I had a requirement to display document icons inside a Data View Web Part. While googling I found some interesting information on this document types and there icons.
SharePoint has a pre populated list of document types along with respective images that maps to it. This document type to document icon image mapping can be found inside the file DOCICON.XML which can be located in the following location C:Program FilesCommon FilesMicrosoft SharedWeb Server Extensions14TEMPLATEXML
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