of Nordstrandite =2.42 gm/cc. Fermion Index: |
Fermion Index = 0.0003011748 |
Boson Index = 0.9996988252 Photoelectric: |
PENordstrandite = 1.10 barns/electron |
U=PENordstrandite x rElectron Density= 2.73 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Nordstrandite is Not Radioactive | Nordstrandite Classification Dana Class: |
06.03.03.01 (06)Hydroxides and Oxides Containing Hydroxyl |
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(06.03)with (OH)3 or (OH)6 groups |
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(06.03.03)Dana Group |
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Strunz Class: |
04.FE.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra |
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| Other Nordstrandite Information References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
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 17 - WWW-MINCRYST Search for Nordstrandite using: Visit our Advertisers for Nordstrandite : A Bijoux Google Search for NordstranditeAdam's Minerals Google Search for Nordstrandite Cape Minerals Google Search for Nordstrandite Dakota Matrix Minerals Google Search for Nordstrandite Excalibur Mineral Corp. Google Search for Nordstrandite Exceptional Minerals Google Search for Nordstrandite John Betts Fine Minerals Search for Nordstrandite McDougall Minerals Google Search for Nordstrandite Mineral News Website Link Rock and Mineral Shows Google Search for Nordstrandite Weinrich Minerals, Inc. Google Search for Nordstrandite Ask about Nordstrandite here : Print or Cut-and-Paste your Nordstrandite Specimen Label here :
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