There is no direct function to do so. The Locations are stored in different XML files (e.g. Favourites.xml). Hence you can copy them from there, and the recipient would have to insert it there.
Most sat nav co-ordinates are stored as degrees and decimals. However in the Navigator 'favourite.xml' they are in 'milliarcseconds'. To convert to the former divide milliarcseconds by 3600000 (60x60x1000)