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

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

Lepidolite

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

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

Lepidolite

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

Howlite (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Green Aventurine (SiO2 (Quartz with Fuchsite inclusions)) — mineral

Green Aventurine

SiO2 (Quartz with Fuchsite inclusions)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified wood (primarily quartz, SiO2)) — fossil

Petrified Wood

Silicified wood (primarily quartz, SiO2)

Quartz Vein with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Tumbled dark banded stone, possibly indigo gabbro or banded basalt (Indeterminate; likely fine-grained mafic rock composed mainly of plagioclase and pyroxene, with possible amphibole or alteration minerals) — igneous

Tumbled dark banded stone, possibly indigo gabbro or banded basalt

Indeterminate; likely fine-grained mafic rock composed mainly of plagioclase and pyroxene, with possible amphibole or alteration minerals

Quartz Druzy on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Gneiss with Quartz/Feldspar Vein (Felsic to intermediate gneiss) — metamorphic

Gneiss with Quartz/Feldspar Vein

Felsic to intermediate gneiss

Banded Gneiss (Gneiss (variable mineral composition)) — metamorphic

Banded Gneiss

Gneiss (variable mineral composition)

Native Copper Nugget (Native Copper (Cu)) — mineral

Native Copper Nugget

Native Copper (Cu)

Selenite (Satin Spar) (Gypsum (CaSO4·2H2O)) — mineral

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

Green Aventurine (Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

Chert (with potential fossil inclusion) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with potential fossil inclusion)

Microcrystalline Quartz (SiO2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

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

Quartz (Milky/Smoky Quartz)

Silicon Dioxide (SiO2)

Bauxite (Aluminium ore (Hydrated aluminium oxides AlOx(OH)3-2x)) — sedimentary

Bauxite

Aluminium ore (Hydrated aluminium oxides AlOx(OH)3-2x)

Schist (Crystalline Schist (often containing Muscovite, Biotte, or Quartz)) — metamorphic

Schist

Crystalline Schist (often containing Muscovite, Biotte, or Quartz)

Red Sandstone (Arenite (primarily SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Arenite (primarily SiO2 with Fe2O3)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss) (Gneiss (complex silicate composition)) — metamorphic

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

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

Sandstone

Arenite (composed primarily of SiO2)

Greenstone (Chlorite schist or metabasalt depending on specific composition) — Metamorphic

Greenstone

Chlorite schist or metabasalt depending on specific composition

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Snowflake Obsidian (Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)

Blue Quartz (Dumortierite Quartz) (Silicon dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)) — mineral

Blue Quartz (Dumortierite Quartz)

Silicon dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)

Basalt with Epidote (Mafic volcanic rock with Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — igneous

Basalt with Epidote

Mafic volcanic rock with Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

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

Garnet (specifically Almandine)

Almandine (Fe3Al2(SiO4)3)

Tourmalinated Quartz (Silicon Dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)) — mineral

Tourmalinated Quartz

Silicon Dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Olivine (Peridot when gem-quality) (Magnesium Iron Silicate, (Mg,Fe)2SiO4) — Mineral

Olivine (Peridot when gem-quality)

Magnesium Iron Silicate, (Mg,Fe)2SiO4

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz Geode (Unbroken) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Unbroken)

Silicon Dioxide (SiO2)

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Chakra Tumbled Stone Set (Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)) — Mineral

Chakra Tumbled Stone Set

Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)

Greenstone / Metabasalt (Chlorite schist or Epidiorite) — metamorphic

Greenstone / Metabasalt

Chlorite schist or Epidiorite