Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Category
Man Made Rock (Sedimentary Analogue)
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
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Jasper
Silicon Dioxide (Quartz variety, SiO2)
mineral
Sandstone (Quartzose)
Sandstone (composed primarily of Quartz: SiO2)
sedimentary
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Fossiliferous Limestone
Autochthonous Biogenic Sedimentary Rock (CaCO3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Stromatolite
Biogenic Sedimentary Rock (Lithified microbial mat)
sedimentary
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Sandstone with Hematite staining
Arenite with Fe2O3 inclusions
sedimentary
Shale with Coprolite influence
Argillaceous sedimentary rock (Shale/Mudstone)
sedimentary
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Dalmation Stone
Peralkaline Rock (SiO2 with Arfvedsonite)
igneous
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Conglomerate
Conglomerate rock
sedimentary
Weathered sandstone cobble
Quartz-rich sandstone, primarily SiO₂ with clay/iron-oxide cement
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-oxide enriched)
sedimentary
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Red Sandstone
Arenite (SiO2 with Fe2O3)
sedimentary
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (composed primarily of SiO2 with various lithic fragments)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Ferruginous Sandstone Pebble
Iron-rich Clastic Sedimentary Rock
sedimentary
Clear Quartz (Rock Crystal) Bracelet
Silicon Dioxide (SiO2)
gemstone
Sandstone (with Feldspathic/Arkose qualities)
Arenite (primarily SiO2 with KAlSi3O8 components)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Chert (specifically brown Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Chalcedony (Carnelian / Agate Pebbles)
Silicon Dioxide (SiO2)
mineral
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
River Stone (likely Andesite or Siltstone)
Intermediate Volcanic Rock / Fine-grained Sedimentary Rock
igneous
River Rock (Basalt or Sandstone)
Clastic Sedimentary Rock or Extrusive Mafic Igneous Rock
igneous or sedimentary
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Chert (Limonite-stained)
Microcrystalline Quartz (SiO2) with iron oxides
sedimentary