Rock Identifier

Category

Sedimentary (Man Made Composite)

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

Learn about Sedimentary (Man Made Composite) in the encyclopedia

Opalite

Map Jasper

Conglomerate

Goldstone

Quartzite Sandstone

Quartzite Sandstone

Breccia

Blue Goldstone

Ironstone

Sea Sediment Jasper

Limestone

Claystone

Sandstone

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

Chert / Flint

Silicon Dioxide (SiO2)

Tumbled hematite (Hematite (Fe₂O₃), likely specular or massive hematite) — mineral

Tumbled hematite

Hematite (Fe₂O₃), likely specular or massive hematite

Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Cryptocrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Banded Chert (River Stone) (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert (River Stone)

Silicon Dioxide (SiO2)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Commonly known as Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Commonly known as Flint)

Silicon Dioxide (SiO2)

Chert (Jasper/Common Chert Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Common Chert Pebble)

Microcrystalline Quartz (SiO2)

Fossilized Shell in Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossilized Shell in Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Chert (Yellow Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Green glassy mineral specimen, likely rough emerald or green fluorite (Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph) — mineral

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Chalcedony / milky quartz flake (Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment) — mineral

Chalcedony / milky quartz flake

Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment

Unidentified polished dark gemstone cabochon (Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification) — gemstone

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification

Coquina (Biogenic Limestone (Calcite, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite, CaCO3)

Coquina (Biogenic Limestone (Coquina)) — sedimentary

Coquina

Biogenic Limestone (Coquina)

Sandstone (Sandstone (Quartz-rich Arenite / SiO2)) — sedimentary

Sandstone

Sandstone (Quartz-rich Arenite / SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Bivalve Fossil (Shell Fragment) (Class Bivalvia (Calcium Carbonate - CaCO3)) — sedimentary

Bivalve Fossil (Shell Fragment)

Class Bivalvia (Calcium Carbonate - CaCO3)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Swirled Agate Bead (Silicon Dioxide (SiO2)) — mineral

Swirled Agate Bead

Silicon Dioxide (SiO2)

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

Flint / Chert

Microcrystalline quartz (SiO2)

Coquina (Coquina (Biogenic Limestone / CaCO3)) — sedimentary

Coquina

Coquina (Biogenic Limestone / CaCO3)

Flint (chert) hand axe (Cryptocrystalline silica (SiO₂), worked into a bifacial stone tool) — sedimentary

Flint (chert) hand axe

Cryptocrystalline silica (SiO₂), worked into a bifacial stone tool

Red-and-white jasper/chalcedony pebble (Microcrystalline quartz (SiO₂), likely hematite- or iron-oxide-bearing jasper with white chalcedony/quartz) — mineral

Red-and-white jasper/chalcedony pebble

Microcrystalline quartz (SiO₂), likely hematite- or iron-oxide-bearing jasper with white chalcedony/quartz

Titanium Aura Quartz (Aura Quartz) (Titanium-coated Silicon Dioxide (SiO2)) — mineral

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Larimar (Pectolite) — mineral

Larimar

Pectolite

Small metallic-gold mineral fragment, possibly pyrite (Pyrite (FeS₂), if confirmed) — mineral

Small metallic-gold mineral fragment, possibly pyrite

Pyrite (FeS₂), if confirmed

Blue turquoise cabochon (Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; likely dyed or stabilized, flower-shaped polished piece) — gemstone

Blue turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; likely dyed or stabilized, flower-shaped polished piece

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

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

Chert (Black Chert or Flint)

Silicon Dioxide (SiO2)

Tumbled chalcedony or quartz pebble (Microcrystalline quartz, SiO₂ (likely chalcedony); exact identification is uncertain from the image) — mineral

Tumbled chalcedony or quartz pebble

Microcrystalline quartz, SiO₂ (likely chalcedony); exact identification is uncertain from the image

Chert (often called Flint) (Chert (SiO2)) — sedimentary

Chert (often called Flint)

Chert (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (likely Quartzose Sandstone) (Arenite) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Sandstone (Sedimentary Clastic Rock (Quartzose Sandstone)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartzose Sandstone)

Ferruginous Sandstone (Ironstone) (Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone (Ironstone)

Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone