Rock Identifier

Category

Mineral_rock

Browse mineral_rock specimens identified by the Rock Identifier community.

Learn about Mineral_rock in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Dolomite

Gypsum

Coal

Claystone

Carbonatite

Serpentinite

Skarn

Schist

Shale

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Desert Rose (Gypsum (CaSO4·2H2O) or Barite (BaSO4)) — mineral

Desert Rose

Gypsum (CaSO4·2H2O) or Barite (BaSO4)

Orthoclase Feldspar (KAlSi3O8 (Potassium aluminum silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Likely serpentine (serpentinite) pebbles (Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals) — metamorphic

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Granodiorite (or Granite) Pebble (Phaneritic Felsic Igneous Pebble) — igneous

Granodiorite (or Granite) Pebble

Phaneritic Felsic Igneous Pebble

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Cherry Quartz with Rose Quartz (Crystalline Quartz (SiO2) with glass-based synthetic components) — gemstone

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Fluorite and Mineral Collection (Calcium Fluoride (CaF2)) — mineral

Fluorite and Mineral Collection

Calcium Fluoride (CaF2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

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

Gneiss

Gneiss (High-grade metamorphic rock)

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

Sandstone (River Rock)

Arenite (composed primarily of SiO2)

Conglomerate (or Breccia / Porphyry) (Clastic Sedimentary Rock (Conglomerate / Sandstone)) — sedimentary

Conglomerate (or Breccia / Porphyry)

Clastic Sedimentary Rock (Conglomerate / Sandstone)

Amazonite (Microcline feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline feldspar (KAlSi3O8)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Polished brecciated jasper (Jasper, opaque microcrystalline quartz (SiO₂), likely brecciated jasper with iron-oxide and dark silicate inclusions) — mineral

Polished brecciated jasper

Jasper, opaque microcrystalline quartz (SiO₂), likely brecciated jasper with iron-oxide and dark silicate inclusions

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Unidentified gray rock/mineral specimen (Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen) — mineral

Unidentified gray rock/mineral specimen

Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen

Turquoise (Turquoise - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Generic Rock Fragment (Rock Fragment) — sedimentary

Generic Rock Fragment

Rock Fragment

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Vein in Basalt or Mafic Rock (Silicon Dioxide (SiO2) vein in volcanic/mafic matrix) — igneous

Quartz Vein in Basalt or Mafic Rock

Silicon Dioxide (SiO2) vein in volcanic/mafic matrix

Granite (Granite) — Igneous

Granite

Granite

Mixed Rock Collection (Pebbles and Stones) (Various geological specimens) — igneous, sedimentary, and metamorphic

Mixed Rock Collection (Pebbles and Stones)

Various geological specimens

igneous, sedimentary, and metamorphic

Fossil Shell (Invertebrate fossil (Mollusca)) — fossil

Fossil Shell

Invertebrate fossil (Mollusca)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Quartz Vein in Schist (Quartz (SiO2) in Mica Schist) — metamorphic

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granite (Intrusive Igneous Rock (Felsic)) — igneous

Granite

Intrusive Igneous Rock (Felsic)

Diorite or Granodiorite Pebble (Intermediate Phaneritic Igneous Rock) — igneous

Diorite or Granodiorite Pebble

Intermediate Phaneritic Igneous Rock

Gneissic Schist (Gneiss-schist (Metamorphic rock)) — metamorphic

Gneissic Schist

Gneiss-schist (Metamorphic rock)

Quartz Geode in Sedimentary Host Rock (Silicon Dioxide (SiO2) in Carbonate Matrix) — sedimentary

Quartz Geode in Sedimentary Host Rock

Silicon Dioxide (SiO2) in Carbonate Matrix

Limonite/Goethite Concretion (Goethite (FeO(OH))) — sedimentary

Limonite/Goethite Concretion

Goethite (FeO(OH))

Ferruginous Sandstone (Ferruginous Quartz-Arenite) — sedimentary

Ferruginous Sandstone

Ferruginous Quartz-Arenite

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

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (with Iron Staining) (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (with Iron Staining)

Crystalline Silicon Dioxide (SiO2)