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Bayerite

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Löhley (Liley; Meerfeld Quarry; Slabik Quarry; Scheerer Quarry), Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
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Formula:
Al(OH)
 
3
System:MonoclinicColour:White
Name:The artificial compound is thought to have been named for the 19th century German metallurgist Karl J. Bayer (1847-1904). The name was then applied to the natural mineral.
Polymorph of:Doyleite, Gibbsite, Nordstrandite
This page provides mineralogical data about Bayerite.

Classification of Bayerite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/F.02-20
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:6.3.2.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
Hey's CIM Ref.:7.6.5

7 : Oxides and Hydroxides
6 : Oxides of Al
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Type Occurrence of Bayerite

Type Locality:Hatrurim Formation, Negev, Israel
Geological Setting of type material:Precipitates from high-aluminium gels at pH values above 5.8
Associated Minerals at type locality:
VateriteThaumasitePortlanditeGypsumEttringite
Calcite

Occurrences of Bayerite

Geological Setting:In bauxites; as weathered crusts on amphiboles and pyroxenes

Physical Properties of Bayerite

Diaphaneity (Transparency):Transparent, Translucent
Colour:White
Density (measured):2.53 g/cm3
Density (calculated):2.54 g/cm3

Crystallography of Bayerite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m {P1 1 21/m} {P21/m} {P1 21/m 1}
Cell Parameters:a = 5.0626Å, b = 8.6719Å, c = 9.4254Å
β = 90.26°
Ratio:a:b:c = 0.584 : 1 : 1.087
Unit Cell Volume:V 413.79 ų (Calculated from Unit Cell)
Z:8
Morphology:As very fine fibers; also as flaky and tabular crystals, to 0.1 mm; in radiating hemispherical aggregates and crusts
X-Ray Powder Diffraction:
d-spacingIntensity
4.73 (s)
4.36 (ms)
3.19 (w)
2.70 (vw)
2.21 (s)
2.16 (vw)
1.720 (m)
(
Comments:Recorded on type material

Optical Data of Bayerite

Type:Biaxial (+)
RI values: nα = 1.565 - 1.574 nγ = 1.580 - 1.584
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Bayerite

Formula:
Al(OH)
 
3
Simplified for copy/paste:Al(OH)3
Essential elements:Al, H, O
All elements listed in formula:Al, H, O
Analytical Data:No chemical analysis appears to have been published.

Relationship of Bayerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.FE.05Amakinite
(Fe
2+
 
,Mg)(OH)
 
2
4.FE.05Brucite
Mg(OH)
 
2
4.FE.05Portlandite
Ca(OH)
 
2
4.FE.05Pyrochroite
Mn(OH)
 
2
4.FE.05Theophrastite
Ni(OH)
 
2
4.FE.10Doyleite
Al(OH)
 
3
4.FE.10Gibbsite
Al(OH)
 
3
4.FE.10Nordstrandite
Al(OH)
 
3
4.FE.15Böhmite
AlO(OH)
4.FE.15Lepidocrocite
γ-Fe
3+
 
O(OH)
4.FE.20Grimaldiite
CrO(OH)
4.FE.20Heterogenite
CoO(OH)
4.FE.25Feitknechtite
Mn
3+
 
O(OH)
4.FE.25Lithiophorite
(Al,Li)MnO
 
2
(OH)
 
2
4.FE.30Quenselite
PbMnO
 
2
(OH)
4.FE.35Ferrihydrite
Fe
3+
5
O
 
3
(OH)
 
9
4.FE.40Feroxyhyte
Fe
3+
 
O(OH)
4.FE.40Vernadite
(Mn
4+
 
,Fe
3+
 
,Ca,Na)(O,OH)
 
2
· nH
 
2
O
4.FE.45Quetzalcoatlite
Zn
 
6
Cu
 
3
(TeO
 
6
)
 
2
(OH)
 
6
· Ag
 
x
Pb
 
y
Cl
 
x+2y
Related Minerals - Hey's Index Grouping:

- +
7.6.1Corundum
Al
 
2
O
 
3
7.6.2Böhmite
AlO(OH)
7.6.2Diaspore
AlO(OH)
7.6.4Gibbsite
Al(OH)
 
3
7.6.6Nordstrandite
Al(OH)
 
3
7.6.7Doyleite
Al(OH)
 
3
7.6.8Akdalaite
4Al
 
2
O
 
3
· H
 
2
O

Other Names for Bayerite

Other Languages:
German:Bayerit
Russian:Байерит
Simplified Chinese:与拜三水铝石
拜铝石
Spanish:Bayerita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bayerite

Reference List:

- +
Gross, S. and Heller, L. (1963): A natural occurrence of bayerite. Mineralogical Magazine 33, 723-724. - American Mineralogist (1964) 49, 819 (abstract).

Khorosheva, D. P. (1968): Bayerite from the bauxite horizon of the middle Dnieper region. Doklady Acad. Nauk SSSR, 182, 123-126 (in Russian).

Schoen, R. and Roberson, C. E. (1970): Structures of aluminum hydroxide and geochemical implications. American Mineralogist 55, 43-77.

McHardy, W. J. and Thomson, A. P. (1971): Conditions for the formation of bayerite and gibbsite. Mineralogical Magazine 38, 358-368.

Gross, S. (1977): The mineralogy of the Hatrurim Formation, Israel. Geol. Sur. Israel Bull. 70, 14-15.

Zigan, F., Joswig, W. and Burger, N. (1978): Die Wasserstoffpositionen im Bayerit, Al(OH)3. Zeitschrift für Kristallographie 148, 255-273 (in German with English abstract).

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 47.

Internet Links for Bayerite

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  • Raman and XRD data at RRUFF project
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  • Localities for Bayerite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • San Luis
    Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 47
    China
     
    • Guangxi Zhuang Autonomous Region
      • Baise Prefecture
        • Pingguo Co.
    Zhongcao Liang (1983): Geology and Prospecting 19(8), 24-28; Xinyu Cao and Tongjiang Tang (1986): Geology and Prospecting 22(2), 18-23
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Daun
          • Üdersdorf
    Hentschel, G., Die Minerale der Üdersdorfer Lava, Lapis, Weise Verlag, München, 11/1989
    Greece
     
    • Attikí Prefecture (Attica; Attika)
      • Western Attikí District
        • Megara
    Z. Maksimovitch, D.L. Bisch : "Brindleyite, a nickel-rich aluminous serpentinite mineral analogous to berthierine", Amer. Mineralogist, 1978, 63, 484-489"
    Iran
     
    • West Azarbaijan Province (West Azerbaijan Province)
      • Takab (Takan Tepe)
    Daliran, F. (2008): The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran—hydrothermal alteration and mineralisation. Mineralium Deposita, 43, 383-404
    Israel
     
    • Negev
    Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.; Mineralogical Magazine 1963 33 : 723-724.
    New Zealand
     
    • Kermadec Islands
    Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 47
    Russia
     
    • Eastern-Siberian Region
      • Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)
        • Enisei Range (Yenisei Ridge; Enisei Ridge)
    Handbook of Mineralogy
    UK
     
    • England
      • East Sussex
        • Brighton
    [Specimen in the Natural History Museum, London]
    USA
     
    • Nebraska
      • Cedar Co.
    R.M. Joeckel, K.D. Wally, B.J. Ang Clement, P.R. Hanson, J.S. Dillon, S.K. Wilson (2011) Secondary minerals from extrapedogenic per latus acidic weathering environments at geomorphic edges, Eastern Nebraska, USA. CATENA, Volume 85:253-266
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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