Sandstone (Greywacke)
Arenite/Greywacke (SiO2 major)
sedimentary
Category
Sedimentary (Artificial)
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
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Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Pink / Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Green Chalcedony Ring
Silicon Dioxide (SiO2)
gemstone
Generic Pebble
Lithic Fragment
sedimentary
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
White Chalcedony
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Red Calcite
Calcium Carbonate (CaCO3)
mineral
Agate
SiO2 (Chalcedony/Quartz)
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
gemstone
Hematite
Iron Oxide (Fe2O3)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Quartz (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Blue Celestite
Strontium Sulfate (SrSO4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Rhodochrosite
Rhodochrosite, Manganese Carbonate (MnCO3)
mineral
Limonite (Iron Stone/Ocher)
Limonite (FeO(OH)·nH2O)
mineral
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Sulfur (on Matrix)
Native Sulfur (S8)
mineral
Orange Quartz (Tangerine Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Jasper
Silicon dioxide, SiO2
Mineral
Sandstone
Arenite (Sandstone)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)
sedimentary
Sandstone (with potential fossil fragments)
Sandstone (SiO2 dominated with iron oxides)
sedimentary
Shale fragment
Shale (Laminated Mudstone)
sedimentary
Sandstone (Weathered Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Chert (within Limestone)
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Shale
Fossiliferous Mudstone / Shale
sedimentary
Limestone (with crushed gravel)
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary