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

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Calc-Silicate Rock

Calc-Silicate Rock

Garden Quartz

Garden Quartz

Ribbon Jasper

Sagenite Agate

Sagenite Agate

Leopard Skin Jasper

Leopard Skin Jasper

Flower Jasper

Flower Jasper

Feather Jasper

Dendritic Opal

Dendritic Opal

Starburst Agate

Plume Agate

Plume Agate

Feather Agate

Feather Agate

Moss Opal

Moss Opal

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Prehnite (Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2

mineral
Sandstone (likely Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

sedimentary
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

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

mineral
Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary
Quartz with inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with inclusions

Silicon Dioxide (SiO2)

mineral
Sandstone or Limestone (Arenite or Calcareous Sedimentary Rock) — Sedimentary

Sandstone or Limestone

Arenite or Calcareous Sedimentary Rock

Sedimentary
Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

mineral
Hypersthene (Hypersthene (formula: (Mg,Fe)SiO3)) — mineral

Hypersthene

Hypersthene (formula: (Mg,Fe)SiO3)

mineral
Sandstone (likely Quartz Sandstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (likely Quartz Sandstone)

Arenite (composed primarily of SiO2)

sedimentary
Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral
Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

mineral
Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

fossil
Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

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

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

mineral
Quartz (specifically Milky or Clear Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky or Clear Quartz)

Silicon Dioxide (SiO2)

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

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

mineral
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

sedimentary
Travertine (Tufa) (Calcium Carbonate (CaCO3)) — sedimentary

Travertine (Tufa)

Calcium Carbonate (CaCO3)

sedimentary
Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Quartz Pebbles

Silicon Dioxide (SiO2)

mineral
Microcline (Potassium Feldspar) (Microcline (KAlSi3O8)) — mineral

Microcline (Potassium Feldspar)

Microcline (KAlSi3O8)

mineral
Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

mineral
Muscovite Mica (Golden/Yellow variety) (KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica (Golden/Yellow variety)

KAl2(AlSi3O10)(F,OH)2

mineral
Howlite (Ca2B5SiO9(OH)5 (Calcium borosilicate hydroxide)) — mineral

Howlite

Ca2B5SiO9(OH)5 (Calcium borosilicate hydroxide)

mineral
Howlite (Howlite (Ca2B5SiO9(OH)5)) — mineral

Howlite

Howlite (Ca2B5SiO9(OH)5)

mineral
Fluorite (Fluor-spar) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Fluor-spar)

Calcium Fluoride (CaF2)

mineral
Larimar (Blue Pectolite (NaCa2Si3O8(OH))) — mineral

Larimar

Blue Pectolite (NaCa2Si3O8(OH))

mineral
Calcite on Limestone (Calcium Carbonate (CaCO3)) — mineral

Calcite on Limestone

Calcium Carbonate (CaCO3)

mineral
Ferruginous Sandstone (Gozzanous) (SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating) — sedimentary

Ferruginous Sandstone (Gozzanous)

SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating

sedimentary
Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

mineral
Sandstone River Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone River Pebble

Arenite (SiO2 based)

sedimentary
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Granite (Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

igneous
Fluorite (Purple variety) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Purple variety)

Calcium Fluoride (CaF2)

mineral
Sandstone with Iron Oxide Concretion (Arenite with Hematite/Goethite Concretion) — sedimentary

Sandstone with Iron Oxide Concretion

Arenite with Hematite/Goethite Concretion

sedimentary
Howlite (Howlite (Ca2B5SiO9(OH)5)) — mineral

Howlite

Howlite (Ca2B5SiO9(OH)5)

mineral
Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral