>> Is there an official mimetype for orgmode files?
> 
> In `mailcap-mime-extensions' there is a value `(".org"   . "text/x-org")'.
> 
> Maybe that is for Org-Mode.

It is :)
https://lists.gnu.org/archive/html/emacs-orgmode/2011-01/msg00977.html <https://lists.gnu.org/archive/html/emacs-orgmode/2011-01/msg00977.html>

If official would mean registered with IANA, then it’s not.
https://www.iana.org/assignments/media-types/media-types.xhtml <https://www.iana.org/assignments/media-types/media-types.xhtml>

Link regards
Mario
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