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PetrifactPotsherdSpheruleSpongoliteArchaeosurfacePetroformMicrospheruleKlerksdorp sphereSpheritePyrospherePotstonePetoskey stoneAstroiteAntholitePetrographyPaleolithGreenstoneCorestoneMarbleCenosphereOstreolithSpheruliteRhabdosphereSparstoneCarstonePetrifactionSparRunestonePetreMeteoroliteCupstoneTurbiniteMicrospheruliteEolithPumice stoneDrystonePetroplinthiteStone ageSpleen stoneTufaArcheomaterialChrysoliteSphaeriteStoneCapsuleSteinkernPalaeoregolithMilioliteSnakestonePseudometeoritePallasiteMicrotephraPitchstoneSpongiolitePhytoliteScrubstoneStromatoliteStarstoneTypolitePhaneritePhrygian stoneMadreporiteTripestonePebbleCorallinitePearlstonePitchAerolithAsterophylliteBurrstonePhilosopher's stoneDendroliteBiolithBrecciaGlobulitePaleosedimentSuberitePeliteLamprophyreGrapestoneChondruleArkoseSpiculariteProtolithPsephiteConcretionShieldPuddingstoneLepisphereDropstoneSpherosideritePsarolitePyrobitumenCrystal stoneBiosparruditeScrew-stonePisolithPeastoneMartian spheruleShell