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

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Pegmatite (Igneous Pegmatite) — igneous

Pegmatite

Igneous Pegmatite

Quartz Geode (Silicon Dioxide (SiO2)) — Mineral / Sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Mineral / Sedimentary

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Granite Pegmatite (Pegmatite (Quartz, Feldspar, Mica)) — igneous

Granite Pegmatite

Pegmatite (Quartz, Feldspar, Mica)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Greenstone (Greenschist / Greenstone (Chlorite-Epidote facies)) — metamorphic

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Banded) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (Banded)

Cryptocrystalline Silica (SiO2)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Ferruginous Concretion) (Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement) — sedimentary

Sandstone (Ferruginous Concretion)

Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement

Sandstone (Arenite (primary component SiO2)) — sedimentary

Sandstone

Arenite (primary component SiO2)

Limonite (Iron Ore) (FeO(OH)·nH2O) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O

Banded Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic rock)

Petrified Wood (Silicified wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily SiO2)

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Sandstone (Quartz-rich) (Arenite) — sedimentary

Sandstone (Quartz-rich)

Arenite

Petrified Coral Fossil (Honeycomb Coral) (Favosites (Rugosa/Tabulate coral fossil replaced by microcrystalline quartz/chalcedony)) — fossil

Petrified Coral Fossil (Honeycomb Coral)

Favosites (Rugosa/Tabulate coral fossil replaced by microcrystalline quartz/chalcedony)

Chert (Green and Black Jasper variant) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Green and Black Jasper variant)

Cryptocrystalline Quartz (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Blue Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — mineral

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Copper Ore Specimen (Cupriferous Rock / Malachite-bearing ore) — mineral

Copper Ore Specimen

Cupriferous Rock / Malachite-bearing ore

Spherulitic Agate / Moss Agate (Chalcedony (SiO2) with mineral inclusions) — mineral

Spherulitic Agate / Moss Agate

Chalcedony (SiO2) with mineral inclusions

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Sandstone with Iron Staining (Arenite (SiO2 with FeO(OH) impurities)) — sedimentary

Sandstone with Iron Staining

Arenite (SiO2 with FeO(OH) impurities)

Red Sandstone (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 with Fe2O3)

Green Druzy Quartz (Prasiolite) (Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)) — mineral

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Gneiss with Quartz Veining (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade metamorphic rock)

Granitoid (Pegmatitic Granite) (Granitoid with dominant Potassium Feldspar and Quartz) — igneous

Granitoid (Pegmatitic Granite)

Granitoid with dominant Potassium Feldspar and Quartz

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Polished agate/jasper pebble (Microcrystalline quartz (chalcedony), SiO₂, with likely iron-oxide and clay inclusions) — mineral

Polished agate/jasper pebble

Microcrystalline quartz (chalcedony), SiO₂, with likely iron-oxide and clay inclusions

Quartz (Iron-Stained) (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Crystalline Silicon Dioxide (SiO2)

Muscovite (Muscovite, KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

Muscovite, KAl2(AlSi3O10)(OH)2

Sulfur on Aragonite (Sulfur (S) on Aragonite (CaCO3)) — mineral

Sulfur on Aragonite

Sulfur (S) on Aragonite (CaCO3)

Goethite/Limonite Iron Ore Node (Goethite (FeO(OH)) or Limonite (mixture of hydrated iron oxides)) — mineral

Goethite/Limonite Iron Ore Node

Goethite (FeO(OH)) or Limonite (mixture of hydrated iron oxides)

Biotite or Phlogopite Mica (K(Mg,Fe)3(AlSi3O10)(F,OH)2) — mineral

Biotite or Phlogopite Mica

K(Mg,Fe)3(AlSi3O10)(F,OH)2

Rutilated Quartz (with Garnet pendant) (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz (with Garnet pendant)

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

Aventurine Quartz (Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Aventurine Quartz

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Amygdaloidal Basalt (Basalt with secondary amygdule minerals (likely Epidote or Chlorite)) — igneous

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)