has quality rock SWEETRealm:Rock https://en.wikipedia.org/wiki/Rock TGN:21444 Geonames:T.RK From https://en.wikipedia.org/wiki/ [A mineral] is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate, especially with respect to the requirement a valid species be abiogenic, and to a lesser extent with regards to it having an ordered atomic structure. EcoLexicon:rock FTT:1010 FTT:145 Geonames:T.RKS A rock is a naturally occurring solid aggregate of one or more minerals or mineraloids. mineral material solid environmental material hard