Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Blue Quartz (potentially Dumortierite-included) (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz (potentially Dumortierite-included)

Silicon Dioxide (SiO2) with inclusions

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

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

Blue Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Peacock Ore (Bornite/Chalcopyrite) (Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite/Chalcopyrite)

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Schist (Mica Schist (Composition typically involves Muscovite, Biotite, Quartz, and Feldspar)) — metamorphic

Schist

Mica Schist (Composition typically involves Muscovite, Biotite, Quartz, and Feldspar)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Pegmatite (White Granite variant) (Pegmatitic Granite (Quartz and Feldspar rich)) — igneous

Pegmatite (White Granite variant)

Pegmatitic Granite (Quartz and Feldspar rich)

River Cobble (Phyllite or Quartzite) (Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)) — metamorphic

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Granite (Phaneritic Granitoid (Primary minerals: Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Mica)) — igneous

Granite

Phaneritic Granitoid (Primary minerals: Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Mica)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Vesicular Basalt (Vesicular Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Vesicular Basalt

Vesicular Basalt (Aphanitic Mafic Igneous Rock)

Granite (Granite (a phaneritic intrusive igneous rock)) — igneous

Granite

Granite (a phaneritic intrusive igneous rock)

Gastropod Fossil (Snail Internal Mold) (Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)) — sedimentary

Gastropod Fossil (Snail Internal Mold)

Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt (River Cobble) (Mafic Igneous Basalt (composed primarily of Plagioclase feldspar, Pyroxene, and Olivine)) — Igneous

Basalt (River Cobble)

Mafic Igneous Basalt (composed primarily of Plagioclase feldspar, Pyroxene, and Olivine)

Granite (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Granite)

Unidentifiable Specimen (Undetermined) — Unknown

Unidentifiable Specimen

Undetermined

Blue Aventurine (Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)) — metamorphic

Blue Aventurine

Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)

Botryoidal Quartz / Calcite Geode crust (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — mineral

Botryoidal Quartz / Calcite Geode crust

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Granite (Orthoclase rich) (Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)) — igneous

Granite (Orthoclase rich)

Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Rutilated Quartz (Quartz with Rutile inclusions (SiO2 with TiO2 inclusions)) — mineral

Rutilated Quartz

Quartz with Rutile inclusions (SiO2 with TiO2 inclusions)

Milky Quartz (Quartz (SiO2)) — Mineral

Milky Quartz

Quartz (SiO2)

Granite (Granite (a common rock type, not a single mineral species)) — Igneous

Granite

Granite (a common rock type, not a single mineral species)

Gneiss (High-grade foliated metamorphic rock) — metamorphic

Gneiss

High-grade foliated metamorphic rock

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Agate (Agate (Silicon Dioxide, SiO2)) — mineral

Agate

Agate (Silicon Dioxide, SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Silver (S925) (Native Silver (Ag)) — mineral

Silver (S925)

Native Silver (Ag)

Mica Schist (Mica Schist (primarily Muscovite and Biotite micas)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite micas)