Rock Identifier

Category

Antropogenic Rock (Man Made)

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

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Arenite (variable SiO2 composition)) — sedimentary

Sandstone

Arenite (variable SiO2 composition)

Chalk (Carbonate rock (mainly CaCO3)) — sedimentary

Chalk

Carbonate rock (mainly CaCO3)

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

Bivalve Fossil (Shell Fragment)

Class Bivalvia (Calcium Carbonate - CaCO3)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Cullet Glass (Strawberry Glass) (Amorphous Silicon Dioxide (SiO2) with metallic dopants) — Mineraloid (Synthetic/Man-made)

Cullet Glass (Strawberry Glass)

Amorphous Silicon Dioxide (SiO2) with metallic dopants

Mineraloid (Synthetic/Man-made)

Nickel coin (U.S. currency) (Cupronickel (75% Copper, 25% Nickel alloy)) — man-made alloy (metallic)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

man-made alloy (metallic)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Quartzose) (Clastic sedimentary rock (SiO2 primary)) — sedimentary

Sandstone (likely Quartzose)

Clastic sedimentary rock (SiO2 primary)

Granodiorite with Quartz Veining (Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins) — igneous

Granodiorite with Quartz Veining

Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins

Snowflake Obsidian (Volcanic glass with Cristobalite inclusions (70–75% SiO2)) — igneous

Snowflake Obsidian

Volcanic glass with Cristobalite inclusions (70–75% SiO2)

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)

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)

Goldstone (Synthetic Aventurescence Glass) (Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)) — mineraloid / man-made material

Goldstone (Synthetic Aventurescence Glass)

Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)

mineraloid / man-made material

Granite (Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)) — igneous

Granite

Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Lapis Lazuli (Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2) — Metamorphic rock

Lapis Lazuli

Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Metamorphic rock

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartz Arenite) (Sandstone (dominated by SiO2 quartz grains)) — sedimentary

Sandstone (Quartz Arenite)

Sandstone (dominated by SiO2 quartz grains)

Granite (Granite (Phaneritic Quartz-Feldspar intrusive rock)) — Igneous

Granite

Granite (Phaneritic Quartz-Feldspar intrusive rock)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Marble (Metamorphic Limestone (CaCO3)) — metamorphic

Marble

Metamorphic Limestone (CaCO3)

Sandstone (Clastic sedimentary rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite/Arkose)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Cobalt Glass Slug (Man-made Glass) (Amorphous Silica with Cobalt Oxide (SiO2 + CoO)) — mineraloid

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Coquina (Biogenic Limestone (CaCO3)) — sedimentary

Coquina

Biogenic Limestone (CaCO3)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Chert (often called Flint) (Chert (Microcrystalline or cryptocrystalline Silica, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Microcrystalline or cryptocrystalline Silica, SiO2)

Native Silver (Silver (elemental Ag)) — mineral

Native Silver

Silver (elemental Ag)

Banded Sandstone (Arenite with Liesegang banding) — sedimentary

Banded Sandstone

Arenite with Liesegang banding

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Granite (Granite (Silicic Intrusive Igneous Rock)) — Igneous

Granite

Granite (Silicic Intrusive Igneous Rock)

Granite (Granite (a phaneritic intrusive igneous rock)) — igneous

Granite

Granite (a phaneritic intrusive igneous rock)

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

Banded Chert (River Stone)

Silicon Dioxide (SiO2)

Granite Pebble (Felsic intrusive igneous rock) — igneous

Granite Pebble

Felsic intrusive igneous rock

Coquina / Fossiliferous Limestone (Calcareous bioclastic sedimentary rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)