Rock Identifier

Category

Mineral Like (Anthropogenic)

Browse mineral like (anthropogenic) specimens identified by the Rock Identifier community.

Learn about Mineral Like (Anthropogenic) in the encyclopedia

Calc-Silicate Rock

Calc-Silicate Rock

Garden Quartz

Ribbon Jasper

Sagenite Agate

Leopard Skin Jasper

Leopard Skin Jasper

Flower Jasper

Feather Jasper

Dendritic Opal

Starburst Agate

Plume Agate

Feather Agate

Moss Opal

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Ironstone Concretion (Siderite or Hematite Concretion (FeCO3 or Fe2O3)) — sedimentary

Ironstone Concretion

Siderite or Hematite Concretion (FeCO3 or Fe2O3)

Quartzite (Aventurine type) (Metamorphosed Quartz Sandstone (SiO2 with inclusions)) — metamorphic

Quartzite (Aventurine type)

Metamorphosed Quartz Sandstone (SiO2 with inclusions)

Ironstone Concretion (Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Shale with Iron Oxide Staining (Fissile Mudstone (primarily clay minerals and quartz)) — sedimentary

Shale with Iron Oxide Staining

Fissile Mudstone (primarily clay minerals and quartz)

Dalmatian Stone (Dalmatian Jasper) (Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite) — igneous

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite

Sandstone (with Iron Siderite Concretion) (Arenite with Ironstone Concretion (FeCO3)) — sedimentary

Sandstone (with Iron Siderite Concretion)

Arenite with Ironstone Concretion (FeCO3)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Tumbled Mixed Gemstones (Quartz and Rutile) (Silicon Dioxide (SiO2) with various inclusions) — mineral

Tumbled Mixed Gemstones (Quartz and Rutile)

Silicon Dioxide (SiO2) with various inclusions

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Basalt with Vesicular/Amygdaloidal Alteration (Extrusive Igneous Rock (Mafic)) — igneous

Basalt with Vesicular/Amygdaloidal Alteration

Extrusive Igneous Rock (Mafic)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Garnet Schist (Almandine Garnet in Mica Schist) — metamorphic

Garnet Schist

Almandine Garnet in Mica Schist

Sandstone with Foliose Lichen (Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)) — sedimentary

Sandstone with Foliose Lichen

Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)

Fossilized Bone (Permineralized Vertebrate Bone) — fossil

Fossilized Bone

Permineralized Vertebrate Bone

Greenstone / Greenschist (Metamorphosed mafic igneous rock (Greenschist facies)) — metamorphic

Greenstone / Greenschist

Metamorphosed mafic igneous rock (Greenschist facies)

Banded Iron Formation (BIF) (Banded Iron Formation) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation

Ferruginous Sandstone (River Pebble) (Clastic Sedimentary Rock (Iron-rich)) — sedimentary

Ferruginous Sandstone (River Pebble)

Clastic Sedimentary Rock (Iron-rich)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Garnet amphibolite / Metamorphic Rock (Garnet Amphibolite (Hornblende - Almandine schist/gneiss)) — metamorphic

Garnet amphibolite / Metamorphic Rock

Garnet Amphibolite (Hornblende - Almandine schist/gneiss)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Siltstone with Fossil Cast (Sedimentary Rock (Siltstone / Fine-grained Sandstone)) — sedimentary

Siltstone with Fossil Cast

Sedimentary Rock (Siltstone / Fine-grained Sandstone)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Asphalt Conglomerate (Artificial Bituminous Conglomerate) — sedimentary

Asphalt Conglomerate

Artificial Bituminous Conglomerate

Sandstone (Ferruginous) (Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)

Shale (Laminated Mudstone (Shale)) — sedimentary

Shale

Laminated Mudstone (Shale)

Chert (with Epidote/Quartz veining) (Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions) — sedimentary

Chert (with Epidote/Quartz veining)

Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions

Magnetite with Pyroxene (Magnetite (Fe3O4) in Mafic Igneous Matrix) — mineral/igneous

Magnetite with Pyroxene

Magnetite (Fe3O4) in Mafic Igneous Matrix

mineral/igneous

Limonite Geode / Ironstone Concretion with Quartz (Limonite with Quartz (FeO(OH)·nH2O + SiO2)) — sedimentary

Limonite Geode / Ironstone Concretion with Quartz

Limonite with Quartz (FeO(OH)·nH2O + SiO2)

Banded Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Cryptocrystalline Quartz (SiO2)

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Sandstone (Ferruginous) (Arenite (Fe2O3 enriched)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe2O3 enriched)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Chert (specifically Jasper/Carnelian Agate) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper/Carnelian Agate)

Microcrystalline Quartz (SiO2)

Quartz with Hematite Staining (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions) — mineral

Quartz with Hematite Staining

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions

Copper Nugget (Native Copper (Cu)) — mineral

Copper Nugget

Native Copper (Cu)

Quartz Geode (Silicon Dioxide (SiO2) in a concretion) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) in a concretion

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)