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

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Specular Hematite (Specularite (Iron Oxide, Fe2O3)) — mineral

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Fuchsite (Chrome Mica) (K(Al,Cr)2(AlSi3O10)(OH)2) — mineral

Fuchsite (Chrome Mica)

K(Al,Cr)2(AlSi3O10)(OH)2

Gneiss (Banded Metamorphic Rock (Gneiss)) — metamorphic

Gneiss

Banded Metamorphic Rock (Gneiss)

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — gemstone

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Corundum (Sapphire variant) (Aluminium oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Petrified Wood (Silicified wood (principally SiO2)) — fossil

Petrified Wood

Silicified wood (principally SiO2)

Jasper Pebble (SiO2 (Microcrystalline Quartz)) — sedimentary

Jasper Pebble

SiO2 (Microcrystalline Quartz)

Green Schist (Greenschist) (Greenschist facies metamorphic rock) — metamorphic

Green Schist (Greenschist)

Greenschist facies metamorphic rock

River Cobble (Quartzite or Gneiss) (Metamorphic crystalline rock (predominantly SiO2 based)) — metamorphic

River Cobble (Quartzite or Gneiss)

Metamorphic crystalline rock (predominantly SiO2 based)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (River-worn Pebble) (Phaneritic Igneous Rock (Granitic composition)) — igneous

Granite (River-worn Pebble)

Phaneritic Igneous Rock (Granitic composition)

Granite (Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)

Quartzite (Quartzite (High-purity SiO2)) — metamorphic

Quartzite

Quartzite (High-purity SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Greenschist (Greenschist (Chlorite-Epidote-Actinolite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Plume Agate (Silicon Dioxide (SiO2)) — mineral

Plume Agate

Silicon Dioxide (SiO2)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — metamorphic

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Crazy Lace Agate (Chalcedony (SiO2)) — mineral

Crazy Lace Agate

Chalcedony (SiO2)

Black Tourmaline (Schorl) (Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(BO3)3Si6O18(OH)4)

Sandstone (Banded) (Clastic Sedimentary Rock: Arenite) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

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

Chert Nodule (Flint)

Microcrystalline Quartz (SiO2)

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

Blue Lace Agate (Banded Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Cobblestones (Basalt/River Rock) (Polished lithic fragments and rounded pebbles) — sedimentary

Cobblestones (Basalt/River Rock)

Polished lithic fragments and rounded pebbles

Sandstone (with minor weathering/pitting) (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone (with minor weathering/pitting)

Clastic Sedimentary Rock (composed mostly of SiO2)

Serpentinite (Serpentinite (composed largely of serpentine minerals like antigorite, lizardite, or chrysotile)) — metamorphic

Serpentinite

Serpentinite (composed largely of serpentine minerals like antigorite, lizardite, or chrysotile)

Mica Schist (Metamorphic rock dominated by muscovite and/or biotite mica) — metamorphic

Mica Schist

Metamorphic rock dominated by muscovite and/or biotite mica

Vesicular Basalt (Scoria) (Basalt (Extrusive Igneous Rock)) — igneous

Vesicular Basalt (Scoria)

Basalt (Extrusive Igneous Rock)

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

Blue Apatite

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

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

Blue Apatite

Apatite (Ca5(PO4)3(F,Cl,OH))

Greenschist / Migmatite (Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)) — metamorphic

Greenschist / Migmatite

Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fossilized Brachiopod (Brachiopoda (Phylum)) — fossil

Fossilized Brachiopod

Brachiopoda (Phylum)

Shale fragment (Shale (clay mineral rich sedimentary rock)) — sedimentary

Shale fragment

Shale (clay mineral rich sedimentary rock)

Petrified Wood (Silicified wood / Permineralized wood (SiO2)) — fossil

Petrified Wood

Silicified wood / Permineralized wood (SiO2)

Kaolin (China Clay) (Kaolinite [Al2Si2O5(OH)4]) — sedimentary

Kaolin (China Clay)

Kaolinite [Al2Si2O5(OH)4]

Rose Quartz (Silicon Dioxide (SiO2)) — gemstone

Rose Quartz

Silicon Dioxide (SiO2)