Nordstrandite (original) (raw)
A valid IMA mineral species - grandfathered
About NordstranditeHide
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Colour:
colorless, coral pink and reddish brown
Specific Gravity:
2.43 - 2.436
Name:
For Robert A. Van Nordstrand (Feb. 17, 1918 - Feb. 6, 2000 San Rafael Marin County California, USA), Sinclair Research Laboratories, Harvey, Illinois, USA, who synthesized the compound in 1956, later named for him, then transferred to the natural mineral.
This page provides mineralogical data about Nordstrandite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2930:4
7da6548b-ad2d-49ec-aea6-34fa30e772bc
IMA Classification of NordstranditeHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of NordstranditeHide
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4.FE.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
6.3.3.1
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.6.6
7 : Oxides and Hydroxides
6 : Oxides of Al
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Nsd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Nsd | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of NordstranditeHide
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Transparency:
Transparent, Opaque
Comment:
pearly on cleavage
Colour:
Colorless, coral pink and reddish brown
Comment:
Reddish brown due to included goethite
Cleavage:
Perfect
basal {110}
Density:
2.43 - 2.436 g/cm3 (Measured) 2.45 g/cm3 (Calculated)
Optical Data of NordstranditeHide
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RI values:
_n_α = 1.580(4) _n_β = 1.580(4) _n_γ = 1.596(4)
2V:
Measured: 24° , Calculated: 44°
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
r < v moderate
Chemistry of NordstranditeHide
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Crystallography of NordstranditeHide
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Cell Parameters:
a = 5.08 Å, b = 5.12 Å, c = 4.98 Å
α = 93.67°, β = 118.92°, γ = 70.27°
Ratio:
a:b:c = 0.992 : 1 : 0.973
Unit Cell V:
105.94 ų (Calculated from Unit Cell)
Morphology:
thick tabular crystals.
Comment:
Non-standard unit-cell setting
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009375 | Nordstrandite | Bosmans H J (1970) Unit cell and crystal structure of nordstrandite, Al(OH)3 Acta Crystallographica B26 649-652 |  |
1970 | synthetic | 0 | 293 |
| 0014701 | Nordstrandite | Saalfeld H, Jarchow O (1968) Die Kristallstruktur von Nordstrandit, Al(OH)3 Neues Jahrbuch fur Mineralogie, Abhandlungen 109 185-191 | 1968 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.789 Å | (100) |
| 4.322 Å | (12) |
| 4.207 Å | (10) |
| 2.392 Å | (9) |
| 2.263 Å | (15) |
| 2.016 Å | (8) |
| 1.9008 Å | (8) |
Geological EnvironmentHide
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Geological Setting:
karsts
Type Occurrence of NordstranditeHide
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Place of Conservation of Type Material:
Royal Ontario Museum, Toronto, Canada, M145608; Harvard University, Cambridge, Massachusetts, 108353; National Museum of Natural History, Washington, D.C., USA, 117275, 145608.
Geological Setting of Type Material:
Synonyms of NordstranditeHide
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Other Language Names for NordstranditeHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for NordstranditeHide
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References for NordstranditeHide
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Localities for NordstranditeHide
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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.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.