Rock Identifier

Community gallery

All rocks & minerals

Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.

Unakite (Epidote in Feldspar/Quartz) (Unakite (composed of Epidote {Ca2(Al,Fe)3(SiO4)3(OH)}, Orthoclase {KAlSi3O8}, and Quartz {SiO2})) — metamorphic

Unakite (Epidote in Feldspar/Quartz)

Unakite (composed of Epidote {Ca2(Al,Fe)3(SiO4)3(OH)}, Orthoclase {KAlSi3O8}, and Quartz {SiO2})

metamorphic
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Dragons Blood Jasper (Cryptocrystalline Quartz (SiO2/Epidote/Piemontite)) — sedimentary

Dragons Blood Jasper

Cryptocrystalline Quartz (SiO2/Epidote/Piemontite)

sedimentary
Quartz (Rose/Pink variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose/Pink variety)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Concrete rubble (Anthropogenic conglomerate) — sedimentary

Concrete rubble

Anthropogenic conglomerate

sedimentary
River Stone (likely Quartzite or Sandstone) (Metamorphosed Quartz-rich Rock (SiO2)) — metamorphic

River Stone (likely Quartzite or Sandstone)

Metamorphosed Quartz-rich Rock (SiO2)

metamorphic
Agate Geode (Unopened) (Cryptocrystalline Quartz (SiO2) with Chalcedony) — mineral

Agate Geode (Unopened)

Cryptocrystalline Quartz (SiO2) with Chalcedony

mineral
Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

sedimentary
Geode Nodules / Agate Chert (Silicon Dioxide (SiO2)) — sedimentary

Geode Nodules / Agate Chert

Silicon Dioxide (SiO2)

sedimentary
Granite (Phaneritic Plutonic Rock (primarily SiO2, Al2O3, K2O, Na2O)) — igneous

Granite

Phaneritic Plutonic Rock (primarily SiO2, Al2O3, K2O, Na2O)

igneous
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

sedimentary
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

mineral
Garnet Schist (Almandine Garnet-bearing Mica Schist) — metamorphic

Garnet Schist

Almandine Garnet-bearing Mica Schist

metamorphic
Slag (Industrial By-product) (Glassy silicate or metallic smelting residue) — mineral-like (anthropogenic)

Slag (Industrial By-product)

Glassy silicate or metallic smelting residue

mineral-like (anthropogenic)
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Sandstone (Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

sedimentary
Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

sedimentary
Basalt River Pebble (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

igneous
Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Feldspar (Orthoclase) (Potassium Alveolar Silicate (KAlSi3O8)) — mineral

Feldspar (Orthoclase)

Potassium Alveolar Silicate (KAlSi3O8)

mineral
Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Pink Granite (Granitoid (rich in Potassium Feldspar)) — igneous

Pink Granite

Granitoid (rich in Potassium Feldspar)

igneous
Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

metamorphic
Chert (Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Quartz (SiO2)

sedimentary
Milky Quartz Pebble with Iron staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble with Iron staining

Silicon Dioxide (SiO2)

mineral
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet

Almandine (Fe3Al2(SiO4)3)

mineral
Gabbro (Phaneritic mafic intrusive igneous rock) — igneous

Gabbro

Phaneritic mafic intrusive igneous rock

igneous
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Basalt (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

igneous
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Gneissic Schist (Foliated Metamorphic Rock (Schist/Gneiss transition)) — metamorphic

Gneissic Schist

Foliated Metamorphic Rock (Schist/Gneiss transition)

metamorphic