Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Bayerite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Al(OH)3
System:
Monoclinic
Colour:
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.
This page provides mineralogical data about Bayerite.

Classification of Bayerite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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
6.3.2.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.6.5

7 : Oxides and Hydroxides
6 : Oxides of Al
mindat.org URL:
http://www.mindat.org/min-580.html
Please feel free to link to this page.

Type Occurrence of Bayerite

Geological Setting of Type Material:
Precipitates from high-aluminium gels at pH values above 5.8
Associated Minerals at Type Locality:

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:
2.53 g/cm3 (Measured)    2.54 g/cm3 (Calculated)

Crystallography of Bayerite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
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 Data:
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
Max Birefringence:
δ = 0.015
Image 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
Essential elements:
All elements listed in formula:
Analytical Data:
No chemical analysis appears to have been published.

Relationship of Bayerite to other Species

4.FE.05Amakinite(Fe2+,Mg)(OH)2
4.FE.05BruciteMg(OH)2
4.FE.05PortlanditeCa(OH)2
4.FE.05PyrochroiteMn(OH)2
4.FE.05TheophrastiteNi(OH)2
4.FE.10DoyleiteAl(OH)3
4.FE.10GibbsiteAl(OH)3
4.FE.10NordstranditeAl(OH)3
4.FE.15BöhmiteAlO(OH)
4.FE.15Lepidocrociteγ-Fe3+O(OH)
4.FE.20GrimaldiiteCrO(OH)
4.FE.20HeterogeniteCoO(OH)
4.FE.25FeitknechtiteMn3+O(OH)
4.FE.25Lithiophorite(Al,Li)MnO2(OH)2
4.FE.30QuenselitePbMnO2(OH)
4.FE.35FerrihydriteFe103+O14(OH)2
4.FE.40FeroxyhyteFe3+O(OH)
4.FE.40Vernadite(Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O
4.FE.45QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
7.6.1CorundumAl2O3
7.6.2BöhmiteAlO(OH)
7.6.2DiasporeAlO(OH)
7.6.4GibbsiteAl(OH)3
7.6.6NordstranditeAl(OH)3
7.6.7DoyleiteAl(OH)3
7.6.8Akdalaite4Al2O3 · H2O

Other Names for Bayerite

Name in Other Languages:
German:Bayerit
Simplified Chinese:与拜三水铝石
拜铝石
Spanish:Bayerita

Other Information

Health Risks:
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

Localities for Bayerite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • 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
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 8, 2015 01:11:13 Page generated: July 6, 2015 17:20:25