Rock Identifier

Community gallery

All rocks & minerals

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

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Moss Agate (Silicon Dioxide with inclusions (SiO2 + Fe/Mg/Mn/Chlorite)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Fe/Mg/Mn/Chlorite)

mineral
Septarian (Dragon Stone) (Septarian Concretion (SiO2 + CaCO3)) — sedimentary

Septarian (Dragon Stone)

Septarian Concretion (SiO2 + CaCO3)

sedimentary
Dragon Blood Jasper (Epidote with Red Jasper (Quartz-rich aggregate)) — sedimentary

Dragon Blood Jasper

Epidote with Red Jasper (Quartz-rich aggregate)

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

Pink Polished Marble (or Limestone) Pillar

Recrystallized Calcium Carbonate (CaCO3)

metamorphic
Amethyst Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

mineral
Orca Agate (Chalcedony (Microcrystalline Quartz, SiO2)) — sedimentary

Orca Agate

Chalcedony (Microcrystalline Quartz, SiO2)

sedimentary
Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

mineral
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary
Basalt (with possible alteration or lichen) (Mafic volcanic rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible alteration or lichen)

Mafic volcanic rock (primarily Plagioclase and Pyroxene)

igneous
Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Shale or Mudstone (Argillaceous sedimentary rock) — sedimentary

Shale or Mudstone

Argillaceous sedimentary rock

sedimentary
Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

igneous
Granite (Granite (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)

igneous
Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

igneous
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Gabbro (Gabbro (Mg, Fe)2Si2O6 / CaAl2Si2O8) — igneous

Gabbro

Gabbro (Mg, Fe)2Si2O6 / CaAl2Si2O8

igneous
Sandstone (Graywacke) (Arenite / Graywacke (SiO2 with lithic fragments)) — sedimentary

Sandstone (Graywacke)

Arenite / Graywacke (SiO2 with lithic fragments)

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

sedimentary
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Amber (Succinite (C10H16O)) — mineral

Amber

Succinite (C10H16O)

mineral
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Granite

Granite (Phaneritic Igneous Rock)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

metamorphic
Chert (and Flint) (Silicon Dioxide (Microcrystalline Quartz), SiO2) — sedimentary

Chert (and Flint)

Silicon Dioxide (Microcrystalline Quartz), SiO2

sedimentary
Granite (Granite) — igneous

Granite

Granite

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

Milky Quartz on Matrix

Quartz (Silicon Dioxide, SiO2)

mineral
Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

mineral
Fossil Coral (Rugose Coral) (Rugosa (extinct order of solitary and colonial corals)) — sedimentary

Fossil Coral (Rugose Coral)

Rugosa (extinct order of solitary and colonial corals)

sedimentary
Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary
Chert (containing Fossil Mold) (Silicon dioxide (SiO2)) — sedimentary

Chert (containing Fossil Mold)

Silicon dioxide (SiO2)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Red Quartz (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Quartz

Silicon Dioxide (SiO2) with Hematite inclusions

mineral
Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

mineral
Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

sedimentary
Pumice (Pumice (Volcanic Glass)) — igneous

Pumice

Pumice (Volcanic Glass)

igneous
Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral