GeoBlacklight-Schema

https://github.com/geoblacklight/geoblacklight-schema

GeoBlacklight-Schema focuses on discovery use cases for patrons and analysts in a research library setting, although it is likely useful in other settings. Text search, faceted search and refinement, and spatial search and relevancy are among the primary features that the schema enables. The schema design supports a variety of discovery applications and GIS data types. We especially wanted to provide for contextual collection-oriented discovery applications as well as traditional portal applications.

The source code for the Solr implementation and the design document are on Github:

http://github.com/geoblacklight/geoblacklight-schema

The schema is also discussed in detail in a code4lib journal article here:

A Metadata Schema for Geospatial Resource Discovery Use Cases