Rock Identifier

Category

Mineral, Often Found As A Rock

Browse mineral, often found as a rock specimens identified by the Rock Identifier community.

Learn about Mineral, Often Found As A Rock in the encyclopedia

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Halite

Dolomite

Gypsum

Coal

Limestone

Glauconite

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

Serpentine (Antigorite, Lizardite, or Chrysotile (Mg3Si2O5(OH)4)) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg3Si2O5(OH)4)

Chert (varieties: Flint, Jasper) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (varieties: Flint, Jasper)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

River Rock with Quartz Vein (Basalt or Andesite with Quartz Veining) — igneous

River Rock with Quartz Vein

Basalt or Andesite with Quartz Veining

Lapis Lazuli ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)) — metamorphic

Lapis Lazuli

(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)

Chrysocolla (Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Druzy Chalcedony/Quartz on Fluorite core (Silicon Dioxide (SiO2) on Calcium Fluoride (CaF2)) — mineral

Druzy Chalcedony/Quartz on Fluorite core

Silicon Dioxide (SiO2) on Calcium Fluoride (CaF2)

Concrete Fragment (Artificial Conglomerate (Cement and Aggregate)) — sedimentary

Concrete Fragment

Artificial Conglomerate (Cement and Aggregate)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Sandstone (Picture Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Picture Sandstone)

Arenite (primarily SiO2)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Granite (Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica) — igneous

Granite

Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica

Jasper / Chert / Quartzite (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper / Chert / Quartzite

Microcrystalline Quartz (SiO2)

Concretion (Sedimentary Concretion) — sedimentary

Concretion

Sedimentary Concretion

Chert (Flint Pebbles) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Pebbles)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Banded Gneiss Pebble (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Chert (often called Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (primarily SiO₂ / Silicon Dioxide)) — mineral

Petrified Wood

Silicified Wood (primarily SiO₂ / Silicon Dioxide)

Sedimentary Rock Fragments (Clastic Sedimentary Rock) — sedimentary

Sedimentary Rock Fragments

Clastic Sedimentary Rock

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

Chert (Nodule)

Silicon Dioxide (SiO2)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Sandstone or Quartzite pebble (Sandstone (Quartz arenite) or Quartzite) — sedimentary or metamorphic

Sandstone or Quartzite pebble

Sandstone (Quartz arenite) or Quartzite

sedimentary or metamorphic

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Magnetite / Iron-Rich Concretion (Magnetite (Fe3O4) or Bog Iron Limonite) — mineral

Magnetite / Iron-Rich Concretion

Magnetite (Fe3O4) or Bog Iron Limonite

Copper Ore (Malachite and Azurite stained rock) (Copper-bearing rock with secondary copper carbonates) — mineral

Copper Ore (Malachite and Azurite stained rock)

Copper-bearing rock with secondary copper carbonates

Banded Chert (Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Banded Chert (Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Sandstone (Arenite (SiO2 dominant)) — sedimentary

Sandstone

Arenite (SiO2 dominant)

Shale (Beach-worn) (Laminated Pelite (primarily clay minerals and quartz)) — sedimentary

Shale (Beach-worn)

Laminated Pelite (primarily clay minerals and quartz)

Spessartine Garnet in Quartz/Feldspar Pegmatite (Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar) — Mineral in Igneous Rock

Spessartine Garnet in Quartz/Feldspar Pegmatite

Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar

Mineral in Igneous Rock

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

Chert / Jasper

Silicon Dioxide (SiO2)

Amethyst (Quartz) (Amethyst (SiO2 with iron impurities)) — mineral

Amethyst (Quartz)

Amethyst (SiO2 with iron impurities)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Chert (Yellow variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Yellow variety)

Microcrystalline quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Jadeite (Nephrite) (Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Jadeite (Nephrite)

Ca2(Mg,Fe)5Si8O22(OH)2