Mime Content Types for office 2007 documents

The Content Type of the office 2007 files are different from the normal office documents. the files are strored and maintained internally as xml formats. While uploading these documents they are uploaded in octet stream[binary stream].
For more details check this link. openxmldeveloper.org

The Content Types of the office 2007 files is listed below.

File Extension	Content Type
docm	application/vnd.ms-word.document.macroEnabled.12
docx	application/vnd.openxmlformats-officedocument.wordprocessingml.document
dotm	application/vnd.ms-word.template.macroEnabled.12
dotx	application/vnd.openxmlformats-officedocument.wordprocessingml.template
ppsm	application/vnd.ms-powerpoint.slideshow.macroEnabled.12
ppsx	application/vnd.openxmlformats-officedocument.presentationml.slideshow
pptm	application/vnd.ms-powerpoint.presentation.macroEnabled.12
pptx	application/vnd.openxmlformats-officedocument.presentationml.presentation
xlsb	application/vnd.ms-excel.sheet.binary.macroEnabled.12
xlsm	application/vnd.ms-excel.sheet.macroEnabled.12
xlsx	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
xps	application/vnd.ms-xpsdocument