Rock Identifier

Community gallery

All rocks & minerals

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

Epidote with quartz/feldspar (Epidote, Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote with quartz/feldspar

Epidote, Ca2(Al,Fe)3(SiO4)3(OH)

metamorphic
Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Sedimentary
Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Sedimentary
River Rock (likely Basalt or Greywacke) (Basalt or Lithic Sandstone) — Igneous or Sedimentary (water-worn)

River Rock (likely Basalt or Greywacke)

Basalt or Lithic Sandstone

Igneous or Sedimentary (water-worn)
Serpentinite (Serpentinite (group of minerals: Antigorite, Lizardite, Chrysotile)) — metamorphic

Serpentinite

Serpentinite (group of minerals: Antigorite, Lizardite, Chrysotile)

metamorphic
Porphyritic Rhyolite or Andesite (Porphyry) (Porphyritic igneous rock (Composition depends on exact mineralogy, often Rhyolite or Andesite)) — igneous

Porphyritic Rhyolite or Andesite (Porphyry)

Porphyritic igneous rock (Composition depends on exact mineralogy, often Rhyolite or Andesite)

igneous
Amygdaloidal Basalt (Amygdaloidal Basalt) — Igneous

Amygdaloidal Basalt

Amygdaloidal Basalt

Igneous
Quartzite (Quartzite (mostly SiO2)) — Metamorphic

Quartzite

Quartzite (mostly SiO2)

Metamorphic
Porphyritic Basalt or Andesite (Porphyritic Basalt/Andesite) — Igneous

Porphyritic Basalt or Andesite

Porphyritic Basalt/Andesite

Igneous
Conglomerate (Conglomerate) — Sedimentary

Conglomerate

Conglomerate

Sedimentary
Granite or Felsic Intrusive Rock (weathered) (Granite) — Igneous

Granite or Felsic Intrusive Rock (weathered)

Granite

Igneous
Quartz with Mica (SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)) — Mineral

Quartz with Mica

SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)

Mineral
Granite or Pegmatite in host rock (Granitoid / Felsic Intrusive Rock) — Igneous

Granite or Pegmatite in host rock

Granitoid / Felsic Intrusive Rock

Igneous
Schist with Quartz Veins (Schist with Quartz (SiO2)) — metamorphic

Schist with Quartz Veins

Schist with Quartz (SiO2)

metamorphic
Fossiliferous Shale or Slate with Plant Fossils (Fossil-bearing argillaceous rock) — Sedimentary/Metamorphic

Fossiliferous Shale or Slate with Plant Fossils

Fossil-bearing argillaceous rock

Sedimentary/Metamorphic
Limestone (Limestone (Calcium Carbonate, CaCO3)) — Sedimentary

Limestone

Limestone (Calcium Carbonate, CaCO3)

Sedimentary
Granite (Granite) — Igneous

Granite

Granite

Igneous
Granite (Granite) — Igneous

Granite

Granite

Igneous
Schist (Schist) — Metamorphic

Schist

Schist

Metamorphic
Schist (Schist) — Metamorphic

Schist

Schist

Metamorphic
Schist (Schist) — metamorphic

Schist

Schist

metamorphic
Granitic Pegmatite Intrusion in Host Rock (Pegmatite dike in amphibolite or schist) — igneous and metamorphic

Granitic Pegmatite Intrusion in Host Rock

Pegmatite dike in amphibolite or schist

igneous and metamorphic
Greenstone (Metabasalt (Greenstone facies)) — metamorphic

Greenstone

Metabasalt (Greenstone facies)

metamorphic
Granite (Phaneritic plutonic igneous rock (SiO2 range 65-75%)) — igneous

Granite

Phaneritic plutonic igneous rock (SiO2 range 65-75%)

igneous
Gneiss (likely Granitic Gneiss) (Gneiss) — metamorphic

Gneiss (likely Granitic Gneiss)

Gneiss

metamorphic
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Jasper Beads (Polished) (Silicon Dioxide (SiO2)) — sedimentary

Jasper Beads (Polished)

Silicon Dioxide (SiO2)

sedimentary
Black Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Black Jasper

Silicon Dioxide (SiO2) with impurities

sedimentary
Chert Pebble with Inclusion (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Inclusion

Microcrystalline Quartz (SiO2)

sedimentary
Carnelian (Red Agate) (Silicon dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (Red Agate)

Silicon dioxide (SiO2) with iron oxide impurities

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

Yellow Jasper

Silicon Dioxide (SiO2)

sedimentary
Quartzite pebble (Quartzite) — metamorphic

Quartzite pebble

Quartzite

metamorphic
Shungite (Non-crystalline carbon (Fullerene-bearing)) — mineral

Shungite

Non-crystalline carbon (Fullerene-bearing)

mineral
Granite Pebble (Granite (Felsic Plutonic Rock)) — igneous

Granite Pebble

Granite (Felsic Plutonic Rock)

igneous
River Pebble (Quartzite) (Quartzite (SiO2)) — metamorphic

River Pebble (Quartzite)

Quartzite (SiO2)

metamorphic
Chert (Flint Pebbles) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Pebbles)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Yellow Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Yellow Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Fossiliferous Limestone (Limestone with embedded fossil cross-section) — sedimentary

Fossiliferous Limestone

Limestone with embedded fossil cross-section

sedimentary
Quartz with inclusions (SiO2) — mineral

Quartz with inclusions

SiO2

mineral
Granite (Phaneritic intrusive igneous rock) — igneous

Granite

Phaneritic intrusive igneous rock

igneous
Yellow Jasper (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

sedimentary