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Keilhauite

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Big Photo

Khan Mine, Arandis, Swakopmund District, Erongo Region, Namibia
© 2008 Peter Cristofono




Formula:
(CaTi,Al
 
2
,Fe
3+
2
,Y
3+
2
)SiO
 
5
Name:
The name is for the Norwegian geologist Prof. Baltazar Mathias Keilhau (1797-1858). First found by Weibye in 1841 and sent by him to A. Erdmann who analyzed and first described it. The same mineral was independently described as yttrotitanite by Scheerer (1844).
A variety of Titanite

A rare-earth bearing Titanite with up to 10% Y2O3.
Originally described from Buø, Tromøysund, Arendal, Aust-Agder, Norway by Erdmann (1844).

Classification of Keilhauite

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Chemical Properties of Keilhauite

Formula:
(CaTi,Al
 
2
,Fe
3+
2
,Y
3+
2
)SiO
 
5
Essential elements:Ca, O, Si, Ti
All elements listed in formula:Al, Ca, Fe, O, Si, Ti, Y

Other Names for Keilhauite

Other Languages:
German:Keilhauit
Spanish:Keilhauita

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 Keilhauite

Reference List:

- +
- Erdmann, A. (1844): Undersökning af et nytt, Ytterjords- och Titansyrehaltigt Mineral från Buö, i trakten af Arendal i Norrige. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 355-361
- Scheerer, T. (1844): Yttro-Titanit, eine neue mineralspecies. Annalen der Physik und Chemie (herausgegeben zu Berlin von J.C. Poggendorff), 63: 459-462
- Weibye, P. C. (1848): Beiträge zur topograpischen Mineralologie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde. 22: 465-544

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    • Localities for Keilhauite

    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.
    Hide Locality List
    (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.
    Japan
     
    • Honshu Island
      • Tohoku Region
        • Iwate Prefecture
          • Tono City
            • Miyamori
    		Dr. Yohachiro Okamoto collection (curated at Geological Survey museum, Japan)
    Namibia
     
    • Erongo Region
      • Swakopmund District
        • Arandis
    		Harvard Museum no. 89494
    Norway
     
    • Aust-Agder
      • Arendal
        • Tromøysund
    		 Erdmann, A. (1844): Undersökning af et nytt, Ytterjords- och Titansyrehaltigt Mineral från Buö, i trakten af Arendal i Norrige. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 355-361
    USA
     
    • Rhode Island
      • Providence Co.
        • Johnston
    		George, Gilbert (1972). Latest Finds at Rhode Island Road Cuts(Micromounters of New England no. 17, Feb. 1972).
    AmMin 23:149
    www.minsocam.org/ammin/AM23/AM23_149.pdf.
        • South Kingstown
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