Sandstone (River Cobble)
Sandstone (primarily composed of silica, SiO2)
sedimentary
Category
Sedimentary
Browse sedimentary specimens identified by the Rock Identifier community.
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Chert
Microcrystalline Quartz (SiO2)
sedimentary
Limestone (with possible Manganese oxide inclusions)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 dominated)
sedimentary
Sandstone
Arenite
sedimentary
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Sandstone nugget
Arenite (primarily Quartz SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
igneous
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone (with potential iron mineralization)
Arenite
sedimentary
Chert (River Siltstone/Quartzite)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Silica (SiO2)
sedimentary
Chert (Jasper variation)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Chert (or Flint)
SiO2 (Microcrystalline Quartz)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Quartzose)
Arenite
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (likely Siltstone)
Arenite or Siltstone (high SiO2 content)
sedimentary
Chert (Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper / Chert (Red)
Cryptocrystalline quartz (SiO2)
Sedimentary / Mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
White Buffalo Turquoise (or Howlite/Magnesite)
Calcite/Dolomite or Magnesite with Chert/Quartz inclusions
gemstone
Satin Spar (Selenite variant)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral