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Fahlunite

Formula:
(Mg,Fe)Al
 
2
Si
 
3
O
 
10
·2H
 
2
O


An alteration product of cordierite (compare also pinite).

Originally described from Falu mine, Falun, Dalarna, Sweden.

Classification of Fahlunite

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Chemical Properties of Fahlunite

Formula:
(Mg,Fe)Al
 
2
Si
 
3
O
 
10
·2H
 
2
O
Essential elements:Al, H, Mg, O, Si
All elements listed in formula:Al, Fe, H, Mg, O, Si

Other Names for Fahlunite

Synonyms:
Fahlunite (of Hisinger)Falunite
Other Languages:
German:Fahlunit
Falunit
Spanish:Fahlunita
Falunita

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.

Internet Links for Fahlunite

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    Localities for Fahlunite

    Hide Locality List
    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.
    Austria
     
    • Carinthia
      • Völkermarkt
        • Bleiburg
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    Sweden
     
    • Dalarna
      • Falun
    		No reference listed
    USA
     
    • Arkansas
    		Jay Ellis Ransom,1974, Gems and Minerals of America
    • Connecticut
      • Middlesex Co.
        • Haddam
    		Foye, W. G. (1922): Mineral Localities in the Vicinity of Middletown, Connecticut. (American Mineralogist 7:4-12)
    • Washington
      • Snohomish Co.
        • Sultan District
          • Sultan Basin
    		http://www.pnwfm.org/newsletters/PNWFM_newsletter_0409.pdf
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 22nd Nov 2009 09:05:05