Rock Identifier

Category

Anthropogenic Sedimentary (Man Made)

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

Learn about Anthropogenic Sedimentary (Man Made) in the encyclopedia

Opalite

Map Jasper

Conglomerate

Goldstone

Quartzite Sandstone

Quartzite Sandstone

Breccia

Blue Goldstone

Ironstone

Limestone

Claystone

Sandstone

Mandarin Garnet

Mandarin Garnet

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert / Flint (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Flint / Chert (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert

Microcrystalline quartz (SiO2)

Chert (specifically Flint or Nodular Chert) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Nodular Chert)

Silicon dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Chalk (Carbonate rock (mainly CaCO3)) — sedimentary

Chalk

Carbonate rock (mainly CaCO3)

Chert (Jasper/Flint var.) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint var.)

Silicon Dioxide (SiO2)

Chert (often called Flint or River Stone) (Microcrystalline alpha-quartz (SiO2)) — sedimentary

Chert (often called Flint or River Stone)

Microcrystalline alpha-quartz (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Natural freshwater pearls (Pearl (nacreous calcium carbonate; chiefly aragonite, CaCO₃)) — gemstone

Natural freshwater pearls

Pearl (nacreous calcium carbonate; chiefly aragonite, CaCO₃)

Chert (specifically Flint) (Chert (SiO2)) — sedimentary

Chert (specifically Flint)

Chert (SiO2)

Diamond (or Diamond Simulant) (Carbon (C)) — mineral

Diamond (or Diamond Simulant)

Carbon (C)

Diamond in Kimberlite (Diamond (C in Kimberlite)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert / Flint (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert / Flint

Cryptocrystalline quartz (SiO2)

Chert (specifically Jasper or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint)

Cryptocrystalline Quartz (SiO2)

Chert (Jasper variation) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Coquina (Bioclastic Limestone (Coquina)) — sedimentary

Coquina

Bioclastic Limestone (Coquina)

Chalk (Calcium carbonate (CaCO3)) — sedimentary

Chalk

Calcium carbonate (CaCO3)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Chert (varieties: Flint or Jasper) (Silicon dioxide (SiO2) / Microcrystalline Quartz) — sedimentary

Chert (varieties: Flint or Jasper)

Silicon dioxide (SiO2) / Microcrystalline Quartz

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Yellow chalcedony (likely polished/tumbled pieces) (Microcrystalline quartz, SiO₂; commonly called yellow jasper or silicified limestone depending on exact texture) — mineral

Yellow chalcedony (likely polished/tumbled pieces)

Microcrystalline quartz, SiO₂; commonly called yellow jasper or silicified limestone depending on exact texture

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Chert (likely jasper/chalcedony-rich chert) (Microcrystalline quartz, SiO₂) — sedimentary

Chert (likely jasper/chalcedony-rich chert)

Microcrystalline quartz, SiO₂

Chert or silicified sedimentary fragment (tentative) (Microcrystalline quartz (SiO₂), possibly silicified limestone or fossil-bearing chert) — sedimentary

Chert or silicified sedimentary fragment (tentative)

Microcrystalline quartz (SiO₂), possibly silicified limestone or fossil-bearing chert

Chert (often called Flint) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Carved Stone Turtle (Carved Soapstone and Quartz) — mineral

Carved Stone Turtle

Carved Soapstone and Quartz

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Flint (Silicon dioxide (SiO2)) — sedimentary

Flint

Silicon dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (specifically Arkose or Quartz Arenite) (Arenite (primarily SiO2 with possible Feldspar)) — sedimentary

Sandstone (specifically Arkose or Quartz Arenite)

Arenite (primarily SiO2 with possible Feldspar)

Green Aventurine (Quartz (SiO2) with Fuchsite inclusions) — Mineral

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Tumbled cream-colored pebble (Likely quartz-rich sandstone or limestone; exact identification requires testing) — sedimentary

Tumbled cream-colored pebble

Likely quartz-rich sandstone or limestone; exact identification requires testing

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Coquina (Bioclastic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (Calcium Carbonate, CaCO3)

Coquina (Biogenic Limestone (mostly Calcium Carbonate, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (mostly Calcium Carbonate, CaCO3)

Diamond (in jewelry setting) (Diamond (C - Carbon)) — mineral

Diamond (in jewelry setting)

Diamond (C - Carbon)