Rock Identifier

Category

Sedimentary (Chemical)

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

Learn about Sedimentary (Chemical) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

Bituminous Shale

Bituminous Shale

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Limestone (Weathered) (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone (Weathered)

Sedimentary Carbonate Rock (CaCO3)

Blue apatite (likely dyed or enhanced) (Apatite group; fluorapatite, Ca5(PO4)3F, is the common blue variety) — mineral

Blue apatite (likely dyed or enhanced)

Apatite group; fluorapatite, Ca5(PO4)3F, is the common blue variety

Chert (Arrowhead artifact) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Arrowhead artifact)

Chert (Cryptocrystalline Silica, SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Flint (Cryptocrystalline quartz (SiO2)) — sedimentary

Flint

Cryptocrystalline quartz (SiO2)

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

Chert / Flint (Arrowhead Artifact)

Microcrystalline quartz (SiO2)

Flint / Chert (Fossiliferous) (Silicon dioxide (SiO2) with microcrystalline quartz) — sedimentary

Flint / Chert (Fossiliferous)

Silicon dioxide (SiO2) with microcrystalline quartz

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

Chert (Flint)

Silicon Dioxide (SiO2)

Limestone (or Calcite Pebble) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (or Calcite Pebble)

Calcium Carbonate (CaCO3)

Chert (Jasper/Flint variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variant)

Microcrystalline Quartz (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Limestone (Micritic) (Sedimentary rock mainly composed of Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Micritic)

Sedimentary rock mainly composed of Calcium Carbonate (CaCO3)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Arrowhead/Projectile Point) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Arrowhead/Projectile Point)

Microcrystalline quartz (SiO2)

Limestone (Sedimentary Rock (Primarily CaCO3)) — sedimentary

Limestone

Sedimentary Rock (Primarily CaCO3)

Blue Apatite (Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Small yellow mineral specimen, possibly sulfur (Unidentified; native sulfur (S) is a possibility) — mineral

Small yellow mineral specimen, possibly sulfur

Unidentified; native sulfur (S) is a possibility

Limestone (Sedimentary Rock (Primarily CaCO3)) — sedimentary

Limestone

Sedimentary Rock (Primarily CaCO3)

Flint (Sedimentary cryptocrystalline quartz (SiO2)) — sedimentary

Flint

Sedimentary cryptocrystalline quartz (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky/Clear Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear Variety)

Silicon Dioxide (SiO2)

Coal (Bituminous or Anthracite) (Carbonaceous Sedimentary Rock) — sedimentary

Coal (Bituminous or Anthracite)

Carbonaceous Sedimentary Rock

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Generic Pebble / Small Rock Fragment (Lithic fragment / Weathered rock particle) — sedimentary

Generic Pebble / Small Rock Fragment

Lithic fragment / Weathered rock particle

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

Bauxite (Concretionary)

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

Chert (with Iron Staining) (Silicon Dioxide (SiO2)) — sedimentary

Chert (with Iron Staining)

Silicon Dioxide (SiO2)

Chert (specifically Gray/Blue-Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray/Blue-Gray Chert)

Chert (SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

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

Chert / Flint Pebble

Microcrystalline quartz (SiO2)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Chert (Beach Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Beach Pebble)

Microcrystalline Quartz (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Pyrite (likely), “fool’s gold” (Pyrite, FeS₂ (iron disulfide)) — mineral

Pyrite (likely), “fool’s gold”

Pyrite, FeS₂ (iron disulfide)

Coal (Bituminous / Anthracite) (Carbonaceous Sedimentary Rock (C)) — sedimentary

Coal (Bituminous / Anthracite)

Carbonaceous Sedimentary Rock (C)

Limestone (Sedimentary Calcite (CaCO3)) — sedimentary

Limestone

Sedimentary Calcite (CaCO3)

Small quartz-rich pebble or rock fragment (Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions) — mineral

Small quartz-rich pebble or rock fragment

Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions