Sandstone
Arenite (SiO2 primarily)
sedimentary
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
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Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
igneous
Chert (Limonite-stained)
Microcrystalline Quartz (SiO2) with iron oxides
sedimentary
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Banded Sandstone (Liesegang Rings)
Arenite with Liesegang rings (SiO2/Fe2O3)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide staining (Fe2O3)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Glauconite (Sandstone or Shale)
Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
sedimentary
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Dalmation Stone
Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)
igneous
Sandstone
Arenite
sedimentary
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Sandstone Pebble
Arenite (specifically Lithic or Quartz Arenite)
sedimentary
Sandstone (Micaceous)
Arenite (primarily SiO2 with Phyllosilicates)
sedimentary
Hag Stone (Piddock bored rock)
Calcareous sedimentary rock featuring Pholadidae borings
sedimentary
Sandstone
Clastic Sedimentary Rock (Quartz arenite or similar)
sedimentary
Fossilized Shell in Limestone
Carbonate sedimentary rock with Bivalvia or Brachiopoda remains
fossil
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Chert Nodule)
Microcrystalline quartz (SiO2)
sedimentary
Blue Agate Slice
Chalcedony (SiO2)
gemstone
Polished amber-colored stone, possibly chert or jasper
Uncertain from image; likely microcrystalline quartz (SiO₂) if chert/jasper
mineral
Chert Arrowhead (Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Fluorite Bracelet
Calcium Fluoride (CaF2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
sedimentary
Limestone (Weathered/Silicified)
Sedimentary carbonate rock (primarily CaCO3)
sedimentary
Red Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Fossilized Rugose Coral in Limestone
Order Rugosa in Sedimentary Matrix (CaCO3)
fossil
Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Weathered sandstone or iron-stained siltstone
Quartz-rich clastic sedimentary rock, likely ferruginous sandstone
sedimentary
Howlite
Ca2B5SiO9(OH)5
mineral
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
sedimentary