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