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.
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
Chemical Formula: 
