Bayerite Mineral Data + 
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- 6.3.2.1 Bayerite Al(OH)3 P 21/a 2/m
- IV/F.02-10 Gibbsite Al(OH)3 P 21/n 2/m
- IV/F.02-20 Bayerite Al(OH)3 P 21/a 2/m
- IV/F.02-30 Nordstrandite Al(OH)3 P1 1
- IV/F.02-40 Doyleite Al(OH)3 P1 1
General Bayerite Information |
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 Chemical Formula: |
Al(OH)3 | ||
| 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 | |||
| Empirical Formula: |
Al(OH)3 | ||
| Environment: |
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. | ||
| Synonym: |
ICSD 200413 | ||
| PDF 20-11 | |||
Search for Bayerite Images | |||
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Images:
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Bayerite Crystallography |
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| 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 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.222(1), 4.71(0.9), 4.35(0.7), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Bayerite |
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| Color: |
Colorless, White. | ||
| Density: |
2.53 | ||
| Diaphaniety: |
Transparent | ||
| Streak: |
white | ||
Optical Properties of Bayerite |
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| Gladstone-Dale: |
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 |
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| Optical Data: |
Biaxial (?), b=1.583 | ||
Calculated Properties of Bayerite |
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| Electron Density: |
relectron=2.56 gm/cc |
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| Fermion Index |
Fermion Index = 0.0003 Boson Index = 0.9997 |
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| Photoelectric: |
PEBayerite = 1.10 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bayerite is Not Radioactive |
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Bayerite Classification |
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| Dana Class: |
6.3.2.1 (6)Hydroxides and Oxides Containing Hydroxyl | ||
| (6.3)with (OH)3 or (OH)6 groups | |||
| (6.3.2)Dana Group | |||
| Strunz Class: |
IV/F.02-20 IV - Oxides | ||
| IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure | |||
| IV/F.02 - Gibbsite - Doyleite series | |||
Other Bayerite Information |
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Bayerite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Bayerite using: Visit our Advertisers for Bayerite : Translate Bayerite Mineral Data : Ask about Bayerite here : Print or Cut-and-Paste your Bayerite Specimen Label here :
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