Probably precipitated from high-aluminum gels on carbonates at pH > 5.8 (Hatrurim Formation, Israel); as weathered crusts on amphiboles and pyroxenes (Dnieper region, Russia); in ba uxites.
IMA Status:
Valid Species (Pre-IMA) 1928
Locality:
In the Hatrurim Formation, Israel. From an undefined area in the Dnieper region, and in the Listvennoye deposit, Yenisei Ridge, Siberia, Russia. Link to MinDat.org Location Data.
Name Origin:
The artificial compound is thought to have been named for the 19th-century German metallurgist Karl J. Bayer; the name was then applied to the natural mineral.
Name Pronunciation:
Bayerite
Synonym:
ICSD 200413
PDF 20-11
Bayerite Crystallography
Axial Ratios:
a:b:c =0.5837:1:0.5435
Cell Dimensions:
a = 5.062, b = 8.671, c = 4.713, Z = 4; beta = 90.27° V = 206.86 Den(Calc)= 2.50
CI meas= 0.089 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.079 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2332,KPDmeas= 0.2304,KC= 0.2531 Ncalc = 1.63 - 1.64
Optical Data:
Biaxial (?), b=1.583
Calculated Properties of Bayerite
Electron Density:
Bulk Density (Electron Density)=2.56 gm/cc note: Specific Gravity of Bayerite =2.50 gm/cc.
Fermion Index:
Fermion Index = 0.0003011748 Boson Index = 0.9996988252
Photoelectric:
PEBayerite = 1.10 barns/electron U=PEBayerite x rElectron Density= 2.82 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bayerite is Not Radioactive
Bayerite Classification
Dana Class:
06.03.02.01(06)Hydroxides and Oxides Containing Hydroxyl
Chemical Formula: 