Rock Identifier

Community gallery

All rocks & minerals

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

Fossiliferous Limestone (Biogenic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

sedimentary
Smoky Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Crystalline Silicon Dioxide (SiO2)

mineral
Mookaite Jasper (Radiolarite (Silica with iron oxides like Goethite and Hematite)) — sedimentary

Mookaite Jasper

Radiolarite (Silica with iron oxides like Goethite and Hematite)

sedimentary
Basalt Pebble (Extrusive mafic volcanic rock) — igneous

Basalt Pebble

Extrusive mafic volcanic rock

igneous
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

sedimentary
Basalt (Beach Pebble) (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt (Beach Pebble)

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Calligraphy Stone (Fossiliferous Limestone (containing Hematite and Shells)) — sedimentary

Calligraphy Stone

Fossiliferous Limestone (containing Hematite and Shells)

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Quartzwacke / Impure Sandstone (Arenite with minor lithic fragments (Silicon Dioxide matrix)) — sedimentary

Quartzwacke / Impure Sandstone

Arenite with minor lithic fragments (Silicon Dioxide matrix)

sedimentary
Yellow Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Pumice (Pumice (SiO2 + Al2O3 + Fe2O3)) — igneous

Pumice

Pumice (SiO2 + Al2O3 + Fe2O3)

igneous
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Quartz (Agate or Chert pebble) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Agate or Chert pebble)

Silicon Dioxide (SiO2)

sedimentary
Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Decorative Gravel) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Decorative Gravel)

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Carbonate rock (CaCO3)) — sedimentary

Limestone

Carbonate rock (CaCO3)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Pumice (Pumice (volcanic glass with vesicular texture)) — igneous

Pumice

Pumice (volcanic glass with vesicular texture)

igneous
Aggregate Concrete (Anthropogenic Conglomerate (Technosol)) — sedimentary

Aggregate Concrete

Anthropogenic Conglomerate (Technosol)

sedimentary
Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

mineral
Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

mineral
Yellow Jasper (Silicon dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon dioxide (SiO2)

sedimentary
Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Yellow Chert (Chert / Cryptocrystalline Quartz) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Chert (Chert / Cryptocrystalline Quartz)

Silicon Dioxide (SiO2)

sedimentary
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Ferruginous Sandstone (ironstone) (Sandstone with iron oxide cement (limonite/hematite)) — sedimentary

Ferruginous Sandstone (ironstone)

Sandstone with iron oxide cement (limonite/hematite)

sedimentary
Diorite (Intermediate Phaneritic Igneous Rock) — igneous

Diorite

Intermediate Phaneritic Igneous Rock

igneous
Granite (Granite) — igneous

Granite

Granite

igneous
Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

sedimentary
Nephrite Jade (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

metamorphic
Granite (Phaneritic intrusive igneous rock (Granite)) — igneous

Granite

Phaneritic intrusive igneous rock (Granite)

igneous
Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

sedimentary
Sandstone (Quartz-rich) (Arenite) — sedimentary

Sandstone (Quartz-rich)

Arenite

sedimentary
Basalt (River Stone) (Extrusive mafic igneous rock) — igneous

Basalt (River Stone)

Extrusive mafic igneous rock

igneous
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

sedimentary
Banded Iron Formation (BIF) / Ironstone Conglomerate (Ironstone (Hematite/Goethite rich sedimentary rock)) — sedimentary

Banded Iron Formation (BIF) / Ironstone Conglomerate

Ironstone (Hematite/Goethite rich sedimentary rock)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

sedimentary