Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Category
Man Made Rock (Sedimentary Analogue)
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
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Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Red Sandstone
Sandstone (principally Quartz with Iron Oxide coating)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (River Cobble)
Arenite
sedimentary
Quartz (Chert / Agate / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
igneous
Felsic gneiss, likely granitic gneiss
Quartz–feldspar–mica gneiss; commonly quartz + plagioclase/K-feldspar + biotite or hornblende
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Zebra Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Gray Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Agate (Carnelian Agate with Quartz Matrix)
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz Pebble / River Siltstone
Silicon Dioxide (SiO2) / Fine-grained Sedimentary Rock
sedimentary
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Sandstone
Arenite (SiO2 based)
sedimentary
Basalt (potential Glacial Erratic)
Extrusive Mafic Volcanic Rock (Basalt)
igneous
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone (Calcareous/Lithic)
Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)
sedimentary
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Limestone containing marine invertebrate fossils
sedimentary
Fossil Coral
Rugosa or Tabulata / Hexacorallia (replaced with silica or calcite)
fossil
Opal
Hydrated silicon dioxide (SiO2·nH2O)
gemstone
Fossiliferous Chert or Limestone
Sedimentary rock containing fossilized marine invertebrates (likely crinoid stems or bryozoans)
sedimentary
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcite, CaCO3)
sedimentary
Brachiopod Fossil
Phylum Brachiopoda (order potentially Spiriferida)
fossil
Gastropod Fossil (Steinkern)
Class Gastropoda (internal mold)
fossil
Turritella Fossil
Turritella (Class Gastropoda, Family Turritellidae)
fossil
Quartz-veined Siltstone
Siltstone with Quartz (SiO2) veins
sedimentary