Rock Identifier

Category

Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.

Learn about Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration) in the encyclopedia

Sard

Anthracite

Soapstone

Troctolite

Verdite

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Dalmatian Jasper

Dalmatian Jasper

Jet

Lapis Lazuli

Apophyllite

Hornblende Schist

Hornblende Schist

Epidote (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Tumbled quartz-rich stone, possibly blue quartz or granite (Quartz (SiO₂), with probable feldspar and dark accessory minerals) — mineral

Tumbled quartz-rich stone, possibly blue quartz or granite

Quartz (SiO₂), with probable feldspar and dark accessory minerals

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Tumbled milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Weathered basalt or fine-grained mafic rock (Basalt, likely altered/vesicle-poor tholeiitic basalt; exact identification requires testing) — igneous

Weathered basalt or fine-grained mafic rock

Basalt, likely altered/vesicle-poor tholeiitic basalt; exact identification requires testing

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Pyrite (Iron Pyrite (FeS2)) — Mineral

Pyrite

Iron Pyrite (FeS2)

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

Biotite Mica

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

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

Mica (Muscovite) in Granite

Muscovite (KAl2(AlSi3O10)(OH)2)

Biotite on Quartz Matrix (Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)) — mineral

Biotite on Quartz Matrix

Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Chert (Arrowhead/Tool variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead/Tool variety)

Microcrystalline Quartz (SiO2)

Mixed mineral and rock collection, including likely amethyst and assorted tumbled stones (Unidentified mixed specimens; visible purple quartz is likely amethyst (SiO₂)) — mineral

Mixed mineral and rock collection, including likely amethyst and assorted tumbled stones

Unidentified mixed specimens; visible purple quartz is likely amethyst (SiO₂)

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

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

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

Green Aventurine

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

Greenstone (Greenschist) (Greenschist facies rock (containing chlorite, epidote, actinolite)) — metamorphic

Greenstone (Greenschist)

Greenschist facies rock (containing chlorite, epidote, actinolite)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Faceted clear gemstone, likely glass or cubic zirconia (Undetermined; could be synthetic cubic zirconia (ZrO₂) or cut glass (silica-based)) — gemstone

Faceted clear gemstone, likely glass or cubic zirconia

Undetermined; could be synthetic cubic zirconia (ZrO₂) or cut glass (silica-based)

Biotite Mica (K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2) — Mineral

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Likely limestone or marble fragment (Calcite-rich carbonate rock; possibly marble (CaCO₃)) — metamorphic

Likely limestone or marble fragment

Calcite-rich carbonate rock; possibly marble (CaCO₃)

Likely biotite-rich metamorphic rock (mica schist or amphibolite) (Mica schist/amphibolite; chiefly biotite mica ± hornblende, plagioclase, quartz) — metamorphic

Likely biotite-rich metamorphic rock (mica schist or amphibolite)

Mica schist/amphibolite; chiefly biotite mica ± hornblende, plagioclase, quartz

Vesicular Basalt (Lava Rock) (Basalt) — igneous

Vesicular Basalt (Lava Rock)

Basalt

Granite (Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)

Granite fragment (Granite) — igneous

Granite fragment

Granite

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

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz or Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz or Citrine Quartz

Silicon Dioxide (SiO2)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Diorite (Intermediate Phaneritic Igneous Rock) — igneous

Diorite

Intermediate Phaneritic Igneous Rock

Granodiorite River Pebble (Granodiorite) — igneous

Granodiorite River Pebble

Granodiorite

Milky quartz fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Basalt with Phenocrysts (Extrusive Igneous Rock) — igneous

Basalt with Phenocrysts

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt Pebble (Extrusive igneous rock) — igneous

Basalt Pebble

Extrusive igneous rock

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Mica-bearing metamorphic rock, likely schist (Muscovite/biotite mica schist with quartz and feldspar) — metamorphic

Mica-bearing metamorphic rock, likely schist

Muscovite/biotite mica schist with quartz and feldspar

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

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2