Sedimentary (Man Made)

Browse sedimentary (man made) specimens identified by the Rock Identifier community.

Sandstone (likely Arkosic)

Clastic Sedimentary Rock

sedimentary

Diabase (Greenstone)

Diabase (Dolerite)

igneous

Limestone (Grey and White specimens)

Calcium Carbonate (CaCO3)

sedimentary

Sandstone or Limestone

Arenite or Calcareous Sedimentary Rock

Sedimentary

Obsidian (Black)

Obsidian (High-silica volcanic glass)

igneous

Sandstone (Ferruginous)

Arenite (Fe2O3 stained)

sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

sedimentary

Limestone (specifically Dolomitic/Crystalline Limestone)

Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)

sedimentary

Limestone

CaCO3 (Mainly Calcite or Aragonite)

sedimentary

Sandstone (likely Arkosic or Lithic Sandstone)

Arenite (SiO2 based with mineral inclusions)

sedimentary

Sandstone

Arenite

sedimentary

Sandstone

Arenite (Clastic Sedimentary Rock)

sedimentary

Limestone (Micrite/Chalky variety)

Calcium Carbonate (CaCO3)

sedimentary

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Sedimentary Rock

Sandstone (Ferruginous)

Arenite (Fe2O3 rich)

sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

sedimentary

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

sedimentary

Sandstone (likely Fossiliferous)

Arenite / Sedimentum arenaceum

sedimentary

Puddingstone (Jasper Conglomerate)

Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)

Sedimentary

Sandstone

Arenite

sedimentary

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)

Calcite

Mineral

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with iron oxide cement)

sedimentary

Ferruginous Sandstone

Arenite with Hematite/Limonite cement

sedimentary

Shale (Ferruginous)

Laminated Mudrock (Siliciclastic Sedimentary Rock)

sedimentary

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2 with various lithic fragments)

sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

sedimentary

Shale

Fissile mudstone (rich in clay minerals and quartz)

sedimentary

Sandstone (with Iron Oxide staining)

Arenite (primarily SiO2 with Fe2O3 staining)

sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Sedimentary rock