It seems that using shorthand rather than a lexical form for decimal coordinates breaks (xsd schema) validation of the munged/split wikibase turtle dumps. Example:
wdv:d0a7604c8ae9777857887ac4f1807286 a wikibase:GlobecoordinateValue ; wikibase:geoLatitude 30.12684 ; wikibase:geoLongitude 120.25657 ; a wikibase:GeoAutoPrecision ; wikibase:geoPrecision 0.00027777777777778 ; wikibase:geoGlobe wd:Q2 .
This is a problem for loading this data into Virtuoso, and possibly other triple stores. The geodata decimals are serialized in lexical form if requested directly from wikibase, however.