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

Blue Topaz (Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2) — mineral

Blue Topaz

Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon dioxide with iron oxide inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon dioxide with iron oxide inclusions (SiO2 + Fe2O3)

Chert (Jasper) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Cryptocrystalline Quartz (SiO2)

Chert (Common Opal or Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal or Chalcedony)

Microcrystalline Quartz (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Olivine (Dunite) ((Mg,Fe)2SiO4 (Magnesium Iron Silicate)) — igneous

Olivine (Dunite)

(Mg,Fe)2SiO4 (Magnesium Iron Silicate)

Rose Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Rose Quartz

Quartz (Silicon Dioxide - SiO2)

Carnelian (SiO2 (Chalcedony with iron oxide impurities)) — mineral

Carnelian

SiO2 (Chalcedony with iron oxide impurities)

Pink Polished Marble (or Limestone) Pillar (Recrystallized Calcium Carbonate (CaCO3)) — metamorphic

Pink Polished Marble (or Limestone) Pillar

Recrystallized Calcium Carbonate (CaCO3)

Glauconite (Greensand) ((K, Na)(Fe3⁰, Al, Mg)₂(Si, Al)₄O₁₀(OH)₂) — sedimentary

Glauconite (Greensand)

(K, Na)(Fe3⁰, Al, Mg)₂(Si, Al)₄O₁₀(OH)₂

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

Chert (Flint Pepple)

Microcrystalline Quartz (SiO2)

Green Tourmaline (Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)) — mineral

Green Tourmaline

Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)

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

Chert (Flint)

Silicon dioxide (SiO2)

Aventurine (Aventurine Quartz (SiO2 + Fuschite inclusions)) — metamorphic

Aventurine

Aventurine Quartz (SiO2 + Fuschite inclusions)

Chert (Silica Pebble) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Silica Pebble)

Chert (Microcrystalline Quartz, SiO2)

Chert Nodule (Microcrystalline Silica (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Silica (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert Fossil (Pebble) (Microcrystalline Quartz (SiO2) with biogenic inclusions) — sedimentary

Chert Fossil (Pebble)

Microcrystalline Quartz (SiO2) with biogenic inclusions

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Common Quartz/Citrine-toned) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common Quartz/Citrine-toned)

Silicon Dioxide (SiO2)

Unakite (Epidote with Quartz and Feldspar) (Unakite (Metasomatized Granitic Rock)) — metamorphic

Unakite (Epidote with Quartz and Feldspar)

Unakite (Metasomatized Granitic Rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Fossilized Echinoid (Sea Urchin) (Echinoidea (Class), often found as calcitic fossils) — sedimentary

Fossilized Echinoid (Sea Urchin)

Echinoidea (Class), often found as calcitic fossils

Covellite (Covellite (CuS)) — mineral

Covellite

Covellite (CuS)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite) (Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)) — mineral

Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)

Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

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

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Grey Agate (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Grey Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Limonite (Hydrous Iron Oxide (often Goethite FeO(OH), Lepidocrocite γ-FeO(OH), and other amorphous iron oxyhydroxides)) — Mineral

Limonite

Hydrous Iron Oxide (often Goethite FeO(OH), Lepidocrocite γ-FeO(OH), and other amorphous iron oxyhydroxides)

Chert (Quartz var.) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartz var.)

Silicon Dioxide (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Greenstone / Glauconitic Siltstone (Metabasalt or Glauconite-rich Sedimentary Rock) — metamorphic or sedimentary

Greenstone / Glauconitic Siltstone

Metabasalt or Glauconite-rich Sedimentary Rock

metamorphic or sedimentary

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Unakite (Altered Granite (Orthoclase Feldspar, Epidote, and Quartz)) — metamorphic

Unakite

Altered Granite (Orthoclase Feldspar, Epidote, and Quartz)