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 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Bayerite using: Visit our Advertisers for Bayerite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Bayerite Mineral Data : Ask about Bayerite here : Print or Cut-and-Paste your Bayerite Specimen Label here :
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