Sandstone (with vugs)
Arenite / Sedimentary Sandstone
sedimentary
Category
Anthropogenic (Man Made Material Mimicking Sedimentary Rock)
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
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Sandstone (Fossiliferous)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide staining (Fe2O3)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Chert (Flint / Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Schist
Mica Schist (Metamorphic Rock)
metamorphic
Limestone
Sedimentary Rock (Primarily CaCO3)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (Red Sandstone)
Arenite (SiO2 based with Fe2O3 staining)
sedimentary
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Sandstone
Sandstone (lithified sand)
sedimentary
Carnelian (Polished Agate/Jasper)
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chert / Flint
Silicon dioxide (SiO2)
sedimentary
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (Secondary classification based on grain size)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂), commonly colored by iron oxides
mineral
Likely chlorite-bearing schist (possibly greenschist)
Chlorite–quartz–mica schist; commonly contains muscovite/biotite and feldspar
metamorphic
Sandstone (with potential fossil inclusions)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Ammonite Fossil
Ammonoidea
fossil
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions
sedimentary/mineral
Chert (Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Mineral within a Sedimentary Rock
Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Sandstone
Arenite (SiO2 principal)
sedimentary
Fossil Coral (Rugose Coral Fragment)
Rugosa (extinct order of solitary and colonial corals)
sedimentary
Gastropod Fossil
Class Gastropoda (fossilized)
fossil
Sandstone (River Cobble)
Sandstone (primarily composed of silica, SiO2)
sedimentary
Jasper and Epidote in Quartzite
Metamorphic rock containing microcrystalline quartz, epidote, and jasper
metamorphic
Sandstone
Arenite (predominantly SiO2)
sedimentary
Crazy Lace Agate
Microcrystalline Quartz (SiO2)
sedimentary
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)
Sandstone (with Iron Staining)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary