 GEOROC, NAVDAT, PetDB) in that it incorporates unpublished data in addition to data published in peer-reviewed journals.The vast majority of data collected by metamorphic geologists is not presented in publication, and therefore a forum for sharing this data with the public is an objective of MetPetDB.Contributors to MetPetDB also have the ability to store private data and create projects, or collections of private, public, and published data for sharing and organization.