Chert (or potentially massive Quartz/Quartzite)
SiO2 (Silicon Dioxide)
sedimentary (if chert) / metamorphic (if quartzite)
Category
Sedimentary (Artificial)
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
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Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Weathered chert or silicified limestone nodule
Microcrystalline quartz (SiO₂), possibly replacing limestone; exact identification requires testing
sedimentary
Red Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Chert Nodules in Limestone / Fault Breccia
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) matrix
sedimentary
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
sedimentary
Red Jasper (River Stone)
Jasper (Silicon Dioxide, SiO2 plus iron oxide inclusions)
sedimentary
Blue Chalcedony
Chalcedony (Silicon Dioxide, SiO2)
mineral
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
mineral
Ironstone pebble
Ironstone (Ferruginous Sedimentary Rock)
sedimentary
Puddingstone (Jasper Conglomerate)
Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)
Sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (Greywacke)
Arenite / Greywacke Sandstone
sedimentary
Sandstone (Quartzose type)
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)
sedimentary
Banded Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Fossilized Ripple Marks or Stromatolite
Sedimentary ripple mark imprint / Biosedimentary structure
fossil
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Coal
Biogenic sedimentary rock (Carbon)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Banded Chert
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Coarse Sandstone Pebble
Clastic Sedimentary Rock (Sandstone)
sedimentary
Conglomerate
Conglomerate
sedimentary
Sandstone with Quartz Vein
Quartzose Sandstone with Hydrothermal Quartz
sedimentary
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Weathered Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Fossil-bearing sedimentary rock, possibly fossil wood or bone
Indeterminate silicified/carbonate fossil in sandstone or mudstone
fossil
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Bivalve Fossil (Clam)
Class Bivalvia, likely Mercenaria or similar genus
fossil
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Apatite
Ca5(PO4)3(F,Cl,OH)
mineral