Rock Identifier

Category

Igneous Or Sedimentary

Browse igneous or sedimentary specimens identified by the Rock Identifier community.

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

mineral
Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

mineral
Gabbro (Plutonic mafic rock) — igneous

Gabbro

Plutonic mafic rock

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Orange Calcite (Calcite (Calcium Carbonate, CaCO3)) — Mineral

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Mineral
Quartz (Crystal/Druzy Quartz) (Quartz (SiO₂)) — Mineral

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Mineral
Quartz (likely) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely)

Quartz (SiO2 - Silicon Dioxide)

Mineral
Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

sedimentary
Granite (Granite) — igneous

Granite

Granite

igneous
Dalmatian Jasper (Peralkaline rhyolite with Arfvedsonite inclusions) — igneous

Dalmatian Jasper

Peralkaline rhyolite with Arfvedsonite inclusions

igneous
Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

igneous
Pink Granite (Phaneritic Plutonic Igneous Rock (high K-feldspar)) — igneous

Pink Granite

Phaneritic Plutonic Igneous Rock (high K-feldspar)

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

Granite

Phaneritic Felsic Igneous Rock (Granite)

igneous
Shale with Siltstone layering (Sedimentary Clastic Rock (Mudstone/Shale)) — sedimentary

Shale with Siltstone layering

Sedimentary Clastic Rock (Mudstone/Shale)

sedimentary
Sandstone (Quartz Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

sedimentary
Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — Mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Mineral
Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

mineral
Limonite with Trace Fossils (Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)) — sedimentary

Limonite with Trace Fossils

Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)

sedimentary
Chert (Jasper/Opaline variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Opaline variety)

Silicon Dioxide (SiO2)

sedimentary
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Granite (Granite (a common igneous rock)) — igneous

Granite

Granite (a common igneous rock)

igneous
Moqui Marble (Concretion) (Iron Oxide Concretion (Hematite-cemented Sandstone)) — sedimentary

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite-cemented Sandstone)

sedimentary
Sedimentary Breccia (Breccia (Clastic Sedimentary Rock)) — sedimentary

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

sedimentary
Sedimentary Breccia (Clastic Breccia (CaCO3/SiO2 matrix)) — sedimentary

Sedimentary Breccia

Clastic Breccia (CaCO3/SiO2 matrix)

sedimentary
Quartz Geode (with Agate banding) (Silicon Dioxide (SiO2)) — Sedimentary or Igneous (secondary formation)

Quartz Geode (with Agate banding)

Silicon Dioxide (SiO2)

Sedimentary or Igneous (secondary formation)
Granite (Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

igneous
Banded Agate (variety of Chalcedony) (Agate (SiO2)) — mineral

Banded Agate (variety of Chalcedony)

Agate (SiO2)

mineral
Pink Granite (River Pebble) (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite (River Pebble)

Phaneritic Felsic Igneous Rock

igneous
Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Mineral
Chert (specifically Gray/Blue-Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray/Blue-Gray Chert)

Chert (SiO2)

sedimentary
Sodalite (Sodalite (Na4Al3Si3O12Cl)) — Mineral

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Mineral
Pink Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

igneous
Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

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

Granite

Phaneritic Felsic Igneous Rock (Granite)

igneous
Muscovite Mica (KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

mineral
Devil's Toenail (Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)) — sedimentary

Devil's Toenail

Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Massive Quartz with Host Rock (Silicon Dioxide (SiO2)) — mineral

Massive Quartz with Host Rock

Silicon Dioxide (SiO2)

mineral
Sandstone (Micaceous) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

sedimentary
Sandstone (Water-worn Pebble) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary